Regal Rexnord
Mechanical Clutches
Regal Rexnord mechanical clutches are purely mechanical(non - electric, non - hydraulic) torque - control devices that engage, disengage, or freewheel based on speed, direction, torque, or a manual control input — the simplest and often most robust solution for overrunning, backstopping, indexing, and safety - disconnect applications.Under the Warner Electric, Stromag, and Rexnord brands, our mechanical clutch portfolio includes overrunning(one - way) clutches using cams, sprags, or rollers that lock in one direction and freewheel in the opposite; centrifugal clutches that engage at a predetermined speed; wrap - spring clutches for rapid single - revolution indexing; and manual clutch couplings for PTO disconnects.Design engineers in agricultural equipment, packaging machinery, conveyor drives, and outdoor power equipment select Regal Rexnord mechanical clutches for their inherent simplicity — no wiring, no hydraulic plumbing, no control system complexity — and their ability to perform critical one - way, disconnect, and overload - protection functions with minimal maintenance.For applications ranging from the overrunning drive on a combine feeder house to the backstop that prevents a loaded bucket elevator from reversing, our mechanical clutches deliver the targeted torque - control functionality with the reliability that comes from mechanical actuation free of external power dependencies.
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Trusted by Industry Leaders
Overrunning Clutches for Backstopping & One - Way Drives
Sprag and roller - ramp designs that instantaneously lock to prevent reverse rotation of inclined conveyors and elevators, while freewheeling in the forward direction — no external control required.
Centrifugal Clutches for Automatic Speed - Dependent Engagement
Shoes that pivot outward at a predetermined speed to engage the output, providing the soft - start and no - load - idle characteristics required by engine - driven compressors, mowers, and pumps.
Wrap - Spring Clutches for Single - Revolution Indexing
The wrap - spring design delivers an immediate, positive engagement for the exact single - cycle indexing required by packaging, labeling, and printing machinery.
Low - Maintenance, No - Power Requirement
Mechanical actuation eliminates the electrical wiring, hydraulic plumbing, and control system cost and complexity of powered clutch alternatives.
Robust Construction for Industrial & Mobile Equipment
Ductile - iron and steel housings with sealed, grease - lubricated elements designed for the dust, moisture, and vibration of agricultural, construction, and industrial environments.
Standard Mounting Flanges & Shaft Configurations
Designed to fit standard motor and gearbox shaft dimensions and mounting patterns, simplifying integration into new and existing machinery.
Overrunning Clutches as Conveyor Backstops: Preventing Catastrophic Reverse Run - Out
A loaded inclined conveyor belt or bucket elevator that loses power and begins to run backwards can cause massive equipment damage and endanger personnel as tons of material cascade into the boot or transfer point.Regal Rexnord overrunning clutches installed on the head shaft or coupled to the gearbox input shaft prevent this by locking instantly against reverse rotation while allowing free forward rotation.Unlike electronic or hydraulic anti - reverse systems that depend on power and controls, a mechanical overrunning clutch requires no external energy and is always engaged in the protective direction.This inherent fail - safe characteristic has made overrunning clutches the standard backstop technology for inclined conveyors in mining, aggregate, and grain - handling applications worldwide.
Mechanical Clutches for Agricultural & Construction PTO Drives
Power take - off(PTO) drives on tractors, balers, forage harvesters, and construction equipment transmit engine power to implements — and they must incorporate an overload - protection and disconnect mechanism to protect both the equipment and the operator.Regal Rexnord mechanical overrunning clutches on PTO shafts allow the implement to overrun the tractor PTO when the engine is declutched, preventing the implement inertia from driving the tractor transmission.Friction and detent - type torque limiters on PTO shafts provide the calibrated overload protection that prevents drive - shaft and gearbox damage when an implement jams on a rock or overloads in a slug of crop material.These straightforward mechanical solutions provide the reliability and service simplicity that are paramount for equipment operating in the field, far from service centers.