Bearing metal frame, body, parts of the brake linkage, cover of the body, the hatch covers are made of low-alloyed steel according to GOST 19281-89 14 category, the strength class of which is not less than 390.
12.
Westinghouse claims that Cupaloy has the same strength as steel, yet will resist most corrosion over thousands of years because it becomes an anode in electrolytic reactions, receiving deposits instead of wasting away like most iron-bearing metals.
13.
It provides a protective barrier for the bearing metal from the environment, but has disadvantages that this grease must be replaced periodically, and maximum load of bearing decreases ( because if bearing gets too warm, grease melts and runs out of bearing ).
14.
The expression a " run bearing " also derives from this style of bearing, since failure of lubrication will lead to heat build up due to friction in the bearing, eventually leading to the bearing metal liquefying and running out of the pillow block.
