... more than 400 millimeter, stamped steel cage is used 2 Bearing Part NO. 6000, 6200, 6300, 6400, 6800, 6900, 16000, ... . 4 Material: Chrome steel, Carbon steel, stainless steel and ceramic bearing. 5 Special bearings and Nonstandard bearings according to customers' drawings ... & samples. 6 Shield/closure: Open ball bearing, Z, ZZ, RS, 2RS, 2RZ 7 Tolerance Code: ABEC-1 ...