revise

ZWZA and ZWZB series DC electromagnetic drum brakes are mainly used for deceleration and parking braking of various mechanisms in electromagnetic cranes, DC drives or DC power grids for lifting, port loading and unloading, and metallurgical machinery.

It is not recommended to use various lifting, port loading and unloading, and metallurgical machinery driven by communication.

main features

• The interlocking distance equalization device and the tile automatic positioning device can always maintain equal distance between the tiles on both sides without adjustment, completely avoiding the phenomenon of one side of the brake pad floating against the brake wheel due to uneven distance;
• The main swing hinge points are equipped with self-lubricating bearings, which have high transmission efficiency, long service life, and do not require lubrication during use;
• The brake spring is arranged inside the square tube and equipped with a ruler to protect the spring from damage and contamination;
• The brake pad is a (with card slot) card mounted integral molding structure, which is very convenient and fast to replace. It is equipped with brake pads of different materials such as semi metal (asbestos free) hard and semi hard, soft (asbestos free), etc. for users to choose from;
• The new type of armature positioning device can always maintain a good fit between the armature and the magnetic yoke;
• Normally closed design, (power-off) spring braking, (powered on) electromagnetic release.

Conditions of Use

• Environmental temperature: -20 ° C to+40 ° C;
• Relative humidity: ≤ 90%;
• Working system: continuous (S1-100%) and intermittent (S3-25%, 40%, 60%, operating frequency ≤ 720c/h) working system;
• Power supply voltage: DC 110V, 220V;
• There are no explosive hazardous media, gases or conductive dust in the surrounding work environment that can corrode metals and damage insulation.

Basic parameters

• Product models: ZWZA □ 400, ZWZA □ 500, ZWZA □ 600, ZWZA □ 700, ZWZA □ 800, ZWZB □ 400/400, ZWZB □ 400/500, ZWZB □ 500/400

ZWZB □ 500/500, ZWZB □ 500/600, ZWZB □ 630/500, ZWZB □ 630/600, ZWZB □ 630/700, ZWZB □ 710/600, ZWZB □ 710/700

ZWZB □ 710/800, ZWZB □ 800/700, ZWZB □ 800/800

• Applicable wheel diameter: 400-800mm
• Braking torque: 450-10000Nm