DJPZ‑850 is a normally‑closed, AC‑powered electromagnetic disc brake designed for direct mounting on motor shafts (typically at the rear end) or reducer high‑speed shafts. It is a high‑torque, compact brake widely used in industrial drive systems for rapid stopping, positioning, and fail‑safe holding.
Basic Identification
Model: DJPZ‑850 (part of the DJPZ series: 02–2000 Nm)
Type: Electromagnetic disc brake (motor‑mounted)
Rated braking torque: 850 Nm
Power supply: AC 220 V / 380 V (50 Hz, rectified to DC for coil)
Insulation class: B
Compliance: ISO 9001, ISO 14001, OHSAS 18001; EX/MA (explosion‑proof/mining optional)
Working Principle (Fail‑Safe Normally‑Closed)
Braking (power off): Heavy‑duty compression springs clamp the armature plate against the brake disc, creating friction to stop/hold the shaft.
Release (power on): The electromagnetic coil is energized, generating magnetic force to pull the armature plate away from the disc, freeing the shaft for rotation.
Manual release: Built‑in manual release lever for emergency disengagement during power failure.
Wear compensation: Automatic air‑gap adjustment maintains consistent braking performance as friction pads wear.
Key Technical Parameters (DJPZ‑850)
表格
| Parameter | Value |
|---|---|
| Rated braking torque | 850 Nm |
| Brake disc diameter | 350 mm |
| Overall dimensions (L×W×H) | 390 mm × 422 mm × 195 mm |
| Mounting bolt | 6‑M16 |
| Coil power | ~18 W |
| Operating frequency | Up to 720 cycles/hour (S3‑60%) |
| Duty cycle | S1‑100% (continuous) / S3‑25%/40%/60% (intermittent) |
| Weight | ~72.4 kg |
| Ambient temperature | −20 °C to +50 °C |
| Relative humidity | ≤ 90% |
| Altitude | ≤ 2000 m |
Core Features
Compact & motor‑integrated: Designed for direct mounting on motor shafts; saves space, easy installation.
Fail‑safe design: Automatically engages on power loss, critical for safety in lifting/hoisting.
Fast response: Near‑instant braking/release for high‑frequency operation.
Manual emergency release: Allows safe disengagement during power outages.
Low noise & high precision: Smooth braking, accurate positioning.
Asbestos‑free friction pads: Eco‑friendly, high wear resistance.
Low maintenance: Self‑lubricating pivots, easy pad replacement.
Corrosion‑resistant: Robust construction for harsh industrial environments.
