Product Guide for Eaton Airflex Constricting Drum Type Clutches & Brakes

Type CB

BrakeTechnique®, Inc. Products
Torque capacities up to:
1,160,000 lb-in
131.000 N-m

Airflex CB element assemblies are used as both clutches and brakes in general power transmission service. The primary feature of the CB design and construction is the Airflex torsional resilient principle made possible by the transmission of power through the side walls of the flexible neoprene and cord actuating tube. This flexibility also permits minor shaft misalignment.


Type VC

BrakeTechnique®, Inc. Products
Torque capacities up to:
13,877,000 lb-in
1567.000 N-m

Airflex VC element assemblies are designed and built for severe clutching and braking applications on heavy duty equipment. They are unmatched for high starting loads and sustained slippage where heat generated tends to lower efficiency and shorten the operating life of conventional clutches. Their high torque ratings permit use of smaller diameter units which lowers contact velocity on high speed applications. Ventilated construction permits passage of cooling air, to rapidly dissipate heat from the friction shoes. Torque is transmitted from the side plates of the elements through torque bars to the friction shoes.


Type CM

BrakeTechnique®, Inc. Products
Torque capacities up to:
3,236,000 lb-in
365.000 N-m

Airflex CM element assemblies were designed primarily for the marine industry for use on diesel driven reverse-reduction gears. In addition to providing all of the CB element features, their ventilated friction shoes permit clutch slippage at low energy rates during vessel maneuvering, as well as cycling engagements at high energy rates. Rim registering allows triple element assemblies.