VRIJLOOPLAGER NFR55 STIEBER

Product description:

• Type NFR is a bearing supported roller type freewheel without any sealing
• Lubrication and sealing must be provided by the installation
• Standard lubrication is oil
• Size 8 to 20 units use steel on steel bearing support from the inner race
• Above size 25, two 160 series ball bearings are used, giving a higher overrunning speed capacity
• A typical arrangement is shown overleaf
• The inner race is keyed to the shaft
• The outer race has a positive n6 tolerance to give a press fit in a housing to H7
• Additional side notches provide for positive torque transmission
• The housing must be strong enough to not expand after assembly