Pneumatic Torque Limiters

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Housing Type

About our Pneumatic Torque Limiters

Nexen’s pneumatically engaged, single-position torque limiters are the highest quality and most efficient overload protection devices for industrial machinery on the market today.

Pneumatic Torque Limiters protect equipment by immediately disengaging the machine shaft when excessive torque or a machine jam occurs. Each unit comes with a Turck® Proximity Sensor to detect torque overloads. 

The Advantage of Air
Pneumatic actuation allows remote torque adjustment while the machine is running, eliminating continuous trips to make adjustments.

Mounting Options
Nexen's bearing-supported pilot Pneumatic Torque Limiters accept numerous mounting configurations, including sprockets, timing belt pulleys, and HTD sprockets. 

Nexen's single-flex or double-flex couplings match the drive flange pilot surface and bolt circles. These couplings provide high shaft misalignment protection, zero backlash, and excellent torsional rigidity. These couplings connect companion shafts inline and provide misalignment protection for the Torque Limiter drive flange bearings.

Turck Proximity Sensors
The mounting configuration of the Turck Sensor allows full gear reducer shaft insertion into the bore for inline shaft coupling installations, ensuring proper torque transmission and easy mounting. The 24VDC proximity switch is easy to set up and works with PLC controls.

Smart Controllers
Smart Valve Controllers are available that accept feedback from the engagement sensor to control air to one or multiple torque limiters. Controllers are available with optional higher, timed-out start-up torque settings. 

Totally Enclosed Models
Nexen, totally enclosed nickel-plated models, keep contaminants out of critical areas and have all the same features as the standard units. Totally Enclosed Models can be used in wash-down environments and other areas where liquids may be present.

Pneumatic Torque Limiters

Open OPEN or Closed ENCLOSED

 

TL

 Sizes Available  10, 15, 20, 20, 40, 50, 60, 70, 80
 Function  Air pressure is adjusted to provide the required setting of disengagement torque.
 Maximum Disengagement Torque  Up to 3,130 Nm [27,703 in-lb]
 Min Disengagement Torque   As Low as 2.8 Nm [25 in-lb]
 Number Of Engagement Positions   1 @ 360°, 2 @ 180°, 4 @ 90°, 5 @ 72°, 6 @ 60°, 8 @ 45° Units Available
 Mounting  Shaft Mount
 Hub Bore St  Keyed Female Through Bore with Optional Clamp Collar Feature
 Available Bore Size Range  12 to 75 mm [.500 to 2.938 in]
 Output Style (Drive Arrangement)   Pilot, Sprocket, V-Belt or Timing Belt Pulley
 Operating Mode Sensor The disengagement sensor is standard on most units. When the disengagement torque setting is exceeded, the sensor signals an air valve to cut off air to the unit.
Finishes

Black Oxide or Nickel Plated

Housing

Open or Enclosed Units Available

Maximum RPM

Up To 2,000 RPM on Open Units
Up To 1,800 RPM on Enclosed Units

Required Components and Accessories for our Pneumatic Torque Limiters

Listed below are some of the Required Components and Accessories for Pneumatic Torque Limiters. Use the filters above to find the complete list of Required Components and Accessories on the product page.

Required Components

  • TL Torque Limiter Control Kit

Accessories

  • Conversion Kits Limit Switch
  • Coupling Adapters
  • Filters
  • Lubricator
  • Regulators

Applications

Nexen's Pneumatic Torque Limiters are designed for applications that require:

  • Disconnecting
  • Overload Protection
  • Positioning
  • Positive Drive
  • Connect/disconnect

  • Controlled acceleration

  • Cycling/indexing

  • Inching/jogging

  • Soft Starts

More Information

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Note: The technical data on this website is subject to change without notice. Please contact Nexen for help with your application, appropriate sizing, and configuration.