FXN51-25/85 Internal Freewheels Overrunning Bearing FXN Series

FXN51-25/85 Internal Freewheels Overrunning Clutch Bearing

Production introduction

Feature

Internal Freewheels FXN are sprag freewheels without bearing support and with sprag lift-off X. The sprag lift-off X ensures a wear-free free - wheeling operation when the inner ring rotates at high speed. The outer ring is pressed into the customer hous ing. This makes compact, space-saving fitting solutions possible. The freewheels FXN are used as:

Backstops

Overrunning Clutches

for applications with high speed freewheeling operation and when used as an overrunning clutch with low speed driving operation. Nominal torques up to 20 500 Nm. The torque is transmitted on the outer ring by press fit. Bores up to 130 mm. Many standard bores are available.

The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.

The theoretical nominal torque applies only for ideal concentricity between the inner and outer ring. In practice, the concentricity is affected by the bearing play and centering errors of the neigh bouring parts. Then the nominal torques specified in the table apply, whilst taking into consideration the existing run out (T.I.R.).

Higher speeds upon request.

Internal Freewheel FXN 38 - 17/70 NX as a backstop, arranged in a housing adapter to attach to an electric motor. The thin outer ring that is pressed into the housing enables a space-efficient fitting solution. Due to the high shaft speeds in normal operation (freewheeling o peration), the sprag lift-off X ensures a contactless and hence wear-free continuous operation.

Products Parameters