Product

Features

One Way Clutches Roller Type mainly used as Overrunning and Indexing clutches,
Overrunning clutches:The freewheel disengages automatically when the driven member

rotates faster than the driving member.
Indexing clutch:The freewheel allows the conversion of reciprocating motion into a

discontinuous rotational movement.

Series

Introduction

Types GFR, GFRN are roller type freewheels. They are bearing supported, using two

160.. series bearings, and require oil lubrication. These units may be used in designs

providing oil lubrication and sealing as on the example overleaf. The bearings must

not be axially stressed. Typically, types GFR, GFRN are used with the F series covers

that are designed to transmit torque, and provide oil lubrication and sealing.

Usually these covers are used in pairs according to combinations shown on the following

pages. The outer race of the GFR model is plain to receive and center any component

bored to H7 tolerance. Torque is transmitted by bolts through the cover plate in this case.

Types GFR, GFRN are identical except that type GFRN has a keyway on the outside

diameter to transmit the torque. Two paper seals are delivered with each unit to be

placed between the outer race and cover plates.

Series

Model No.

GFR12 GFR15 GFR20 GFR25 GFR30 GFR35 GFR40 GFR45 GFR50 GFR55 GFR60

GFR70 GFR80 GFR90 GFR100 GFR130 GFR150
GFRN12 GFRN15 GFRN20 GFRN25 GFRN30 GFRN35 GFRN40 GFRN45 GFRN50

GFRN55 GFRN60 GFRN70 GFRN80 GFRN90 GFRN100 GFRN130 GFRN150

Reducers , Flender Gearbox ,SEW Gearbox;
Overrunning clutch:for multiple-machine drives or to separate the inertia of masses of a

driven machine from the driving
machine after it has been switched off.
Indexing clutch:which turns a shaft step by step, thus achieving indexed material feed

or a variable speed.
Backstop clutch:to prevent a machine shaft turning backwards. In this case the

overrunning clutch acts as a brake.