SUNTES Industrial Brakes, Clutches and Power Control Products-Sanyo Shoji Co.,Ltd.

SUNTES provides industrial braking, clamping, power transmission and overload-control products. This guide introduces the main product families and brings together 142 detailed English product articles published on this blog.

About SUNTES

SUNTES is the power control brand of the Sanyo group in Japan. Sanyo Shoji handles product sales, while Sanyo Kogyo develops, designs and manufactures the equipment. The group specializes in controlling mechanical power: transmitting movement, stopping rotation, holding equipment in position and responding to overload conditions.

The product range extends from individual disc brakes and replacement pads to hydraulic pressure generators, centrifugal clutches, torque releasers and load-testing equipment. Choosing a product starts with the function required by the machine and continues with the exact operating conditions and installation interfaces.

Find a Product Family

• Disc Brakes, Clampers and Maintenance Parts — 88 articles
• Hydraulic Pressure Generators and Boosters — 22 articles
• Centrifugal Clutches — 4 articles
• Centrifugal Brakes — 1 article
• Torque Releasers — 14 articles
• Load Testers — 3 articles
• Rail Clampers — 2 articles
• Brake Discs — 5 articles
• Hydraulic Piping Components — 3 articles

Each link below opens the corresponding product article, where model coverage, specifications, images and dimensional information can be reviewed. The directory includes maintenance and accessory articles as well as complete equipment.

Read More

SUNTES DB-0300, DB-0301, DB-0302, DB-0303, DB-0305, DB-0306 and DB-0309 Hydraulic Piping Connectors

SUNTES hydraulic piping connectors provide hose nipples, nipples, bushings and two-, three- and four-way connections for brake piping. The range covers several thread and pipe-end systems, making the complete part number essential when selecting an adapter or branch connector. The dimensional tables below retain every listed variant and its corresponding thread designations.

SUNTES hydraulic piping connectors

Thread and dimensional identification

T1 through T4 identify the connections shown in each dimensional drawing. A through E refer to the corresponding drawing dimensions. DM denotes the M10 P1.25 double-flare interface, CU the 3/8-24UNF convex interface, and CM the M10 P1.0 convex interface. Check both thread and seating profile against the mating pipe or equipment. Similar thread diameters do not establish compatibility.

Hose nipples — DB-0302-01 and DB-0302-02

The hose nipple range includes an R1/4 version and an M16 P1.5 version. The asterisk on DB-0302-02 identifies a straight hose-attachment section. Match the T1 thread and the A, B and C dimensions to the installation drawing.

Hose nipples — DB-0302-01 and DB-0302-02 dimensional drawing

Part number	T1	A	B	C
DB-0302-01	R1/4	40	14	9.5
DB-0302-02※	M16 P1.5	36	26	10

Nipples — DB-0306-01, DB-0306-02, DB-0306-A03 and DB-0306-04

All four listed nipples have a G1/8 T1 connection. Their T2 ends differ: R1/8, DM (M10 P1.25), CU (3/8-24UNF), and CM (M10 P1.0). Their A dimensions also differ, so selection should cover both interface and available space.

Nipples — DB-0306-01, DB-0306-02, DB-0306-A03 and DB-0306-04 dimensional drawing

Part number	T1	T2	A	B
DB-0306-01	G1/8	R1/8	29	14
DB-0306-02	G1/8	DM（M10 P1.25）	32	14
DB-0306-A03	G1/8	CU（3/8-24UNF）	37.5	14
DB-0306-04	G1/8	CM（M10 P1.0）	28	14

Bushings — DB-0309 series

The bushing range includes eight part numbers with different combinations of CU, DM, CM, Rc, R and metric threads. DB-0309-01 is specified for the DB-2204T teacher master cylinder. DB-0309-A01 has a different A dimension and must be identified by its full code.

Bushings — DB-0309 series dimensional drawing

Part number	T1	T2	A	B
DB-0309-01	CU（3/8-24UNF）	Rc1/8	23	14
DB-0309-A01	CU（3/8-24UNF）	Rc1/8	31	14
DB-0309-02	DM（M10 P1.25）	Rc1/8	26	14
DB-0309-04	CM（M10 P1.0）	Rc1/8	23	14
DB-0309-05	M14 P1.5	DM（M10 P1.25）	29	19
DB-0309-06	R1/4	CU（3/8-24UNF）	28	19
DB-0309-07	DM（M10 P1.25）	CU（3/8-24UNF）	32	14
DB-0309-08	R1/8	CU（3/8-24UNF）	30	14

Two-way connectors — DB-0301 and DB-0303

Two straight versions provide matching DM or CU connections. The square DB-0303-01 combines CU and Rc1/8 connections. The table retains merged cells where the same connection applies to more than one port.

Two-way connectors — DB-0301 and DB-0303 dimensional drawing — straight

Two-way connectors — DB-0301 and DB-0303 dimensional drawing — square

Part number	T1	T2	A	B	C	D	Shape
DB-0301-01	DM（M10 P1.25）		30	14	-	-	Straight
DB-0301-02	CU（3/8-24UNF）		30	14	-	-	Straight
DB-0303-01	CU（3/8-24UNF）	Rc1/8	42	22	22	8.5	Square

Three-way connectors — DB-0300 series

DB-0300-01 is a square three-way connector with DM connections. DB-0300-03 is hexagonal with Rc1/8 connections. The square DB-0300-05 combines CU connections at T1 and T2 with PF1/4 at T3. Keep the original PF designation when specifying this part.

Three-way connectors — DB-0300 series dimensional drawing — square

Three-way connectors — DB-0300 series dimensional drawing — hexagonal

Part number	T1	T2	T3	A	B	C	D	E	Shape
DB-0300-01	DM（M10 P1.25）			35	25	15	25	5.5	Square
DB-0300-03	Rc1/8			-	38	20	22	6.5	Hexagonal
DB-0300-05	CU（3/8-24UNF）		PF1/4	50	30	20	40	5.5	Square

Four-way connector — DB-0305-01

DB-0305-01 provides four DM (M10 P1.25) connections. Its A through E dimensions are shown in the table and referenced in the drawing. Check the port layout and mounting dimensions together when arranging a multi-branch hydraulic line.

Four-way connector — DB-0305-01 dimensional drawing

Part number	T1	T2	T3	T4	A	B	C	D	E
DB-0305-01	DM（M10 P1.25）				35	36	15	25	5.5

Selection information

Select the connector function first, then compare every port designation with the intended mating component. Check the envelope and mounting dimensions against the drawing before finalizing the arrangement. Preserve suffixes such as A03 and A01 in purchase documentation because these identify distinct variants. Dimensions and specifications may change with product improvement.

Read More

SUNTES DB-0113 High-Pressure Brake Hose — 19.5 MPa Working Pressure

The SUNTES DB-0113 is a high-pressure hose in the brake-system piping range. It provides a flexible connection option alongside copper piping and hydraulic connectors. The model has a specified inside diameter of 3.2 mm and is available in ten standard lengths, allowing the line layout to be selected to suit the distance between connection points.

SUNTES DB-0113 high-pressure hose

Technical specifications

Hose inside diameter (mm)	φ3.2
Burst pressure (MPa)	78
Maximum working pressure (MPa)	19.5
Maximum operating temperature (°C)	70
Minimum bend radius (mm)	12

The maximum working pressure is 19.5 MPa, while the burst pressure is 78 MPa. These are different specifications: the burst value does not define a permissible operating pressure. The listed maximum operating temperature is 70°C, and the minimum bend radius is 12 mm. A hose selection should satisfy the required pressure, temperature and routing conditions together.

Dimensions and available lengths

DB-0113 hose dimensional drawing

Length L (m)	0.5	1	1.5	2	2.5	3	5	7	10	12

Standard lengths L are 0.5, 1, 1.5, 2, 2.5, 3, 5, 7, 10 and 12 m. Use the dimensional drawing when identifying the length reference and end-connection arrangement. The length table is expressed in metres, whereas the bend radius is expressed in millimetres. Keeping those units distinct helps avoid errors when preparing a bill of materials or checking a compact installation.

Selection and installation planning

Begin with the required connection route and select an appropriate standard length. Check that the proposed bends can respect the 12 mm minimum radius and that the operating temperature remains within the stated limit. Confirm the end connections against the mating component drawings; the hose model alone should not be used as evidence that every brake or booster port is directly compatible.

For a circuit containing several piping components, evaluate each component against its own published limits. The DB-0113 hose rating does not automatically establish the pressure rating of a copper pipe, adapter or complete brake assembly. Likewise, a dimension shown on the hose drawing should be interpreted in the context of that drawing rather than transferred to a different connector series.

Ordering information

Specify SUNTES DB-0113, the selected standard length L, and the required mating connection details when preparing an enquiry. Verify pressure, temperature, routing and interface requirements for the intended brake circuit before final selection. Dimensions and specifications may change with product improvement.

Read More

SUNTES DB-0104, DB-0105, DB-0106, DB-0107, DB-0115, DB-0124 and DB-0125 Copper Brake Pipes

SUNTES copper brake pipes connect hydraulic disc brakes to compatible hydraulic generating units. The range combines a 4.76 mm outside-diameter pipe with seven specified end combinations and sixteen standard lengths. Selection depends on the actual port at each end of the circuit: the pipe-end profile and nut thread must both match the mating brake, booster or pedal unit.

SUNTES copper brake pipe

Pipe dimensions and standard lengths

The specified pressure resistance is 15 MPa. Standard lengths extend from 0.5 m to 20 m, as shown below. Length L is in metres; use the dimensional drawing to interpret the end arrangement. The table lists the available combinations without implying that different end profiles are interchangeable.

Copper pipe dimensional drawing

Model	End combination	Pipe length L (m)																Pipe outside diameter / pressure resistance
DB-0104	DM-CM	0.5	1	1.5	2	2.5	3	4	5	6	7	8	9	10	12	15	20	φ4.76／15MPa
DB-0105	DM-CU
DB-0106	DM-DM
DB-0107	CU-CU
DB-0115	CU-CM
DB-0124	DU-DM
DB-0125	CU-DU

Pipe-end profiles

DM end profile

CU end profile

CM end profile

DU end profile

DM uses a double-flare end with an M10 P1.25 pipe-nut thread. CU uses a convex end with a 3/8-24UNF thread. CM uses a convex end with an M10 P1.0 thread. DU uses a double-flare end with a 3/8-24UNF thread. CU and DU therefore share the listed thread size but have different end profiles; specifying only the thread is insufficient.

Equipment compatibility and pipe nuts

Hydraulic disc brake: DM end

DB-2051
Pipe end	Double flare
Pipe nut thread	M10 P1.25
Model	DB-0304-01

Hydraulic disc brake: CU end

DB-2021（B.S.H）
Pipe end	Convex
Pipe nut thread	3/8-24UNF
Model	DB-0304-02

Hydraulic disc brake: CM end

DB-2008
Pipe end	Convex
Pipe nut thread	M10 P1.0
Model	DB-0304-03

Air booster: DM end

DB-3223～DB-5244
Pipe end	Double flare
Pipe nut thread	M10 P1.25
Model	DB-0304-01

Manual booster: CU end

DB-2413～DB-2415
Pipe end	Convex
Pipe nut thread	3/8-24UNF
Model	DB-0304-02

E-Booster EF series: DM end

DB-4133EF～DB-4155EF
Pipe end	Double flare
Pipe nut thread	M10 P1.25
Model	DB-0304-01

E-Booster EFT series: DU end

DB-4134EFT～DB-4154EFT
Pipe end	Double flare
Pipe nut thread	3/8-24UNF
Model	DB-0304-02

Foot-pedal unit: DM end

DB-2102～DB-2107
Pipe end	Double flare
Pipe nut thread	M10 P1.25
Model	DB-0304-01

Foot-pedal unit with cushion valve: CU end

With cushion valve
Pipe end	Convex
Pipe nut thread	3/8-24UNF
Model	DB-0304-02

Foot-pedal unit with teacher master cylinder: DU end

With teacher master cylinder
Pipe end	Double flare
Pipe nut thread	3/8-24UNF
Model	DB-0304-02

Ordering and selection example

For a connection between a DB-2021 brake and a DB-3223A air booster, identify the brake end as CU and the booster end as DM. The corresponding combination is DM-CU, supplied as DB-0105. Select the required length from the standard length table. The order designation combines the base model and length; a 0.5 m DB-0105 pipe is designated DB-0105-0.5.

Apply the same process to every connection: identify both mating units, check their end profiles, select the matching combination, and then determine the required length. The DB-0304-01, DB-0304-02 and DB-0304-03 numbers in the compatibility tables refer to the listed pipe-nut components; they are separate from the complete pipe assembly model. Dimensions and specifications may change with product improvement.

Read More

SUNTES DB-0521T, DB-0522T and DB-0533T Water-Cooled Brake Discs

SUNTES DB-0521T, DB-0522T and DB-0533T Water-Cooled Brake Discs

SUNTES water-cooled brake discs are available as DB-0521T, DB-0522T and DB-0533T. Their specifications include rotational-speed limits, inertia, allowable energy absorption rate, cooling-water flow, water pressure and mass. The T-suffix model and its cooling requirements must be selected together.

Three model-specific cooling duties

DB-0521T lists an allowable energy absorption rate of 14.7 kN·m/s, water flow of 10 L/min and maximum rotational speed of 1,800 min⁻¹. DB-0522T lists 22.0 kN·m/s, 15 L/min and 1,500 min⁻¹. DB-0533T lists 29.4 kN·m/s, 20 L/min and 1,000 min⁻¹. Cooling-water pressure is listed as 0.2 MPa for all three. The unit kN·m/s expresses energy per unit time, numerically equivalent to kW; it must not be read as an amount of energy in kN·m.

Dimensions and water connections

The dimensional drawing identifies B, t, C, D, d, F, the pitch circle, n-H, A, E, G, J, L and the M.N connection callout. The M.N entries are Rc1/2 for DB-0521T and DB-0522T and Rc3/4 for DB-0533T. Retain these thread designations when specifying the water connections. Fastener quantities, thread sizes and lengths also differ by model and must be checked against the selected row.

Inertia, mass and installation

The listed moments of inertia are 0.06, 0.35 and 1.3 kg·m² for DB-0521T, DB-0522T and DB-0533T respectively. Their masses are 13, 32 and 53 kg. Review the rotating assembly, mounting interface, available space and water-line routing as part of the installation. Confirm the connection arrangement and utility conditions before manufacturing adapters or releasing the assembly drawing.

Selection and order information

Provide the exact T model, mating brake, operating speed, absorbed-power duty, test or braking cycle and available cooling-water conditions. Check speed and absorption limits against the actual duty rather than treating the highest tabulated figures as a complete operating envelope. The page does not specify every coolant-temperature, water-quality or service requirement, so these details require confirmation for the installation. Use the current dimensional drawing and approved cooling arrangement when ordering or replacing the disc.

Water-Cooled Brake Discs dimensional drawing

Complete technical data

Dimensions and mounting interface

Model	B	t	C	D	d	F	P.C.D.	n-H	A	E	G	J	L	M.N
DB-0521T	270	20	142	125	60	8	105	6-M10×18L	70	34	100	127	212	Rc1/2
DB-0522T	350	20	216	180	100	10	150	6-M12×20L	76	40	100	127	218	Rc1/2
DB-0533T	500	38	270	225	135	10	190	12-M16×18L	84	45	111	144	245	Rc3/4

Speed, inertia and mass with cooling requirements

Model	DB-0521T	DB-0522T	DB-0533T
Maximum rotational speed (min⁻¹)	1800	1500	1000
Moment of inertia (kg·m²)	0.06	0.35	1.3
Allowable energy absorption rate (kN·m/s)	14.7	22.0	29.4
Water flow (L/min)	10	15	20
Cooling water pressure (MPa)	0.2	0.2	0.2
Mass (kg)	13	32	53

Dimensions and specifications may change as products are improved. Confirm the selected configuration and latest drawing before manufacture or installation.

Read More

SUNTES DB-0511H, DB-0521H, DB-0522H, DB-0531H, DB-0533H and DB-0534H Flange-Type Brake Discs

SUNTES DB-0511H, DB-0521H, DB-0522H, DB-0531H, DB-0533H and DB-0534H Flange-Type Brake Discs

SUNTES flange-type brake discs include DB-0511H, DB-0521H, DB-0522H, DB-0531H, DB-0533H and DB-0534H. The range contains one solid disc and five ventilated configurations, with model-specific dimensions, mounting interfaces and speed limits.

Solid and ventilated configurations

DB-0511H is identified as solid, with D at 260 and thickness t at 10.4. DB-0521H and DB-0522H are ventilated discs with t at 20 and D at 270 and 350 respectively. DB-0531H, DB-0533H and DB-0534H are ventilated discs with t at 38 and D at 382, 500 and 550. The construction column is retained in the dimensional table to distinguish these arrangements.

Important locating-fit exception

The d dimension is generally specified with an H8 tolerance. DB-0533H is the explicit exception: its marked 130 entry uses H7. Preserve this exception when checking a mating flange or preparing a machining drawing. DB-0533H and DB-0534H share several mounting values, but the locating-fit note must not be transferred indiscriminately between them.

Rotational speed and rotating-assembly data

Maximum speeds are 2,200 min⁻¹ for DB-0511H and DB-0521H, 1,650 for DB-0522H, 1,500 for DB-0531H, 1,150 for DB-0533H and 1,050 for DB-0534H. Moments of inertia range from 0.03 to 1.48 kg·m² and masses from 3.8 to 43 kg. Use the individual model column in the specification table for the correct combination.

Selection and ordering

Specify the complete H-suffix model, brake identification, required operating speed, braking duty and mating-flange dimensions. Review disc thickness, locating diameter and fit, pitch-circle diameter, hole pattern and offset with the drawing. A dash in the table is retained as listed and must not be interpreted as zero. If the customer plans to manufacture a disc, consult the supplier for the required design review. Confirm the current drawing and complete braking-system suitability before machining or fitting the component.

Flange-Type Brake Discs dimensional drawing

Complete technical data

Dimensions and mounting interface

Model	D	t	B	C	d H8	F	P.C.D.	n-φH	A	Construction
DB-0511H	260	10.4	134	124	74	9	94	4-10.5	38.2	Solid
DB-0521H	270	20	140	128	60	10	86	6-10.5	44	Ventilated
DB-0522H	350	20	220	160	85	14	116	8-13	35	Ventilated
DB-0531H	382	38	-	190	108	17	142	8-15	51	Ventilated
DB-0533H	500	38	-	260	130※	18	180	8-17	50	Ventilated
DB-0534H	550	38	-	260	130	18	180	8-17	50	Ventilated

Speed, inertia and mass

Model	DB-0511H	DB-0521H	DB-0522H	DB-0531H	DB-0533H	DB-0534H
Maximum rotational speed (min⁻¹)	2200	2200	1650	1500	1150	1050
Moment of inertia (kg·m²)	0.03	0.05	0.11	0.28	1.0	1.48
Mass (kg)	3.8	5.3	10	18	35	43

* DB-0533H uses H7 for the marked d dimension; other listed d entries use H8.

Dimensions and specifications may change as products are improved. Confirm the selected configuration and latest drawing before manufacture or installation.

Read More

SUNTES DB-0525FB, DB-0526FB, DB-0527FB, DB-0535FB, DB-0536FB, DB-0537FB, DB-0538FB and DB-0539FB Flange-Boss Brake Discs

SUNTES DB-0525FB, DB-0526FB, DB-0527FB, DB-0535FB, DB-0536FB, DB-0537FB, DB-0538FB and DB-0539FB Flange-Boss Brake Discs

SUNTES flange-boss brake discs combine a flange mounting arrangement with a boss interface. The eight listed models are DB-0525FB, DB-0526FB, DB-0527FB, DB-0535FB, DB-0536FB, DB-0537FB, DB-0538FB and DB-0539FB. Retain the FB suffix when selecting or ordering the assembly.

Disc sizes and mounting geometry

The DB-0525FB through DB-0527FB group uses thickness t of 20, with D dimensions of 500, 600 and 700. DB-0535FB through DB-0539FB use t at 38, with D values from 500 through 900. The drawing also specifies the d1 pilot and maximum bore, d2, d3, overall L, pitch-circle diameter and n-Q fastener callout. A shared outer diameter does not make a 20-thick and a 38-thick model interchangeable.

Model-specific performance data

Maximum rotational speeds range from 1,450 to 2,600 min⁻¹ across the listed models. For example, DB-0525FB and DB-0535FB both list 2,600 min⁻¹, but their inertia and mass differ: 1.1 kg·m² and 51 kg for DB-0525FB, compared with 2.0 kg·m² and 76 kg for DB-0535FB. The larger DB-0539FB lists 20.12 kg·m² and 276 kg. All inertia and mass values are stated at the pilot-bore dimensions.

Drawing and shaft-interface review

Use the separate pilot-bore and maximum-bore entries under d1. Check the flange bolt circle and fastener pattern together with the boss interface and disc offset. The complete row is required to prepare mating components; similarity in one diameter or bolt size is insufficient. Confirm the brake clearance and final bore arrangement for the actual installation.

Ordering and manufacture

Provide the full FB model code, brake identification, operating speed, braking duty, finished bore requirement and flange interface. Include any installation-space and handling constraints associated with the selected mass. For customer-manufactured discs, request a design review before production. The dimensional and speed data do not establish a universal braking torque or thermal duty. Confirm the current drawing and approved application configuration before machining or ordering.

Model designation guide

Flange-Boss Brake Discs dimensional drawing

Complete technical data

Dimensions and mounting interface

Model	D	t	d1		d2	d3	L	P.C.D.	n-Q
			Pilot bore	Max.
DB-0525FB	500	20	35	95	160	250	125	205	8-M16
DB-0526FB	600	20	35	115	190	280	145	240	10-M16
DB-0527FB	700	20	50	130	215	305	165	260	12-M16
DB-0535FB	500	38	35	95	160	250	143	205	8-M16
DB-0536FB	600	38	35	115	190	280	163	240	10-M16
DB-0537FB	700	38	50	130	215	305	183	260	12-M16
DB-0538FB	800	38	50	150	250	340	208	295	12-M16
DB-0539FB	900	38	50	170	280	380	228	330	12-M18

Speed, inertia and mass

Model	DB-0525FB	DB-0526FB	DB-0527FB	DB-0535FB	DB-0536FB	DB-0537FB	DB-0538FB	DB-0539FB
Maximum rotational speed (min⁻¹)	2600	2200	1900	2600	2200	1900	1600	1450
Moment of inertia (kg·m²)	1.1	2.2	4.0	2.0	3.94	7.27	12.48	20.12
Mass (kg)	51	75	103	76	111	152	210	276

Inertia and mass values are stated at the pilot-bore dimensions.

Dimensions and specifications may change as products are improved. Confirm the selected configuration and latest drawing before manufacture or installation.

Read More

SUNTES DB-0511E, DB-0513E, DB-0523E and DB-0525E Boss-Type Brake Discs

SUNTES DB-0511E, DB-0513E, DB-0523E and DB-0525E Boss-Type Brake Discs

SUNTES boss-type brake discs comprise DB-0511E, DB-0513E, DB-0523E and DB-0525E. Their dimensional tables distinguish disc diameter, thickness, boss geometry, pilot bore, maximum bore and axial dimensions. The integral boss arrangement must be checked against the intended shaft and brake layout.

Diameter and thickness choices

DB-0511E has a listed D dimension of 260 and thickness t of 10.4. DB-0513E and DB-0523E both have D at 350, but their thicknesses are 10.4 and 20 respectively. DB-0525E has D at 500 and t at 20. The two 350-size discs therefore have materially different geometry and must be selected by complete model code.

Speed, inertia and mass

Maximum speeds are 2,200 min⁻¹ for DB-0511E, 1,650 min⁻¹ for DB-0513E and DB-0523E, and 1,150 min⁻¹ for DB-0525E. Their listed moments of inertia are 0.04, 0.13, 0.21 and 0.9 kg·m²; masses are 7.5, 16, 23 and 47 kg. The inertia and mass figures apply at the pilot-bore dimensions, which is the reference condition for comparing these values.

Bore and installation checks

The d heading is split into pilot-bore and maximum-bore subcolumns. Use both entries for the exact model rather than interpreting the maximum bore as the supplied bore. Check boss diameters, axial length, disc thickness and available brake clearance using the complete drawing. Confirm the finished bore and mating shaft details before machining or selecting a replacement.

Application and ordering

Specify the complete E-suffix model, operating speed, braking duty, brake model and required finished shaft interface. Account for the selected disc's inertia and mass in the machine design. The speed limit does not by itself define a permissible braking-energy duty or assembly torque capacity. If a disc is to be manufactured by the customer, consult the supplier for the required design details. Confirm the current dimensional drawing and configuration before manufacturing mating components.

Model designation guide

Boss-Type Brake Discs dimensional drawing

Complete technical data

Dimensions and mounting interface

Model	D	t	B	C	d		A	L
					Pilot bore	Max.
DB-0511E	260	10.4	120	100	20	60	68	70
DB-0513E	350	10.4	210	110	30	60	100	110
DB-0523E	350	20	210	125	30	70	110	120
DB-0525E	500	20	360	160	35	90	130	140

Speed, inertia and mass

Model	DB-0511E	DB-0513E	DB-0523E	DB-0525E
Maximum rotational speed (min⁻¹)	2200	1650	1650	1150
Moment of inertia (kg·m²)	0.04	0.13	0.21	0.9
Mass (kg)	7.5	16	23	47

Inertia and mass values are stated at the pilot-bore dimensions.

Dimensions and specifications may change as products are improved. Confirm the selected configuration and latest drawing before manufacture or installation.

Read More

SUNTES DB-0503E and DB-0504E Mini Brake Discs

SUNTES DB-0503E and DB-0504E Mini Brake Discs

SUNTES DB-0503E and DB-0504E mini brake discs are compact disc options for use with suitable SUNTES braking equipment. The two models have different rotational-speed limits, moments of inertia and masses. Their common dimensional drawing uses parenthesized dimensions to identify DB-0503E; dimensions outside those parentheses must not be assumed to describe both models.

Two distinct disc specifications

DB-0503E has a maximum rotational speed of 3,800 min⁻¹, a listed moment of inertia of 0.002 kg·m² and a mass of 1.1 kg. DB-0504E has a maximum rotational speed of 2,800 min⁻¹, a listed moment of inertia of 0.008 kg·m² and a mass of 2.1 kg. Select using the complete model designation and its own rating rather than treating the two mini discs as interchangeable.

Pilot-bore basis of the data

The inertia and mass values apply to the disc at the published pilot-bore dimensions. If the bore is subsequently machined, the completed component differs from that reference condition. Retain the pilot-bore basis when comparing catalogue figures or preparing a rotating-assembly calculation. Confirm the finished shaft interface and any machining requirements before manufacture.

Dimensional drawing and assembly review

Use the dimensional drawing to check the disc envelope, thickness and mounting arrangement. The note that parenthesized dimensions refer to DB-0503E is essential when interpreting the drawing. Check the selected disc against the brake installation geometry and the mating shaft or mounting component. A matching speed rating alone does not establish mechanical compatibility.

Selection and ordering

Provide the exact DB-0503E or DB-0504E model, operating speed, braking duty, mating brake identification and the required finished interface. Include any installation-space restrictions or replacement-part requirements. The table below does not assign a universal braking torque or thermal absorption capacity to either disc. Those requirements must be evaluated with the selected brake and actual duty. Confirm the current drawing and approved machining details before ordering or fitting a replacement.

Model designation guide

Mini Brake Discs dimensional drawing

Parenthesized dimensions in the drawing refer to DB-0503E.

Complete technical data

Speed, inertia and mass

Model	DB-0503E	DB-0504E
Maximum rotational speed (min⁻¹)	3800	2800
Moment of inertia (kg·m²)	0.002	0.008
Mass (kg)	1.1	2.1

Inertia and mass values are stated at the pilot-bore dimensions.

Dimensions and specifications may change as products are improved. Confirm the selected configuration and latest drawing before manufacture or installation.

Read More

SUNTES RC-1020L, RC-1040L, RC-1075L and RC-1120L Long-Stroke Rail Clampers

SUNTES RC-1020L, RC-1040L, RC-1075L and RC-1120L Long-Stroke Rail Clampers

SUNTES long-stroke rail clampers directly grip the rail to restrain large cranes against wind-induced runaway. The range comprises RC-1020L, RC-1040L, RC-1075L and RC-1120L. Their extended travel is designed to maintain the specified clamping force as rail-head width decreases through wear, within the stated conditions.

Rail wear accommodation

The conventional rail clamper has a recommended rail-side wear range of 2 mm. With new shoes, the long-stroke type can maintain its specified clamping force with up to 12 mm wear relative to the standard rail-head width. The 12 mm figure is conditional on new shoes and should not be read as 12 mm permitted on each side. The separately listed shoe wear allowance is 1 mm per side. Review rail wear and shoe wear together when assessing an installation.

Rail geometry and tracking

The internal unit follows rail undulation along the travel direction, accommodating lateral variation of ±30 mm and vertical variation of ±25 mm. The design can be adapted to standard rail profiles. However, wear accommodation does not make every deformed rail suitable for clamping. Rails with a rolled-over top edge, a tilted top surface, a step on the side or a bulged side require correction or replacement to restore a clampable profile. The illustrations show the wear example and the rail conditions that need attention.

Clamping force versus holding force

RC-1020L, RC-1040L, RC-1075L and RC-1120L have clamping forces of 196, 392, 735 and 1,176 kN respectively. At the listed coefficient of friction of 0.25, the corresponding runaway holding forces are 98, 196, 368 and 588 kN. These two sets of ratings describe different functions and must remain separate in the crane restraint calculation. The largest clamping-force figure is not the longitudinal holding-force rating.

Hydraulic unit, motion and electrical supply

The hydraulic power unit is integrated for convenient installation; a separately located unit is available as an option. Cylinder diameters range from 105 to 230 mm, and strokes from 115 to 132 mm. Release time is approximately 5 seconds, while clamping time is adjustable with a minimum of approximately 2 seconds. These marked timing values apply to new rails without deformation or wear. Motor power is 1.5, 2.2, 3.7 or 5.5 kW by model, and tank capacity is 5 or 10 L as listed. Motor and control supply options are specified separately in the table.

Monitoring, fluid and coating

Interlock devices include temperature and level switches. The listed working fluid is antiwear hydraulic oil in ISO VG22 or VG32 grades. The coating specification uses an epoxy-resin primer and polyurethane-resin topcoat. Cold-climate, seismic-isolation, special electrical-supply and special-coating configurations are available for review. Specify the actual installation environment and required power supply when requesting the final configuration.

Inspection and selection

Before shipment, the clamper undergoes a runaway holding-force test. It grips a rail in the test apparatus while load is applied, and the rail is checked for movement. For application selection, provide the complete model, required holding force, rail standard and measured condition, alignment variations, crane mounting details and available utilities. Confirm the current drawing, maintenance criteria and operating sequence before approving the installation.

Dimensions and technical specifications

Lettered dimensions refer to the corresponding drawing. Retain the complete model suffix when selecting an assembly.

Dimensional data

Model	A	B	C	D	E	F	G
RC-1020L	1180	935	1180	φ26	750	55	65
RC-1040L	1220	1065	1290	φ33	830	80	95
RC-1075L	1320	1225	1450	φ39	980	85	95
RC-1120L	1500	1335	1660	φ39	1090	85	130

Performance, operating conditions and utilities

Model	RC-1020L	RC-1040L	RC-1075L	RC-1120L
Clamping force (kN)	196	392	735	1,176
Coefficient of friction	0.25
Runaway holding force (kN)	98	196	368	588
Cylinder diameter (mm)	φ105	φ145	φ190	φ230
Cylinder stroke (mm)	115	116	121	132
Release time	Approximately 5 s*
Clamping time	Adjustable (minimum approximately 2 s*)
Rail-head width wear allowance	Accommodates up to 12 mm wear relative to the standard rail-head width
Shoe wear allowance	1 mm per side
Motor power (kW)	1.5	2.2	3.7	5.5
Tank capacity (L)	5	5	10	10
Power supply: motor	AC 200/400 V, 50 Hz, three-phase; AC 200/220/400/440 V, 60 Hz, three-phase
Power supply: control	AC 100–110 V / AC 200–220 V, 50/60 Hz, single-phase
Interlock devices	Temperature switch and level switch
Hydraulic fluid	Antiwear hydraulic oil, ISO VG22 / VG32
Coating specification	Primer: epoxy-resin paint; topcoat: polyurethane-resin paint
Options	Cold-climate specification, seismic-isolation specification, special power supply, special coating and other options

* Marked operating times apply to a new rail without deformation or wear. The 12 mm rail-head wear accommodation is stated with new shoes.

Model designation guide

Rail-head wear example for a 100 kg rail

Rail condition requiring correction: rolled-over top edge

Rail condition requiring correction: tilted top surface

Rail condition requiring correction: step on the side

Rail condition requiring correction: bulged side

Lateral rail tracking: ±30 mm

Vertical rail tracking: ±25 mm

Holding-force test apparatus

Long-stroke rail clamper dimensional drawing

Dimensions and specifications may change as products are improved. Confirm the selected configuration and latest drawing before manufacture or installation.

Read More

SUNTES RC-1013, RC-1018, RC-1026, RC-1038, RC-1050 and RC-1075 Rail Clampers

SUNTES RC-1013, RC-1018, RC-1026, RC-1038, RC-1050 and RC-1075 Rail Clampers

SUNTES RC-Series rail clampers directly grip the rail to restrain crane movement caused by typhoons or sudden strong winds. Intended equipment includes large travelling cranes such as unloaders and container cranes. The standard range consists of RC-1013, RC-1018, RC-1026, RC-1038, RC-1050 and RC-1075, with model-specific clamping forces and installation dimensions.

Integrated hydraulic arrangement

The clamper incorporates a hydraulic power unit in an integrated assembly to simplify installation. Its internal arrangement accommodates rail-alignment variations, and the functional components are designed with durability in mind. Various rail types can be accommodated, subject to confirmation of the actual rail profile and selected configuration. The complete installation must match the crane structure, rail geometry and available space.

Six clamping-force ratings

The listed rail clamping forces are 127 kN for RC-1013, 176 kN for RC-1018, 254 kN for RC-1026, 372 kN for RC-1038, 490 kN for RC-1050 and 735 kN for RC-1075. The specification table also retains the corresponding kgf figures. These are clamping-force ratings; they must not be substituted directly for a longitudinal holding-force requirement. Selection requires the intended resistance to crane movement and the actual rail/contact conditions to be reviewed together.

Model-specific dimensions

The dimensional table includes A through K, the combined L/M/N reference, P and diameter Q. Parenthesized E, H and I references are preserved as shown on the drawing. RC-1013 and RC-1018 share many dimensions but differ in the H and I references. RC-1038 and RC-1050 also have different height-related drawing entries despite sharing several other values. Compare the full model row when checking a replacement or preparing mounting components.

Rail condition and application review

Identify the rail standard, head width, wear condition and alignment before specifying the clamper. The conventional arrangement has a recommended rail-side wear range of 2 mm, as described in the comparison with the long-stroke version. Where increased wear accommodation is needed, review the separate long-stroke configuration rather than assuming that a higher clamping-force standard model provides the same travel. Confirm the installation limits and current dimensional drawing for the selected unit.

Ordering information

Provide the complete RC model, crane application, required restraint duty, rail profile and condition, mounting arrangement and electrical/hydraulic integration requirements. Allow access for inspection and service. The standard dimensional and force tables do not establish a universal release time, motor rating or allowable wind speed. Confirm those application-specific requirements before ordering or manufacturing brackets and mating components.

Dimensions and technical specifications

Lettered dimensions refer to the corresponding drawing. Retain the complete model suffix when selecting an assembly.

Dimensional data

Model	A	B	C	D	（E）	F	G	（H）	（I）	J	K	L, M, N	P	φQ
RC-1013	700	820	40	730	400	25	460	1060	1090	630	55	65	8	26
RC-1018	700	820	40	730	400	25	460	1200	1230	630	55	65	8	26
RC-1026	730	850	40	750	400	25	480	1230	1260	660	60	70	8	26
RC-1038	780	935	40	800	400	28	520	1290	1320	700	80	95	8	33
RC-1050	780	935	40	810	400	28	520	1360	1390	700	80	95	8	33
RC-1075	820	975	40	870	400	32	590	1540	1570	730	85	95	8	36

Rail clamping force

Model	Rail clamping force
	kN	kgf
RC-1013	127	13000
RC-1018	176	18000
RC-1026	254	26000
RC-1038	372	38000
RC-1050	490	50000
RC-1075	735	75000

Integrated hydraulic power unit

Standard rail clamper dimensional drawing

Dimensions and specifications may change as products are improved. Confirm the selected configuration and latest drawing before manufacture or installation.

Read More