The ZWZA500 - 2500B - 20%CP, a DC electromagnetic drum brake, boasts outstanding features in adjustment and maintenance, structural durability, and operational stability, which can well meet the demands of heavy - duty industrial scenarios. The main features are detailed as follows:
Easy Adjustment and Convenient Maintenance
Equalized Clearance without Frequent Adjustment: It is equipped with an interlocking backlash equalizing device. This device can keep the retraction distance of the two brake shoes consistent all the time during the operation of the brake. It avoids the situation that the brake lining on one side sticks to the brake drum due to uneven retraction, and there is no need for frequent manual adjustment, which reduces the daily debugging workload.
Hassle - free Brake Lining Replacement: The brake lining adopts a card - mounted integral forming structure. When the lining is worn due to long - term friction, it can be replaced quickly and directly without disassembling the entire brake assembly. Moreover, users can select semi - metallic (asbestos - free) hard, semi - hard or soft brake linings based on different working condition requirements such as friction intensity and working environment.
Intuitive Braking Torque Reading: The brake spring is arranged inside the square tube, and the square tube is equipped with a scale. Through this scale, users can directly read the braking torque value of the brake. This eliminates the need for complex measurement and calculation steps, making it convenient to check the braking performance of the equipment at any time.
Durable and Protective Structural Design
Effective Spring Protection: The compression spring, a key component of the brake, is installed in a closed square tube. This enclosed structure can effectively isolate external dust, water droplets, and other pollutants, and also prevent the spring from being impacted by external mechanical forces. It avoids damage or performance degradation of the spring, thus extending the service life of the spring and the overall brake.
Maintenance - free Hinge Points: The main hinge points of the brake are equipped with self - lubricating bearings. These bearings can maintain good transmission efficiency without regular manual lubrication. They not only save the time and cost of regular maintenance, but also ensure that the brake will not have poor braking performance due to insufficient lubrication during long - term intermittent operation, enhancing the durability of the brake.
Stable and Reliable Operational Performance
Adaptable to Intermittent High - frequency Operation: The "20%CP" in the model number represents a 20% duty cycle. The brake can operate stably under such intermittent working conditions, and the maximum number of actions per hour can reach 720 times. It can fully adapt to the high - frequency start - stop working rhythm of industrial equipment such as lifting and loading - unloading machinery.
Stable Electromagnetic and Braking Performance: It is equipped with a new type of armature automatic centering device. This device can ensure that the armature and the yoke are always in a good fitting state during the operation of the brake, so that the electromagnetic attraction generated by the electromagnetic coil is kept stable. In addition, the brake can output a stable braking torque of 2500 N·m when braking, which can quickly decelerate and stop the rotating mechanism of the equipment, and firmly hold the load to avoid dangerous phenomena such as load sliding.
Strong Environmental Adaptability: The structural design of the brake enables it to adapt to harsh industrial environments. For example, in metallurgical workshops with large dust and port terminals with high humidity, it can still maintain stable braking performance, and is not easy to fail due to adverse environmental factors. This ensures the continuous and safe operation of the supporting equipment.
