Suntes
Suntes DB-2021B Hydraulic disc brake
Manufacture: Suntes (Sanyo Shoji Co., Ltd.)
Model: DB-2021B
Model code
Dimensions
Specification
| Cylinder Size(inch) | 1･3/8 | 2･1/8 |
|---|---|---|
| Cylinder Area( cm2 ) | 9.57 | 22.88 |
| Hydraulic pressure used(MPa) | 1.00 to 6.86 *1 | 0.50～4.90 *1 |
| Required oil volume( cm3 ) | 1.0 (2.5) | 2.5 (6.0) |
| Disk outer diameter(mm) | φ222～702 | |
| Disc Thickness(mm) | 10.4 | |
| Effective Braking Radius(m) |  -31 | |
| Pad Type | DB-0400 | |
| Pad Effective Wear Allowance(mm) | 10.0 | |
| Pad Friction Coefficient(μ) | Dynamic: 0.3 Static: 0.15 *2 | |
| Hydraulic oil | Brake fluid (DOT3 equivalent) orMineral oil (equivalent to ISO VG32) | |
| mass(kg) | 4.2 | 4.4 |
( ) indicates large retraction
The minimum oil pressure used varies depending on individual differences in sliding resistance, etc., so it is a reference value only.
When using new pads, please break them in to obtain the required brake torque.
The friction coefficient in the specifications column is the value after breaking in.
Pressing force
Torque calculation T = 2 x μ x F x r
T: Torque (Nm)
μ: Pad friction coefficient
F: Pressing force (N)
r: Effective braking radius (m)
If you have any questions about specifications, please contact us.
The dimensions and specifications listed may be changed without notice for improvement purposes
