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APPLICATION

●ZWZA, ZWZB Series DC electromagnetic drum brakes can be extensively used for deceleration and stopping of electromagnetic lifter and various lift, belt transport, port handling, metallurgical and building machinery using DC drive or DC net.

And not suitable for machines using AC drive.

STANDARDS COMPLIANT

●The dimensions and braking torque parameters of ZWZA series brakes comply with JB/ZQ4386- 86 standard, technology requirements comply with JB/T7685-2006 standard;

This series brakes is mainly used for taking replace of old products of ZWZ series.

●The dimensions and braking torque parameters of ZWZB series brakes comply with GB 6334-86 standard, technology requirements comply with JB/T7685-2006 standard;

This series brakes is mainly used for taking replace of old products of ZWZ3、ZWZ3A series.

MAIN FEATURE

●Interlocking shoe clearance balancing device and shoe auto-aligning device constantly equalize the clearance of brake shoes on both sides and make adjustment unnecessary, completely avoiding brake lining one side sticking to brake wheel.

●Main hinge points are equipped with sell-lubricating bearing, making high efficiency of transmission, long service life,

Lubricating is unnecessary during operation.

●Enclosed spring tube protects spring from damage and contamination.

●New type armature iron auto-aligning device which can keep armature iron and magnetic yoke jointing well all the time.

●Brake lining is of card-mounted and entirely-shaped structure, which is easy and quick to replace.

Brake lining of various materials such as semi-metal(non-asbestos)hard and half-hard, soft (non- asbestos) substance are available for customer to choose.

●Brake closes in case of power failure (Fail- Safe Principle). Braking by spring power. Electromagnetic release.

OPERATING CONDITION

●Ambient temperature: -20℃ ~ +40℃

●Relative humidity:≤90%

●Voltages: DC 110V, 220V.

●Operating duty: intermittent (S3- -25, 40, 60%.≤720 times per hour) and continuous (S1-100%)

●Working condition: No risk of explosion conditions, gas and electrical angstrom which will corrode metal and damage the insulation.

●Special requirements can be discussed before production.