Loader Pin Shaft Bushing

Loader Bucket, loader arm, rocker arm, Loader Linkage Rod cylinder, need to be connected by the loader pin shaft, in order to reduce wear, hole installation bushing, pin shaft material is the best choice of 42CrMo, consider the price of 45 steel, both choose 40Cr, do conditioning treatment HB250 to 300 is ok, of course, about 300 strength is better, Machining is more difficult. If the shaft surface is to withstand some wear resistance, it must be medium frequency surface hardening or hard chrome plating. My company for many heavy industry enterprises supporting excavator pin shaft, diameter is 50-135mm, each company designated material is also different, roughly 45 steel, 40Cr steel and 42CrMo. 42CrMo is used for important parts with large bearing capacity.