Shaanxi Rongle Petroleum Machinery Co.,Ltd is one of the best China brake shoe manufacturers and suppliers,Website:://.snrle.com, and also a professional company and factory, welcome to import quality brake shoe products from us.     The brake shoe is used on oilfield drilling rig, workover rig , tractor hoist and other mechanical equipments .The material is new style non-asbestos , semimetal composite material .The advantage of this material is that non-pollution , excellent performance , and parameter index up to oil and gas industry standards SY/T5023-94.Our factory can produce many kinds of brake shoe of clutch.Technical parametersnormal temperature friction coefficient 0.42 Thermal coefficient of friction 0.36ballistic work 0.5J/cm²wear rate 0.66×10-7mm/N.m