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QW200-32 Pneumatic Drum Brake | 320N·m, Ø200mm Wheel, Spring-Set Air-Release, NC Fail-Safe for Explosive & Mining Duty

Aug 24, 2026

Technical Specifications

 

Parameter

Value

Model​

QW200-32

Brake Type​

Normally closed, spring-applied, pneumatic (air) released​

Brake Wheel (Drum) Diameter​

Ø200 mm​

Rated Braking Torque​

320 N·m​

Actuation Medium​

Compressed air, 4–6 bar (standard), max 8 bar​

Air Consumption per Cycle​

~0.15 L (at 6 bar)

Opening Time​

~0.15 s​ (2× faster than hydraulic)

Closing Time​

~0.20 s​

Air Connection​

G1/4" (BSP) or NPT optional

Solenoid Valve​

24V DC / 220V AC optional (mounted remotely)

Protection Class​

IP67 (brake body), IP65 (valve)

Explosion-Proof Option​

Inherently safe (no motor)​ + Ex d solenoid valve available

Friction Lining​

Asbestos-free insert, card-lock type

Lining Wear Limit​

5 mm (visual scale on spring rod)

Clearance Control​

Auto equal-retraction linkage (interlocked)

Ambient Temp.​

-30°C to +50°C​ (pneumatic advantage - no oil freezing)

Standard​

JB/T7331, ISO 13849 reference

Mounting​

Horizontal base, left/right interchangeable

Options​

Solenoid valve (24V/220V), limit switch, manual release, Ex d valve, air filter/regulator combo

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