10 considerations for selecting a DC magnetic operated shoe brake for crane applications

There are a variety of things to consider when selecting the ideal DC magnetic operated shoe brakes. The following a list of considerations that will help:

1. When subjected to vibration and mechanical pounding, double-locking nuts on the pull-rod, and self-locking show clamp screws hold the brake in adjustment and retain the torque setting. 
   
   
2. You should have the choice of bonded or riveted brake shoes to facilitate your maintenance and relining capabilities.  
   
   
3. The design of the brakes should incorporate simple adjustment methods. These include adjustment wedges and sounding pins for quick easy set up and less routine adjustments. 
   
   
4. The rectifier panel should be small for brakes running from AC power. This reduces the required mounting space. 
   
   
5. The brakes should meet AIST/NEMA mounting dimensions with a small footprint. This ensures the ability to retrofit any AIST/NEMA brake with the one that is selected. 
   
   
6. To minimize scoring, cracking, and heat checking, the brake should have ductile iron wheels extending the life of the device. Further wheels should at least meet ASTM 80-55-06.
   
   
7. To minimize failures due to exposure to dust, heat and moisture, select a brake with a stainless steel encapsulated brake coil. 
   
   
8. Further a brake with a single coil design is far more reliable than a more costly and complex dual coil design versions.  
   
   
9. Consider too a brake with a 90◦ contact to the wheel. This design puts more friction material in contact with the brake wheels and reduces wear and heat. 
   
   
10. Finally, consider a brake with as little as 35 parts overall. This reduces spare part inventory while improving overall reliability.