NTN 1R12X17X20.5 1R Series Inner Ring, 12 mm ID x 17 mm OD, 20.5 mm OAW, For Use With 7E-HMK1720CT, HMK1720C Machined Race Drawn Cup Needle Roller Bearings, High Carbon Chrome Steel
Many needle roller bearings use the shaft as a raceway surface without the use of an inner ring. However, it is recommended to use the inner rings with the needle roller bearings, when the shaft can neither be heat treated nor ground.
NTN Inner Ring, Series: 1R Series, 12 mm Inside Dia, 17 mm Outside Dia, 20.5 mm Overall Width, For Use With: 7E-HMK1720CT, HMK1720C Machined Race Drawn Cup Needle Roller Bearings, Round Bore, High Carbon Chrome Steel
| Series | : | 1R Series |
| Material | : | High Carbon Chrome Steel |
| Outside Diameter | : | 17 mm |
| Overall Width | : | 20.5 mm |
| Suitable For Use With | : | 7E-HMK1720CT, HMK1720C Machined Race Drawn Cup Needle Roller Bearings |
| Inside Diameter | : | 12 mm |