nexen TORQUE LIMITERS
Torque limiters are pneumatic overload devices designed to instantly disengage at a pre-set torque level. The torque output is easily changed by adjusting the air pressure setting. The single position design assures re-engagement of the drive, from a complete stop, in the same position every time, thus providing exact timing of both components.
A limit Switch Assembly senses electrical problems and interrupts power prior to damage occurring. Torque limiters are available in either Open or Enclosed designs in two mounting styles - Set Collar and Set Screw. Single or Double Flex Coupling Adapters can be added for vibration and shock protection, and in-line coupling applications.
Air Pressure Control Systems are available in 2 styles to provide remote adjustment of torque settings. There are 30 Imperial Models and 9 Metric Models to choose from, each with a wide range of bore sizes and operating specifications.
When a preset torque level is exceeded, the driven components are disengaged via a ball ramping out of its detent. The resultant axial movement to the piston triggers a microswitch. This can be programmed to release air to the Torque Limiter and set off a warning alarm to the operator.
Applications
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Positioning
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Overload Protection
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Disconnecting
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Positive Drive
Features/Benefits
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Single-position, ball-detent interface for same-position re-engagement
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Variable torque levels achieved remotely with air pressure regulator
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Air engaged/spring released with open and closed units available
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Set screw or collet shaft mounting or pilot mounting for sprockets or pulleys
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Optional coupling adapters for vibrations/shock or in-line applications
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Bore range: 5/8 to 2 15/16 inches [Imperial and metric sizes available]
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Nickel plated exterior meets USDA and NEMA standards
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Corrosion resistant design ideal for food and chemical processing
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Available for torque up to 3390 Nm [30,000 in-lb]
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Overload Protection System electronically detects torque overloads
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OPS disengages clutch and sends signal to external signaling devices.
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OPS can reengage at any speed with the push of a button
nexen > overload protection devices