... . Keeper: stainless steel, PTFE, nylon9. Bearing ferrule and ball hardness: 59 - 63HRCExplanation:Z represents that one-side of ... are available in many executions and sizes.Deep groove ball bearing have various types in structure, beside open ... of B/LApplicationAuto, tractor ,machine tool, electric machine, water pump, agricultural machinery and textile machineryPackageIndusitrial package or according ...