JAW Couplings

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Description

Jaw couplings are available in the widest range of combinations of internal diameters and keys.

These flexible couplings provide excellent and reliable service in light, medium and heavy electric motor applications and internal combustion power transmissions.

Applications include power transmission to industrial equipment such as pumps, gearboxes, compressors, blowers, mixers, and conveyors. Jaw couplings come in 24 different sizes, from a minimum torque of 0.4 Nm to a maximum torque of 19,209 Nm, and a variety of inside diameters from 0.125 in. (4.45 mm) to 7 in. (178 mm). The standard bore program includes DIN bore/key combinations.

Jaw couplings typically consist of two hubs (available in sintered metal, aluminum, bronze, steel, stainless steel, and ductile iron) and an elastomeric element, known as a star (available in materials such as NBR SOX rubber, urethane, Hytrel®, and bronze).

Types and characteristics of JAW couplings

Noteworthy characteristics
  • Fail-safe: will continue to function even if the elastomer fails
  • No metal-to-metal contact
  • Oil resistance
  • Dirt resistance
  • Sand resistance
  • Moisture resistant
  • Grease resistant
  • No lubrication required
  • Over 850,000 combinations of inner diameter sizes
  • Most models available from stock

Type L – Standard Jaw Couplings
  • The industry standard shaft coupling
  • Maximum inner diameter: 2.875 inches (73 mm)
  • Maximum torque: 1412 Nm

Type AL – Aluminum Jaw Couplings
  • Lightweight aluminum version of the standard shaft coupling
  • Corrosion resistant (inner diameters with passivated finish for added protection)
  • Maximum inner diameter: 1.875 inches (48 mm)
  • Maximum torque: 256 Nm

Type SS – Stainless Steel Jaw Couplings
  • Stainless steel version of the industry standard shaft coupling
  • Compatible with L and AL hub lines (except AL150 model)
  • Maximum inner diameter: 1.875 inches (48 mm)
  • Maximum rated torque: 419 Nm

Type RRS/RRSC – Radially Removable Spacer Coupling
  • Coupling with detachable center for adequate separation
  • Radially removable elastomers (easy installation and maintenance)
  • Shaft separations for US and European standard pumps/motors
  • Separator in fiberglass-reinforced plastic, cast iron, or aluminum

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