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.
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.