... plastic tube 3.good quality and best price ball bearings mainly take radial load as well as take moderate axial load, ... large size range and various structure.Features : Shield / closure: open ball bearing, Z, ZZ, RS, 2RS,2RZBall bearings snap ring: N, ... groove in outer ring and external snap ring NRIn different radial clearances C5, C4, C3, C2Applications : Typical applications: electric motors ...