Torque Limiting Clutch

Product Specifications

Technical details and manufacturing context for Torque Limiting Clutch

Definition

A torque limiting clutch is a critical safety component within torque adjustment mechanisms that prevents mechanical overload by disconnecting or slipping the drive when torque surpasses a predetermined threshold. It serves as a mechanical fuse to protect downstream equipment, shafts, gears, and motors from damage due to jams, sudden stops, or excessive loads. This directory entry covers general-purpose torque limiting clutches used in machinery and equipment manufacturing. The clutch operates through mechanical means such as spring-loaded friction plates, ball-detent mechanisms, or shear pins. When input torque exceeds the preset limit (adjusted via spring tension or pin strength), the clutch slips (in friction types) or shears (in shear-pin types), interrupting torque transmission until the overload condition is resolved and the clutch is reset. Typical applications include conveyors, mixers, pumps, and other rotating equipment where overload protection is required. The product is available with a range of specifications, including rated torque from 10 to 500 N·m, adjustable within ±20% of the rated value, and disengagement accuracy of ±5%. Maximum speed is 3000–6000 rpm, operating temperature range is -20 to 80 °C, and protection class is IP54–IP65 per IEC 60529. Bore diameter ranges from 10 to 60 mm, overall length from 60 to 200 mm, and weight from 1.5 to 25 kg. Materials on file include alloy steel, spring steel, bronze/brass for friction surfaces, and hardened steel balls. The material designation 45# (per GB/T 699) is listed as a reference. All values are directory reference ranges and must be confirmed with the legal manufacturer or supplier for the specific model and application. Standards listed are for verification purposes only and do not imply certification or compliance of any specific product.

Working Principle

The torque limiting clutch operates mechanically. In friction types, spring-loaded plates press against each other, transmitting torque up to a set limit. When torque exceeds the limit, the plates slip, breaking the torque path. In ball-detent types, hardened steel balls are held in detents by springs; excess torque forces the balls out, disengaging the drive. Shear-pin types use a pin that shears at a predetermined force, permanently disengaging until the pin is replaced. The trip point is adjusted by changing spring tension or pin strength. After an overload event, friction and ball-detent types can be reset automatically or manually, while shear-pin types require pin replacement.

Common Materials

Alloy Steel, Spring Steel, Bronze/Brass (friction surfaces), Hardened Steel Balls

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Torque	10–500 N·m	Adjustable within range
Torque Adjustment Range	±20 %	Relative to rated torque
Disengagement Accuracy	±5 %	Repeatability of trip torque
Max Speed	3000–6000 rpm	Limited by centrifugal force
Operating Temperature	-20–80 °C	Seal and grease limits
Protection Class	IP54–IP65	Dust and splash proofIEC 60529
Bore Diameter	10–60 mm	Keyway or spline available
Overall Length	60–200 mm	Varies with size
Weight	1.5–25 kg	Depends on size and material
Material	45#	Steel; surface hardenedGB/T 699

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Drive Hub
Connects to input shaft and transmits torque to friction elements

Material: Alloy Steel
Friction Plates/Discs Part
Provide controlled slippage when torque limit is exceeded

Material: Sintered Bronze/Steel Composite
Spring Assembly
Applies preset pressure to maintain engagement below torque limit

Material: Spring Steel
Housing/Casing Part
Encloses and protects internal components, provides mounting points

Material: Cast Iron or Aluminum Alloy
Ball and Detent Set Optional
Balls held in detents by springs; excess torque pushes them out and the drive disengages with a click.
Shear Pin Optional
Shears at a set force and stays disengaged until replaced — the cheapest, most definite version.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Torque Adjustment Mechanism

View system integration details

Manufacturers of Torque Limiting Clutch

Manufacturer profiles associated with Torque Limiting Clutch.

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Frequently Asked Questions

What is the primary function of a torque limiting clutch?

It protects machinery from damage by disengaging or slipping when torque exceeds a preset limit, acting as a mechanical fuse.

How is the torque limit adjusted?

The limit is set by adjusting spring tension (in friction or ball-detent types) or by selecting a shear pin with the desired strength. Always refer to the manufacturer's instructions.

What happens after an overload trip?

Friction and ball-detent types may reset automatically or manually; shear-pin types require pin replacement. Inspect the clutch for wear or damage before resetting.

Are the listed specifications guaranteed for all models?

No. The values are directory reference ranges. You must verify model-specific values and standards with the legal manufacturer or supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric to 10 bar (typical), higher with sealed designs
speed range:	0-5000 RPM (typical), depends on bearing and lubrication
temperature:	-40°C to 150°C (typical), up to 200°C with special materials
torque range:	0.1 Nm to 5000 Nm (standard), custom designs available

Product Specifications

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