SUNTES NCLU-136, NCLU-156, NCLU-186, NCLU-218, NCLU-248 and NCLU-308 Clutches

SUNTES NCLU-136, NCLU-156, NCLU-186, NCLU-218, NCLU-248 and NCLU-308 Clutches

SUNTES NCLU-Series lock-type centrifugal clutches integrate a centrifugal clutch with a gear clutch in a compound assembly. The listed range comprises NCLU-136, NCLU-156, NCLU-186, NCLU-218, NCLU-248 and NCLU-308. The range combines speed-dependent frictional engagement with the functions of a gear-clutch arrangement for engine-driven power transmission systems.

Compound clutch concept

The centrifugal clutch and gear clutch serve complementary roles within the assembly. Centrifugal engagement supports gradual pickup of the driven load as the driving machine accelerates, while the gear-clutch section is part of the mechanical connection arrangement. The overall operating behaviour depends on the complete machine layout and control sequence. Specify the intended duty and connection requirements before selecting the model, rather than choosing only by the space available in the machine.

System functions and application review

The lock-type clutch concept supports engine-only operation, prevention of reverse rotation of the driving machine, automatic engine/motor changeover, cushioned starting and flexible coupling functions. These are possible system applications; they should be matched to the actual installation and required operating mode. For an engine/motor arrangement, define how the driving sources are to be connected and changed over, and have the complete operating sequence reviewed with the selected clutch configuration.

Six sizes with distinct installation envelopes

The dimension table provides A, B, C, D, E, F, H, J, P, R, S and diameter U for all six models, together with mass. Dimension A ranges from 960 mm on NCLU-136 to 1,520 mm on NCLU-308, while dimension E ranges from 1,160 mm to 1,880 mm. The listed diameter U values are 70, 85, 95, 95, 125 and 140 mm respectively. These values must be checked against the actual dimensional drawing; the letter designations are drawing references and should not be reassigned to an assumed component feature.

Mass and drawing notation

The published masses are 350 kg for NCLU-136, 430 kg for NCLU-156, 800 kg for NCLU-186, 850 kg for NCLU-218, 1,150 kg for NCLU-248 and 2,100 kg for NCLU-308. Account for the selected assembly when planning support, handling and maintenance access. Entries in column B, such as 430-2 and 485-2, are retained as drawing notation. They are not subtraction expressions and should be interpreted using the corresponding dimensional drawing.

Selection and ordering information

State the full NCLU model, driving-machine type, power and operating speed, driven-machine duty, load inertia, start frequency, shaft interfaces and mounting arrangement. Include the required control sequence and any engine/motor changeover function. The dimensional table does not specify a torque rating, engagement speed or permissible maximum speed. Confirm those performance requirements, the approved operating procedure and the latest assembly drawing before final selection or machining mating components.

NCLU-Series dimensional drawing

Models, dimensions and technical data

Dimensions are in millimetres unless otherwise specified. Lettered dimensions refer to the corresponding drawings; diameter symbols and drawing references are retained.

NCLU dimensions and mass

Model	A	B	C	D	E	F	H	J	P	R	S	φU	Mass (kg)
NCLU-136	960	430-2	90	720	1,160	550	215.5	530	300	550	600	70	350
NCLU-156	1,100	485-2	100	815	1,320	550	220.5	580	320	550	600	85	430
NCLU-186	1,200	525-2	100	915	1,420	800	232.0	620	320	600	650	95	800
NCLU-218	1,210	530-2	120	920	1,470	800	232.0	700	350	600	680	95	850
NCLU-248	1,340	390-2	160	1,010	1,680	850	255.5	780	400	680	800	125	1,150
NCLU-308	1,520	450-2	170	1,130	1,880	1,000	283.0	940	480	800	950	140	2,100

Column B retains the drawing callouts exactly as listed. Dimensions and mass apply to the corresponding complete model row. Confirm the current dimensional drawing, operating limits and selected configuration before manufacture or installation.

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SUNTES NCL-136 to NCL-308, NCL1B and NCL2B Lock-Type Centrifugal Clutches

SUNTES NCL-136 to NCL-308, NCL1B and NCL2B Lock-Type Centrifugal Clutches

SUNTES NCL lock-type centrifugal clutches combine a centrifugal clutch and a gear clutch in a compact compound assembly. The range includes NCL, NCL1B and NCL2B configurations, each listed in sizes 136, 156, 186, 218, 248 and 308. The gear-clutch section provides a selectable mechanical connection, while the centrifugal section controls progressive load transmission as the engine accelerates.

Gear clutch ON: progressive starting

With the gear clutch in the ON position, the centrifugal clutch gradually transmits the load while slipping as engine speed rises. At the intended rated operating speed, the assembly is designed to transmit power without continuing slip. The illustrated construction identifies the drive shaft, gear clutch, shifter lever, centrifugal clutch and drum. These components perform different functions and should be considered together when reviewing the drive arrangement.

Gear clutch OFF and switching restriction

With the gear clutch OFF, the centrifugal clutch section does not transmit power even if the engine rotates. The ON/OFF position is changed by sliding the shifter lever. The NCL operating instructions expressly require that ON/OFF switching must not be performed while the engine is running. The selector is therefore not an operating control for shifting a running engine between connected and disconnected states. Incorporate this restriction into the machine operating procedure and confirm the installation-specific control arrangement.

Applications and configuration choice

The compound clutch concept supports applications involving engine-only operation, prevention of reverse rotation of the driving machine, automatic engine/motor changeover, cushioned starting and flexible coupling functions. Which functions are provided depends on the complete system arrangement. Application illustrations include engine-driven vertical-shaft and horizontal-shaft pumps. Review the drive layout, operating sequence and required coupling function before choosing a configuration; the three dimensional variants should not be assumed to be interchangeable.

NCL, NCL1B and NCL2B dimensional differences

The tables retain all eighteen model codes and distinguish the dimensional data for each configuration. NCL1B has two complementary tables: the first gives the main lettered dimensions and the second gives the remaining diameters and mass. Both rows for a particular NCL1B model must be used together. For size 136, the listed masses are 145 kg for NCL-136, 205 kg for NCL1B-136 and 265 kg for NCL2B-136. At size 308, they are 890 kg, 970 kg and 1,050 kg respectively. These differences affect layout, support and handling planning.

Selection and order preparation

Provide the exact configuration prefix and size, driving-machine speed and power, driven load, shaft and mounting dimensions, starting frequency and required operating sequence. Include whether the system uses an engine alone or an engine/motor arrangement. Dimensional data and mass do not establish the allowable torque or a universal engagement-speed setting. Confirm the required performance, alignment, support and installation details for the complete assembly before ordering.

NCL component arrangement: drive shaft, gear clutch, shifter lever, centrifugal clutch and drum

NCL dimensional drawing

NCL1B dimensional drawing

NCL2B dimensional drawing

Models, dimensions and technical data

Dimensions are in millimetres unless otherwise specified. Lettered dimensions refer to the corresponding drawings; diameter symbols and drawing references are retained.

NCL dimensions and mass

Model	A	B	C	D	J	K	M	φP	φR	φS	φT	φU	φW	Mass (kg)
NCL-136	853	335.5	90	200	600	280	673	30	85	143	367	70	85	145
NCL-156	1,008	421.5	127	243	600	280	673	45	115	178	414	85	95	195
NCL-186	1,105	427.5	152	286	630	320	913	65	150	230	494	95	110	290
NCL-218	1,148	470.5	152	284	630	320	913	65	150	230	576	95	110	350
NCL-248	1,330	522.0	153	331	680	320	965	70	165	254	656	125	150	520
NCL-308	1,432	614.0	203	381	740	370	1,126	75	200	305	817	140	190	890

NCL1B main dimensions

Model	A	B	C	D	E	F	G	H	J	K	M
NCL1B-136	853	90	260	269.5	335.5	90	200	125	600	280	673
NCL1B-156	1,008	110	300	286.5	421.5	127	243	140	600	280	673
NCL1B-186	1,105	145	355	322.5	427.5	152	286	155	630	320	913
NCL1B-218	1,148	145	355	322.5	470.5	152	284	155	630	320	913
NCL1B-248	1,330	160	418	390.0	522.0	153	331	190	680	320	965
NCL1B-308	1,432	170	430	388.0	614.0	203	381	215	740	370	1,126

NCL1B additional diameters and mass

Model	φP	φR	φS	φT	φU	Mass (kg)
NCL1B-136	30	85	143	367	70	205
NCL1B-156	45	115	178	414	85	255
NCL1B-186	65	150	230	494	95	350
NCL1B-218	65	150	230	576	95	425
NCL1B-248	70	165	254	656	125	600
NCL1B-308	75	200	305	817	140	970

NCL2B dimensions and mass

Model	A	B	C	D	E	H	J	K	M	φT	φU	Mass (kg)
NCL2B-136	1,303	90	260	269.5	513.5	125	600	280	673	367	70	265
NCL2B-156	1,498	110	300	286.5	611.5	140	600	280	673	414	85	315
NCL2B-186	1,690	145	355	322.5	657.5	155	630	320	913	494	95	410
NCL2B-218	1,752	145	355	322.5	719.5	155	630	320	913	576	95	495
NCL2B-248	2,075	160	418	390.0	849.0	190	680	320	965	656	125	680
NCL2B-308	2,122	170	430	388.0	874.0	215	740	370	1,126	817	140	1,050

Do not operate the ON/OFF shifter while the engine is running. All dimensions refer to the drawing for the specified configuration. Use both NCL1B tables together. Confirm current dimensions and the application rating before manufacture or installation.

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SUNTES FA-53, FA-73, FA-93, FA-123 and FA-136 Centrifugal Clutches

SUNTES FA-53, FA-73, FA-93, FA-123 and FA-136 Centrifugal Clutches

SUNTES FA-Series centrifugal clutches are basic centrifugal clutch units for engine-driven machinery. They are designed to improve the starting characteristics of the driving machine and help protect the shaft system during overload. The listed range consists of FA-53, FA-73, FA-93, FA-123 and FA-136, with a separate dimensional arrangement for each model.

Role in an engine-driven machine

A centrifugal clutch uses the increase in centrifugal force as rotational speed rises to establish frictional power transmission. The resulting engagement characteristic is important when an engine must start and accelerate before carrying its driven load. The clutch, engine and driven equipment therefore need to be selected together. Engine idle speed, the intended operating speed, starting resistance and the inertia of the driven machine all influence the suitability of an installation.

Applications and integration

Typical equipment includes engine-driven drainage pumps, fire pumps, compressors for refrigerated trucks and hydraulic pumps for construction machinery. These applications place different demands on startup duration and repeated engagement. Record the duty cycle, expected number of starts, normal load and possible overload conditions when specifying the unit. A pump installation and a compressor installation can require different selection assumptions even when their engine power or shaft size appears similar.

Flywheel adapter information

When a flywheel adapter is to be manufactured, detailed flywheel dimensions must be supplied. This requirement makes the engine-side interface an essential part of the specification. Provide a dimensioned flywheel drawing and identify the exact engine and clutch model so that the adapter arrangement can be checked. Verify mating geometry, available installation space, mounting details and the relationship between the clutch drawing and the engine assembly before releasing an adapter for manufacture.

Comparing the five models

The dimensional table preserves all eleven lettered dimensions for every model. Dimension A increases from 130 mm for FA-53 to 282 mm for FA-136. FA-123 and FA-136 share some values, including D at 200 mm, G at 165.5 mm, H at 26.5 mm and I at 90 mm, but differ in other dimensions. These shared dimensions do not make the two models interchangeable. Check the complete row against the accompanying drawing, including the values associated with the mounting interface and installation envelope.

Information required for selection and ordering

Specify the complete FA model code, engine identification, flywheel dimensions, operating speed, driven-machine description and startup duty. Include the required installation orientation and any restrictions on available space. The dimensional information below does not establish a torque rating, engagement-speed setting or maximum operating speed. Confirm these application-specific requirements and the current configuration with the supplier before final selection.

FA-Series dimensional drawing and flywheel-side arrangement

Models, dimensions and technical data

Dimensions are in millimetres unless otherwise specified. Lettered dimensions refer to the corresponding drawings; diameter symbols and drawing references are retained.

FA-Series dimensions (mm)

Model	A	B	C	D	G	H	I	J	K	L	M
FA-53	130	9	14	107	77.0	8.0	45	161	70	35	15
FA-73	186	9	57	120	119.0	17.0	50	213	85	50	20
FA-93	220	11	60	149	129.0	26.0	65	270	130	70	20
FA-123	277	13	69	200	165.5	26.5	90	340	143	80	30
FA-136	282	15	67	200	165.5	26.5	90	367	143	85	30

Flywheel adapter manufacture requires detailed flywheel dimensions. All lettered values must be interpreted with the corresponding drawing. Confirm the latest dimensions and specifications before machining mating components, as product dimensions and specifications may change.

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SUNTES C-53 to C-4510 C-Series Centrifugal Clutches

SUNTES C-53 to C-4510 C-Series Centrifugal Clutches

SUNTES C-Series centrifugal clutches connect an engine or other driving machine to a driven load through centrifugal force and friction. The basic clutch arrangement supports smoother starting and helps protect the shaft system when an overload occurs. The series covers twelve listed models, from C-53 to C-4510, with several shoe configurations and engagement-speed settings.

Progressive engagement and power transmission

At rest, the driving unit and drum are separated, so the clutch does not transmit power through frictional contact. As the driving speed increases, centrifugal force moves the shoes outward against the drum. Torque is progressively transferred while the clutch slips during acceleration. At the intended rated operating speed, the clutch is designed to transmit power without continuing slip. This operating sequence allows the driving machine to accelerate before taking the full driven load; the actual starting behaviour depends on the selected shoe arrangement and the connected machinery.

Construction and service identification

The assembly includes a hub boss, shoe supports, shoes, friction linings, link plates, sleeves, rubber bushes, and the drum rim and flange. Springs, mounting bolts, rivets and locking hardware complete the mechanism. The exploded view is useful when identifying the assembly and discussing service parts. Match the complete clutch model, shoe specification and installation arrangement before ordering replacement components; dimensional similarity alone does not establish interchangeability.

Typical equipment applications

The C-Series is intended for engine-driven drainage pumps, fire pumps, refrigerated-truck compressors and hydraulic pumps used in construction machinery. In these applications, the clutch can help reduce the immediate load imposed on the engine during starting. Application selection should account for engine idle speed, normal running speed, driven-machine starting torque, rotating inertia, acceleration time and the frequency of starts. A clutch selected only by shaft diameter may not provide the required engagement behaviour.

Understanding engagement speed and selection

The specification table distinguishes L, H and G shoes. Their engagement figures are speeds in rpm, not maximum permissible running speeds or torque capacities. For example, C-53 lists 1,240 rpm with L shoes, 990 rpm with H shoes and 740 rpm with G shoes. Dashes identify entries for which no value is listed. The standard shaft bores shown for the smaller units include the H7 tolerance designation; larger models show a dash and require confirmation of the actual shaft arrangement.

C-Series exploded view and component reference numbers

C-Series dimensional drawings

Models, dimensions and technical data

Dimensions are in millimetres unless otherwise specified. Lettered dimensions refer to the corresponding drawings; diameter symbols and drawing references are retained.

C-Series dimensions (mm)

Model	A	B	C	D	E	F	G	H	J	K	L	M	N
C-53 ①	38	45	10	161	15	35	60	15	35	80	107	27	70
C-73 ①	54	50	7	213	20	50	85	20	50	88	120	32	85
C-93 ①	67	65	7	270	20	70	115	25	70	102	149	47	130
C-123 ②	89	90	7	340	40	80	135	30	80	130	200	70	143
C-136 ②	100	90	6	367	40	85	160	30	85	130	200	70	143
C-156 ③	115	127	6	414	45	115	146	45	115	148	248	94	178
C-186 ③	150	152	8	494	65	127	196	64	150	176	310	110	230
C-218 ③	152	152	7	576	70	150	210	64	150	172	311	112	230
C-248 ③	172	153	6	656	70	165	235	70	165	238	331	93	254
C-308 ③	203	203	13	817	70	175	288	75	200	248	419	133	305
C-368 ③	254	254	12	984	100	200	292	100	200	283	520	184	350
C-4510 ③	254	280	12	1,245	100	225	405	100	225	318	546	228	349

Standard bore, engagement speed and mass

Model	Unit standard shaft bore	Engagement speed (rpm)			Product mass (kg)
		L shoe	H shoe	G shoe	Unit	Drum
C-53	35φH7	1,240	990	740	1.97	4.5
C-73	45φH7	1,120	900	610	5.27	9.1
C-93	55φH7	900	720	520	9.46	18.0
C-123	65φH7	780	590	-	18.54	28.5
C-136	80φH7	660	380	-	28.58	32.5
C-156	-	620	450	370	46.56	54.7
C-186	-	460	330	280	82.4	87.0
C-218	-	420	300	240	92.3	116.0
C-248	-	350	270	220	156.9	158.4
C-308	-	240	170	160	291.0	287.6
C-368	-	240	190	-	322.0	667.0
C-4510	-	160	120	100	640.0	1,090.0

Engagement-speed data use the MAX Set for C-53 through C-123 and the MID Set for C-136 through C-4510. Versions with a higher engagement speed are available for applications requiring idling operation; confirm the required setting before selection. Circled numbers in the dimension table identify drawing groups. Confirm the latest dimensional drawing, allowable operating conditions and complete application rating before manufacture or installation.

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SUNTES DB-2173 / DB-2173D Hand-Lever Hydraulic Brake Units

SUNTES DB-2173 / DB-2173D Hand-Lever Hydraulic Brake Units

Product Overview

The SUNTES DB-2173 hand-lever unit is a manually operated hydraulic pressure generator. Pulling the lever produces hydraulic pressure for the connected brake circuit, providing an operator-controlled actuation point without a foot-pedal assembly.

Two configurations are listed: DB-2173 and DB-2173D. Their displaced volume is the same, but master-cylinder reference, tank-hose information and mass differ. The complete D suffix should therefore be retained in the ordering description.

Operation and Performance

Both versions provide 5 cm³ hydraulic displacement. DB-2173 uses master-cylinder reference DB-2203M and has a mass of 5.9 kg; DB-2173D uses DB-2203MD and has a mass of 6.4 kg.

The tank-hose entry is a dash for DB-2173 and 5 m for DB-2173D. The fluid specification lists DOT3-equivalent brake fluid or ISO VG32-equivalent mineral oil. Confirm the actual configured fluid version and the connected brake requirements when selecting the complete assembly.

Detailed Specifications

Technical Specifications
Model	DB-2173	DB-2173D
Master cylinder model	DB-2203M	DB-2203MD
Operating fluid	Brake fluid (DOT3 equivalent) or Mineral oil (ISO VG32 equivalent)
Discharge volume (cm3)	5
Tank hose length (m)	-	5
Mass (kg)	5.9	6.4

Model Configuration and Compatibility

SUNTES revised the unit shape in July 2024 following a hand-lever change. Compare the current lever and mounting envelope with the existing assembly when replacing an earlier unit. A matching base code alone does not establish that the old and current outlines are identical.

The generated-pressure characteristic and dimensional drawing belong to this hand-lever assembly. Use those references to assess the operating point and installation; a 5 cm³ displacement figure alone does not define the hydraulic pressure or resulting brake torque.

Drawings and Performance References

Use the dimensional and performance references for the exact assembly. Lettered dimensions correspond to the drawing; a dash or blank in a specification is retained as stated and is not an additional rating.

Dimensional reference for the listed assembly

Hydraulic pressure characteristic

Selection and Installation Considerations

Determine the hydraulic pressure and fluid volume required by the brake before selecting the lever unit. Review the number of connected calipers, operating stroke, control sequence and the pressure required for the intended braking duty.

Check lever position, operator reach, available lever travel, mounting clearances, access for servicing and the route of the tank hose where fitted. Confirm the installed brake, master cylinder and fluid specification as one compatible circuit, then use the matching filling, bleeding and commissioning instructions.

Ordering Information

Specify DB-2173 or DB-2173D, required fluid, connected brake models and quantity, required pressure and displacement, hose arrangement, quantity and installation drawing. Include a nameplate photo and outline of the installed unit, especially for equipment using the earlier lever shape.

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SUNTES DB-2183 / DB-2183D / DB-2184D / DB-2184E / DB-2185D / DB-2185E Combination Brake Units

SUNTES DB-2183 / DB-2183D / DB-2184D / DB-2184E / DB-2185D / DB-2185E Combination Brake Units

Product Overview

SUNTES DB-2183, DB-2184 and DB-2185 combination units bring a foot pedal and a hand lever into the same hydraulic brake-control assembly. The pedal is used for normal brake application. Pulling the hand lever holds the hydraulic pressure at that position for parking use, as described for this product family.

The listed configurations are DB-2183, DB-2183D, DB-2184D, DB-2184E, DB-2185D and DB-2185E. These variants differ in master-cylinder reference, displacement, hose arrangement and mass, so the D/E suffix is an essential part of the selection.

Operation and Performance

DB-2183 and DB-2183D provide 5 cm³ displacement, the DB-2184 configurations provide 6.9 cm³, and the DB-2185 configurations provide 12 cm³. The corresponding master cylinders are DB-2203M, DB-2203MD, DB-2204MD, DB-2204ME, DB-2205MD and DB-2205ME.

Tank-hose length is 5 m for DB-2183D and 10 m for DB-2184D and DB-2185D. A dash is shown for DB-2183, DB-2184E and DB-2185E. Masses are 7.4, 8.4, 9.5, 8.9, 12.5 and 11.9 kg respectively, in the model order listed above. The full dimensional table preserves the individual mounting-envelope references.

Detailed Specifications

Dimensional Reference
Model	A	B	C	D	E	F	G	H	I	J
DB-2183	417	320	290	80	55	161	400	301	271	3
DB-2183D	417	320	290	80	55	161	400	301	271	3
DB-2184D	462	360	330	84	60	175	406	312	291	3
DB-2184E	462	360	330	84	60	175	406	312	291	3
DB-2185D	544	365	335	110	80	162	392	322	346	4
DB-2185E	544	365	335	110	80	162	392	322	346	4
Technical Specifications
Model	DB-2183	DB-2183D	DB-2184D	DB-2184E	DB-2185D	DB-2185E
Master cylinder model	DB-2203M	DB-2203MD	DB-2204MD	DB-2204ME	DB-2205MD	DB-2205ME
Operating fluid	Brake fluid (DOT3 equivalent)or Mineral oil (ISO VG32 equivalent)※
Discharge volume (cm3)	5		6.9		12
Tank hose length (m)	-	5	10	-	10	-
Mass (kg)	7.4	8.4	9.5	8.9	12.5	11.9

Model Configuration and Compatibility

The grouped fluid entry permits DOT3-equivalent brake fluid or ISO VG32-equivalent mineral oil, with a specific exception: DB-2184 types are for DOT3-equivalent brake fluid only. Retain this exception when specifying either DB-2184D or DB-2184E.

SUNTES changed the unit shape in July 2024 following a hand-lever change. A replacement review should therefore compare the existing lever and unit outline with the current drawing, rather than relying only on the base model number.

Drawings and Performance References

Use the dimensional and performance references for the exact assembly. Lettered dimensions correspond to the drawing; a dash or blank in a specification is retained as stated and is not an additional rating.

Dimensional reference for the listed assembly

Hydraulic pressure characteristic — DB-2183

Hydraulic pressure characteristic — DB-2184

Hydraulic pressure characteristic — DB-2185

Selection and Installation Considerations

Check the normal pedal-control requirement and the parking-pressure holding requirement separately. Review the selected brake, hydraulic volume, pressure characteristic and operating sequence as a complete circuit. The combination-unit description does not by itself establish the holding performance of every possible external hydraulic circuit.

Confirm operator access to both controls, pedal and lever travel, mounting dimensions, master-cylinder service space and tank-hose routing. Identify whether the installed equipment uses the pre-July-2024 outline before finalizing a replacement drawing.

Ordering Information

Provide the full DB-2183/DB-2184/DB-2185 model with D or E suffix, fluid specification, brake models and quantity, pressure and displacement requirements, hose arrangement, installation drawing and whether the existing unit predates the July 2024 shape change.

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SUNTES DB-2123 / DB-2104 / DB-2105 / DB-2106 / DB-2107 and C Variants Foot-Pedal Hydraulic Units

SUNTES DB-2123 / DB-2104 / DB-2105 / DB-2106 / DB-2107 and C Variants Foot-Pedal Hydraulic Units

Product Overview

SUNTES DB-2123, DB-2104, DB-2105, DB-2106 and DB-2107 foot-pedal units provide manually controlled hydraulic pressure for compatible brake circuits. Pedal operation applies the brake; SUNTES identifies cranes and travelling carts among the applications for this group.

The specification includes each base model and its C version, giving ten listed configurations. Their master-cylinder sizes, displaced volumes, hose lengths and masses differ, so selection should retain the complete model designation rather than treating the pedal units as one common size.

Operation and Performance

The listed displaced volumes are 5 cm³ for DB-2123, 6.9 cm³ for DB-2104, 12 cm³ for DB-2105, 19.4 cm³ for DB-2106 and 28 cm³ for DB-2107, with the corresponding C variants sharing their family displacement. The master-cylinder references progress from DB-2203M/MC through DB-2207M/MC as shown in the full specification.

Tank-hose length is 5 m for DB-2123C and 10 m for DB-2104C, DB-2105C, DB-2106C and DB-2107C. A dash is shown for the base configurations. Listed masses range from 6.6 kg for DB-2123 to 11.0 kg for DB-2106C and DB-2107C; compare the exact column for the selected model.

Detailed Specifications

Dimensional Reference
Model	A	B	C	D	E	F	G	H	I
DB-2123·DB-2123C	354	320	290	80	55	141	246	193	3
DB-2104·DB-2104C	382	300	270	95	65	168	315	262	4
DB-2105·DB-2105C	464	300	270	95	65	168	379	326	4
DB-2106·DB-2106C DB-2107·DB-2107C	471	300	270	95	65	168	379	326	4
Technical Specifications
Model	DB-2123	DB-2123C	DB-2104	DB-2104C	DB-2105	DB-2105C	DB-2106	DB-2106C	DB-2107	DB-2107C
Master cylinder model	DB-2203M	DB-2203MC	DB-2204M	DB-2204MC	DB-2205M	DB-2205MC	DB-2206M	DB-2206MC	DB-2207M	DB-2207MC
Operating fluid	Brake fluid (DOT3 equivalent)or Mineral oil (ISO VG32 equivalent)※
Discharge volume (cm3)	5		6.9		12		19.4		28
Tank hose length (m)	-	5	-	10	-	10	-	10	-	10
Mass (kg)	6.6	7.0	8.4	8.8	9.3	9.7	10.6	11.0	10.6	11.0

Model Configuration and Compatibility

The grouped fluid entry lists DOT3-equivalent brake fluid or ISO VG32-equivalent mineral oil, but the model-specific exception is important: DB-2104 and DB-2107 types are specified for DOT3-equivalent brake fluid only. Do not apply the grouped mineral-oil entry to those types.

The dimensional table retains the common and model-specific lettered dimensions for the pedal assemblies. Match the drawing to the selected base/C configuration and confirm the installed master cylinder before choosing a replacement unit.

Drawings and Performance References

Use the dimensional and performance references for the exact assembly. Lettered dimensions correspond to the drawing; a dash or blank in a specification is retained as stated and is not an additional rating.

Dimensional reference for the listed assembly

Hydraulic pressure characteristic — DB-2123 / DB-2105

Hydraulic pressure characteristic — DB-2104 / DB-2106 / DB-2107

Selection and Installation Considerations

Select the required displacement from the total hydraulic volume needed by the connected brake. Then check the applicable generated-pressure characteristic and the pressure needed for the intended braking duty. Increasing displaced volume is not the same as increasing the resulting hydraulic pressure or brake torque.

Review the pedal installation position, available operator travel, mounting space and tank-hose route. Use the complete model, fluid limitation and master-cylinder reference during procurement, and verify filling, bleeding and apply/release operation for the assembled circuit.

Ordering Information

Specify the full DB-2123/DB-2104/DB-2105/DB-2106/DB-2107 code including C where required, fluid specification, brake models and quantity, required pressure and displaced volume, hose arrangement, operating duty and installation drawing.

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SUNTES DB-2102 / DB-2102C / DB-2103 / DB-2103C Foot-Pedal Hydraulic Units

SUNTES DB-2102 / DB-2102C / DB-2103 / DB-2103C Foot-Pedal Hydraulic Units

Product Overview

The SUNTES DB-2102 and DB-2103 foot-pedal units generate hydraulic pressure through a pedal-operated master cylinder. Pressing the pedal applies the connected hydraulic brake in the same basic manner as a conventional pedal-operated brake system. SUNTES identifies cranes and travelling carts among the applications for this product group.

Four configurations are listed: DB-2102, DB-2102C, DB-2103 and DB-2103C. The complete C suffix and the associated hose and master-cylinder information must be retained when selecting a unit or replacing an existing pedal assembly.

Operation and Performance

All four listed configurations provide 5 cm³ hydraulic displacement. DB-2102 and DB-2103 use master-cylinder reference DB-2203M; the C versions use DB-2203MC. Tank-hose length is shown as a dash for DB-2102 and DB-2103, and 5 m for DB-2102C and DB-2103C.

The listed masses are 4.6 kg for DB-2102, 5.0 kg for DB-2102C, 4.8 kg for DB-2103 and 5.2 kg for DB-2103C. The dimensional table also distinguishes the two pedal arrangements: drawing dimension A is 380 for the DB-2102 versions and 450 for the DB-2103 versions. Use all lettered dimensions with the matching drawing.

Detailed Specifications

Dimensional Reference
Model	A	B	C	D	E	F	G
DB-2102	380	265	235	75	50	162	140
DB-2102C	380	265	235	75	50	130	140
DB-2103	450	265	235	75	50	162	175
DB-2103C	450	265	235	75	50	130	175
Technical Specifications
Model	DB-2102	DB-2102C	DB-2103	DB-2103C
Master cylinder model	DB-2203M	DB-2203MC	DB-2203M	DB-2203MC
Operating fluid	Brake fluid (DOT3 equivalent) or Mineral oil (ISO VG32 equivalent)
Discharge volume (cm3)	5
Tank hose length (m)	-	5	-	5
Mass (kg)	4.6	5.0	4.8	5.2

Model Configuration and Compatibility

The fluid entry lists DOT3-equivalent brake fluid or ISO VG32-equivalent mineral oil. Establish the configured fluid specification for the complete unit and connected brake circuit before ordering; the fluid entry should not be taken as permission to mix different fluids in service.

The 5 cm³ displacement is a selection limit for the hydraulic volume delivered by the master cylinder. It must be compared with the total volume required by the connected brake, including the relevant operating stroke and number of calipers.

Drawings and Performance References

Use the dimensional and performance references for the exact assembly. Lettered dimensions correspond to the drawing; a dash or blank in a specification is retained as stated and is not an additional rating.

Dimensional reference for the listed assembly

Hydraulic pressure characteristic

Selection and Installation Considerations

Determine the brake pressure needed to achieve the required braking duty and compare it with the model-specific generated-pressure characteristic. Pedal movement, the master cylinder and the selected brake must be reviewed as a system; displacement alone does not define the resulting brake torque.

Check pedal position, operator access, mounting dimensions, hose routing and servicing clearance. For replacements, compare both the base model and the C configuration, including the master-cylinder reference and listed tank-hose arrangement. Follow the matching filling, bleeding and commissioning procedure for the installed brake system.

Ordering Information

State DB-2102, DB-2102C, DB-2103 or DB-2103C, required fluid, connected brake models, hydraulic pressure and volume requirements, desired hose arrangement, quantity and mounting dimensions.

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SUNTES Custom Hydraulic Power Units — Brake-System Design and Application Examples

SUNTES Custom Hydraulic Power Units — Brake-System Design and Application Examples

Product Overview

SUNTES designs and supplies hydraulic power units to suit the operating requirements of its brake installations. The motor, pump and reservoir are selected around the actual brake duty, rather than treated as one fixed combination for every application.

This is a project-specific hydraulic-unit offering. The product information does not assign a single standard ordering model, so the published examples below are reference installations and are not presented as interchangeable stock models.

Operation and Performance

Three application examples illustrate the range of configured systems. An elevator hoisting-machine installation uses a 0.75 kW motor, 13.7 MPa maximum pressure, 1.2 L/min delivery and a 20 L tank. A container-crane luffing installation uses a 0.75 kW motor, 14.0 MPa maximum pressure, 1.5 L/min delivery and a 30 L tank.

The ladle-crane main-hoist example uses a 3.7 kW motor, 16.7 MPa maximum pressure, 9.4 L/min delivery and a 100 L tank. These are complete application examples: motor power, flow, pressure and reservoir volume belong to the stated installation and should not be mixed to imply a different standard unit.

Detailed Specifications

Published Application Examples — Project-Specific Configurations
Application	Motor (kW)	Maximum pressure (MPa)	Flow (L/min)	Tank (L)
Elevator hoisting machine	0.75	13.7	1.2	20
Container-crane luffing equipment	0.75	14.0	1.5	30
Ladle-crane main hoist	3.7	16.7	9.4	100

Model Configuration and Compatibility

The reference hydraulic circuit identifies a reservoir, filler/air breather, oil-level gauge, ball valves, suction strainer, solenoid valve, manifold, hand pump, pressure switch, pressure gauge, terminal box, coupling, motor and gear pump. The supplied circuit is a reference arrangement; the final equipment configuration must be agreed for the project.

The configuration process needs enough information to select the motor, pump and tank capacity. SUNTES requests the required operating conditions for this purpose. A clear brake-circuit description is therefore more useful than requesting a unit solely by the horsepower of an existing motor.

Drawings and Performance References

Use the dimensional and performance references for the exact assembly. Lettered dimensions correspond to the drawing; a dash or blank in a specification is retained as stated and is not an additional rating.

Reference hydraulic circuit; final configuration is project-specific

Selection and Installation Considerations

Define the brake models and quantity, required hydraulic pressure, fluid volume per operation, application and release times, operating frequency, supply voltage and fluid specification. Add the ambient conditions, available installation envelope, pipe-run information and required control sequence. These are engineering inputs for reviewing a configured system, not additional published performance ratings.

For an existing installation, include the hydraulic and electrical drawings, present motor/pump nameplates, tank volume and the operating issue or replacement objective. The proposed unit can then be checked against the actual system requirements and connection points.

Ordering Information

Enquire as a SUNTES custom hydraulic power-unit project and provide the complete operating requirements. Confirm the resulting configuration, drawings and assigned project or unit identification before procurement; no standard model code is invented for this offering.

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SUNTES DB-4154EFT Spring-Applied, Electromagnetically Released E-Booster

SUNTES DB-4154EFT Spring-Applied, Electromagnetically Released E-Booster

Product Overview

The SUNTES DB-4154EFT E-Booster generates hydraulic pressure through spring force and releases the mechanism electromagnetically. Combined with a compatible hydraulic disc brake, it provides an electrically controlled hydraulic actuation arrangement. The spring and electromagnetic release functions must be considered together when defining the complete brake-control sequence.

This model is specified with 6 cm³ hydraulic displacement and master-cylinder configuration DB-2204TS-01. The complete EF or EFT designation matters when selecting or replacing the unit; similarly sized boosters can use different master cylinders or provide different fluid volumes.

Operation and Performance

The electrical specification is DC150–210 V for pull-in and DC20–31 V for holding. Stated continuous holding power is 37 W at DC31 V, while required power supply capacity is 3253 VA. Assembly mass is 53.5 kg. The VA requirement and the holding-power figure describe different electrical conditions and should not be treated as interchangeable ratings.

The stated duty is 360 cycles/h at 50% ED, or continuous energized holding. Continuous energized holding refers to the electromagnetic actuator duty; it does not establish the hydraulic holding behavior of every connected brake circuit. The hydraulic pressure characteristic should be checked against the actual operating point and the brake-fluid volume required.

Detailed Specifications

Technical Specifications
Master cylinder model	DB-2204TS-01
Operating fluid	Brake fluid (DOT3 equivalent)
Discharge volume (cm3)	6
Supply pull-in voltage (V)	DC150–210
Supply holding voltage (V)	DC20–31
Power consumption (W)	37 (continuous holding at DC31 V)
Duty rating	360 cycles/h, 50% ED, or continuous energized holding
Required power supply capacity (VA)	3253
Applicable power supply box	AP-2403
Mass (kg)	53.5

Model Configuration and Compatibility

The listed EFT configuration uses DOT3-equivalent brake fluid and master cylinder DB-2204TS-01.

Use the SUNTES AP-2403 power supply box specified for this E-Booster. SUNTES also specifies a 600 mm cable with an intermediate connector for the E-Booster range. Check the connector arrangement, cable routing and the correct pull-in/holding supply sequence during integration.

Drawings and Performance References

Use the dimensional and performance references for the exact assembly. Lettered dimensions correspond to the drawing; a dash or blank in a specification is retained as stated and is not an additional rating.

Dimensional reference for the listed assembly

Intermediate connector arrangement

Hydraulic pressure characteristic

Selection and Installation Considerations

Determine the hydraulic pressure required by the brake and the total fluid displacement needed for the connected calipers. Compare these requirements with the specific E-Booster data and pressure characteristic, rather than selecting solely by the actuator frame size or electrical power.

Check the electrical supply capacity, operating frequency, required energized duration, mounting clearances and hydraulic fluid. For a replacement, compare the complete booster code, master-cylinder code, mounting drawing and connector arrangement. Confirm the apply/release sequence at the system level with the exact brake and control circuit.

Ordering Information

Specify DB-4154EFT with its full suffix where applicable, AP-2403 supply arrangement, master-cylinder code, required fluid, connected brake models, hydraulic pressure, displaced volume per operation, operating frequency and quantity. Include the installed nameplate and drawing for replacements.

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SUNTES DB-4144EFT Spring-Applied, Electromagnetically Released E-Booster

SUNTES DB-4144EFT Spring-Applied, Electromagnetically Released E-Booster

Product Overview

The SUNTES DB-4144EFT E-Booster generates hydraulic pressure through spring force and releases the mechanism electromagnetically. Combined with a compatible hydraulic disc brake, it provides an electrically controlled hydraulic actuation arrangement. The spring and electromagnetic release functions must be considered together when defining the complete brake-control sequence.

This model is specified with 4.8 cm³ hydraulic displacement and master-cylinder configuration DB-2204TS-01. The complete EF or EFT designation matters when selecting or replacing the unit; similarly sized boosters can use different master cylinders or provide different fluid volumes.

Operation and Performance

The electrical specification is DC150–210 V for pull-in and DC20–31 V for holding. Stated continuous holding power is 22 W at DC31 V, while required power supply capacity is 1912 VA. Assembly mass is 33 kg. The VA requirement and the holding-power figure describe different electrical conditions and should not be treated as interchangeable ratings.

The stated duty is 360 cycles/h at 50% ED, or continuous energized holding. Continuous energized holding refers to the electromagnetic actuator duty; it does not establish the hydraulic holding behavior of every connected brake circuit. The hydraulic pressure characteristic should be checked against the actual operating point and the brake-fluid volume required.

Detailed Specifications

Technical Specifications
Master cylinder model	DB-2204TS-01
Operating fluid	Brake fluid (DOT3 equivalent)
Discharge volume (cm3)	4.8
Supply pull-in voltage (V)	DC150–210
Supply holding voltage (V)	DC20–31
Power consumption (W)	22 (continuous holding at DC31 V)
Duty rating	360 cycles/h, 50% ED, or continuous energized holding
Required power supply capacity (VA)	1912
Applicable power supply box	AP-2403
Mass (kg)	33

Model Configuration and Compatibility

The listed EFT configuration uses DOT3-equivalent brake fluid and master cylinder DB-2204TS-01.

Use the SUNTES AP-2403 power supply box specified for this E-Booster. SUNTES also specifies a 600 mm cable with an intermediate connector for the E-Booster range. Check the connector arrangement, cable routing and the correct pull-in/holding supply sequence during integration.

Drawings and Performance References

Use the dimensional and performance references for the exact assembly. Lettered dimensions correspond to the drawing; a dash or blank in a specification is retained as stated and is not an additional rating.

Dimensional reference for the listed assembly

Intermediate connector arrangement

Hydraulic pressure characteristic

Selection and Installation Considerations

Determine the hydraulic pressure required by the brake and the total fluid displacement needed for the connected calipers. Compare these requirements with the specific E-Booster data and pressure characteristic, rather than selecting solely by the actuator frame size or electrical power.

Check the electrical supply capacity, operating frequency, required energized duration, mounting clearances and hydraulic fluid. For a replacement, compare the complete booster code, master-cylinder code, mounting drawing and connector arrangement. Confirm the apply/release sequence at the system level with the exact brake and control circuit.

Ordering Information

Specify DB-4144EFT with its full suffix where applicable, AP-2403 supply arrangement, master-cylinder code, required fluid, connected brake models, hydraulic pressure, displaced volume per operation, operating frequency and quantity. Include the installed nameplate and drawing for replacements.

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SUNTES DB-4134EFT Spring-Applied, Electromagnetically Released E-Booster

SUNTES DB-4134EFT Spring-Applied, Electromagnetically Released E-Booster

Product Overview

The SUNTES DB-4134EFT E-Booster generates hydraulic pressure through spring force and releases the mechanism electromagnetically. Combined with a compatible hydraulic disc brake, it provides an electrically controlled hydraulic actuation arrangement. The spring and electromagnetic release functions must be considered together when defining the complete brake-control sequence.

This model is specified with 3 cm³ hydraulic displacement and master-cylinder configuration DB-2204TS-01. The complete EF or EFT designation matters when selecting or replacing the unit; similarly sized boosters can use different master cylinders or provide different fluid volumes.

Operation and Performance

The electrical specification is DC150–210 V for pull-in and DC20–31 V for holding. Stated continuous holding power is 17 W at DC31 V, while required power supply capacity is 1495 VA. Assembly mass is 15.5 kg. The VA requirement and the holding-power figure describe different electrical conditions and should not be treated as interchangeable ratings.

The stated duty is 360 cycles/h at 50% ED, or continuous energized holding. Continuous energized holding refers to the electromagnetic actuator duty; it does not establish the hydraulic holding behavior of every connected brake circuit. The hydraulic pressure characteristic should be checked against the actual operating point and the brake-fluid volume required.

Detailed Specifications

Technical Specifications
Master cylinder model	DB-2204TS-01
Operating fluid	Brake fluid (DOT3 equivalent)
Discharge volume (cm3)	3
Supply pull-in voltage (V)	DC150–210
Supply holding voltage (V)	DC20–31
Power consumption (W)	17 (continuous holding at DC31 V)
Duty rating	360 cycles/h, 50% ED, or continuous energized holding
Required power supply capacity (VA)	1495
Applicable power supply box	AP-2403
Mass (kg)	15.5

Model Configuration and Compatibility

The listed EFT configuration uses DOT3-equivalent brake fluid and master cylinder DB-2204TS-01.

Use the SUNTES AP-2403 power supply box specified for this E-Booster. SUNTES also specifies a 600 mm cable with an intermediate connector for the E-Booster range. Check the connector arrangement, cable routing and the correct pull-in/holding supply sequence during integration.

Drawings and Performance References

Use the dimensional and performance references for the exact assembly. Lettered dimensions correspond to the drawing; a dash or blank in a specification is retained as stated and is not an additional rating.

Dimensional reference for the listed assembly

Intermediate connector arrangement

Hydraulic pressure characteristic

Selection and Installation Considerations

Determine the hydraulic pressure required by the brake and the total fluid displacement needed for the connected calipers. Compare these requirements with the specific E-Booster data and pressure characteristic, rather than selecting solely by the actuator frame size or electrical power.

Check the electrical supply capacity, operating frequency, required energized duration, mounting clearances and hydraulic fluid. For a replacement, compare the complete booster code, master-cylinder code, mounting drawing and connector arrangement. Confirm the apply/release sequence at the system level with the exact brake and control circuit.

Ordering Information

Specify DB-4134EFT with its full suffix where applicable, AP-2403 supply arrangement, master-cylinder code, required fluid, connected brake models, hydraulic pressure, displaced volume per operation, operating frequency and quantity. Include the installed nameplate and drawing for replacements.

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