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BS_Einleitung_964x550_2

Sprag Type Freewheel Clutches

Based on its many years of experience in the development and production of high-quality machine components, GMN has chosen to specialize in the production of efficient, long-life sprag type freewheel clutches.

We emphasize on maximum precision in the development and production of GMN sprag type freewheel clutches. This ensures their certification to international standards and produces consistent, outstanding quality characteristics with respect to torque handling, indexing reliability and long service life.

The standardized model series offer a large selection of feature options to furnish effective freewheel clutch solutions for almost any field of application.

 

Benefits for our customers:

  • Maximum torque handling in the smallest space
  • Extremely high indexing frequencies
  • High indexing accuracy and reliability
  • Minimum indexing delay due to small twisting angle
  • Minimum mass moment of inertia
  • Extremely small size
  • Homogeneous load distribution independent of the positional angle of individual sprags

Function

The functional principle of sprag type freewheel clutches is based on static friction. A certain number of sprags are in constant friction contact with the connecting parts. Sprags are components with variable height. They are uprighted when the connecting parts are rotated and clamped between the connecting parts while there is static friction between sprags and connecting parts. The static friction is guaranteed by a specific geometry (clamping angle) of the sprags to the connecting parts.

Applications

GMN sprag type freewheel clutches can be used as indexing clutches, backstops or as overrunning clutches.

GMN sprag type freewheel clutches in use

Our compact freewheel clutch solutions are not only extremely powerful, but also highly robust. These properties are particularly useful where the material is regularly subjected to high levels of stress. Take the motor shaft of a helicopter, shown here as an example.

Click on the video to play.

Series

GMN sprag type freewheel clutches are extremely space-saving and offer outstanding torque, indexing reliability/frequency and service life.

Complete freewheel clutch units

FPD
fpd_Portfolio_5_a
FND
fnd_Portfolio_5
RA
ra_Portfolio_5
FP
fp_Portfolio_5
FN
fn_Portfolio_5

Ball bearing freewheel clutch units

FK
fk_Portfolio_2
FKN
fkn_Portfolio_2
FKNN
fknn_Portfolio_2

Freewheel clutch insert elements with rings

FR
fr_Portfolio_2
FRN
frn_Portfolio_2

Freewheel clutch insert elements

FE 400 Z
fe400z_Portfolio_2
FE 400 M
fe400m_Portfolio_2
FE 400 Z2
fe400z2_Portfolio_2
FE 8000 Z
fe8000z_Portfolio_3

Engineering

How is the torque of GMN sprag type freewheel clutches determined? What needs to be kept in mind during installation? Find out more.

Components

The sprags in GMN freewheel clutches are distinguished by their compact size and high form accuracy.

Freewheel clutch service

We place great importance on long-term customer relationships and customer satisfaction. Close cooperation with our customers and active customer support and advice is a matter of course for us. Among other things, we offer our customers a free service life calculation service for indexing applications.