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According to DIN 15435 standard
Continuously adjustable brake spring enclosed in a square tube with torque scale
Self-lubricating bushings mean brakes are easy to service, no greasing necessary
Equal air gap by adjustable lever stops
Up to size 400:
Levers and base plate made of nodular cast iron
From size 500:
Levers and base plate made of welded steel
Different thrusters
Aluminum brake shoes acc. DIN 15435 Bl. 2 with non-asbestos, organic linings
Shoe clamping springs which prevent brake shoes from tilting when released
Pins and main spindle of stainless steel
Uncoated parts and screws of stainless steel
link:http://www.jingucranebrake.com
EDB drum brake