Twist-free ground inner rings create optimum running surfaces for sealing lips, especially of rotary shaft seals. Lubricant can be prevented from migrating away from the machine elements or even escaping. Compared to normal inner rings, the abrasion of the sealing lip is also reduced, which enables a significantly longer service life. The twist of inner rings is eliminated by a special grinding process.
Adapter sleeves and withdrawal sleeves are suitable for mounting bearings with a tapered bore onto cylindrical shafts.
Adapter sleeves are ideal for mounting bearings with a tapered bore onto cylindrical shafts. In this setup, the bearing is pressed onto the adapter sleeve until the desired reduction in radial internal clearance is achieved. Adapter sleeves do not require additional retention on the shaft, allowing the bearings to be positioned at any point along shafts with a constant diameter.
When used with a support ring according to DIN 5418 on stepped shafts, adapter sleeves enable precise axial positioning of the bearings and simplify dismounting.
Withdrawal sleeves are suitable where bearings with a tapered bore are located on cylindrical shafts. The tapered sleeve is pressed into the bearing bore until the required reduction in radial internal clearance is achieved. The bearing must be axially supported during this process, for example by means of a shaft shoulder.
Withdrawal sleeves give easier dismounting of the bearings, as the press fit of the bearing can be loosened with the aid of a locknut applied to the withdrawal sleeve.
