Torque Limiting Couplings

Torque Limiting Couplings Eaton's Airflex TLC products are designed to withstand high torque spikes found in heavy duty variable frequency drive applications. By increasing torque by 25% and providing an automatic slip detection system, the Airflex TLC decreases maintenance costs and downtime through automatic reset and re-engage, automatic wear compensation, safeguarding of expensive driveline components by utilizing an electronic slip detection system and easy torque adjustments during operation. The Airflex TLC is a superior alternative to traditional mechanical TLCs due to the ease of operation and the electronic and automatic protection of the driveline.

Common applications include grinding mills and large Variable Frequency Drive (VFD) applications.

Addresses these engineering challenges:

  • Long history of driveline safety; proven technology
  • Net Cost Reduction due to the ability to downsize
  • Allows instantaneous and automatic disconnect from the motors and driveline components in an overload situation
  • Minimal torsional and vibration transmission due to “soft” driving friction interface
  • No periodic adjustments, lubrication, calibration or other preventative maintenance is required

Product Features

  • Design based on the traditional Airflex “VC” style drum clutch
  • Overload or “slip torque” is easily adjustable by varying the applied air pressure
  • Adjustable Slip Detection Control detects overload conditions while in operation
  • Reset is instantaneous and automatic by re-applying the predetermined air pressure
  • Torque settings constant throughout the service life with no manual adjustments; wear compensation is automatic

Technical Information

Featured Literature

Eaton Torque Limiting Couplings

Eaton Torque Limiting Couplings
Eaton, a world leader in clutch-based drive trains for grinding mills, introduces an advanced solution: Airflex Torque Limiting Couplings (TLC). This easy-to-use solution helps prevent damage to critical, high-value driveline components due to system overloads. Learn more in this brochure.
TLC Slip Detect Control Panel
Technical Guides:

TLC Slip Detect Control Panel
CP3130 Grinding Mill Torque Limiting Control installation, operation and maintenance manual: Throughout this manual there are a number of HAZARD WARNINGS that must be read and adhered to in order to prevent possible personal injury and/or damage to equipment.

Eaton Torque Limiting Coupling Installation, Operation and Maintenance Manual Airflex® Product Line
TLC 5004 - Installation, Operation and Maintenance Manual: Forward this manual to the person responsible for Installation, Operation and Maintenance of the product described herein. Without access to this information, faulty Installation, Operation or Maintenance may result in personal injury or equipment damage.


Eaton Torque Limiting Coupling overview
Five things you need to know about Eaton Airflex Torque Limiting Couplings in five minutes (or less!)
This presentation will provide an overview on the Eaton Torque Limiting Coupling.  You will be introduced to this product, understand where it’s best used, how it works and what differentiates Eaton’s torque limiting couplings.


April 2016
Eaton Airflex Torque Limiting Couplings: Decrease Maintenance Costs and Downtime for Mineral Processing Plants from Power Transmission Engineering

Eaton’s New Airflex Torque Limiting Couplings Help Decrease Maintenance Costs and Downtime

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