DYW500‑1600 is a flameproof (Exd I Mb) heavy‑duty electro‑hydraulic drum brake for explosive hazardous areas (underground coal mines, chemical plants, etc.). It's a fail‑safe, spring‑applied brake, widely used on conveyors, hoists, and mining machinery.
DYW: Explosion‑protected electro‑hydraulic drum brake series
- 500: Brake drum diameter 500 mm
- 1600: Rated braking torque 1600 N·m
- Explosion mark: Exd I Mb (coal mine, GB3836.2 compliant); Exd II CT4 (chemical zone 1/2)
- Matching thruster: BEd121/6 or BEd201/6 explosion‑proof electro‑hydraulic thruster
2. Working Principle
- Power ON: BEd thruster extends, overcomes spring force, releases brake (shoes open from drum).
- Power OFF: Thruster pressure drops, strong brake spring retracts shoes, applies brake (fail‑safe).
- Flameproof design: Enclosed explosion‑proof housing contains internal sparks, preventing ignition of external methane/coal dust or explosive gases.
3. Key Technical Parameters
| Item | Specification |
|---|---|
| Rated Braking Torque | 1600 N·m (adjustable) |
| Brake Drum Diameter | 500 mm |
| Matching Thruster | BEd121/6 (1.1 kW) or BEd201/6 (2.0 kW) |
| Thruster Thrust/Stroke | 1200 N/60 mm or 2000 N/60 mm |
| Explosion Class | Exd I Mb (mine) / Exd II CT4 (chemical) |
| Protection Class | IP54 (dust/water resistant) |
| Insulation Class | F |
| Rated Voltage | 380V/660V/1140V, 50Hz, 3‑phase |
| Ambient Temp | ‑20℃ ~ +40℃ |
| Working Duty | S1 (continuous) / S3‑60% (intermittent) |
| Weight | Approx. 280 kg |
4. Core Features
- Dual certification: Mine safety mark + flameproof certificate (GB3836, MT912).
- High torque & large drum: 1600 N·m / 500 mm drum for heavy conveyors/hoists.
- Fail‑safe protection: Power loss = immediate brake application; critical for mining safety.
- Easy maintenance: Snap‑in brake shoes, self‑aligning shoes, self‑lubricating bearings.
- Interchangeable mounting: Same dimensions as YWZ5/YWZ9 series; easy replacement.
5. Typical Applications
- Underground coal mines: Belt conveyors, winches, crushers, hoists.
- Chemical/petrochemical plants: Explosive gas zones (IIA/IIB/IIC, T1–T4).
- Port & metallurgy: Explosion‑risk material handling equipment.
- Heavy machinery: Large cranes, conveyors, and mining hoists.
