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Lovejoy 99920 Size SXC185-6 Close Coupled Industrial Coupling Hub, Inch, 2.3765" Bore, 7.28" Coupling OD, 6.44" Overall Coupling Length, 4200 Maximum Unbalanced RPM, 29200 in-lbs Nominal Torque, 0.625" x 0.313" Keyway with 2 Setscrew

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Product Specifications
Part Number
Bore Depth
3.15  inches
Bore Diameter
2.3765  inches
Overall Length
6.44  inches
Angular Misalignment
1.5  Degrees
Max Rotational Speed
58400  RPM
Flange Diameter
7.28  inches
Hub Diameter
3.74  inches
Key Way Width
0.625  inches
Number of Items
Outside Diameter
7.28  inches
29200  Inch Pounds
Trade Size
Specification for this product family (See all  products)
Brand Name
System of Measurement

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Key Features

  • Hub for use with SXC-type disc coupler assembly (not included)
  • Torsionally rigid without backlash
  • Accommodates angular, axial, and parallel misalignment
  • Rotational speeds up to 9,100 rpm without special balancing
  • Interference fit and key way for secure attachment to shaft

Product Description

Flexible couplings are used to link two rotating shafts that are not aligned in order to transmit the rotational power, known as torque, from one shaft to the other. Most flexible couplings consist of two hubs and a middle assembly; each hub attaches to a shaft while the middle assembly flexes between the hubs to accommodate the misalignment of the two shafts. Shaft misalignments are generally either parallel or angular and cause complications to transmitting rotational power from one shaft to another in the form of stresses, loads, vibrations, and other forces, which vary from one type of misalignment to another. Flexible couplings are used in a broad range of applications, such as in motor vehicles, conveyors, escalators, agricultural, forestry and mining equipment, aeronautics, robotics and space exploration, among others.

Lovejoy manufactures flexible couplings, universal joints, variable speed drives, and other transmission and mechanical power products. The company, founded in 1900, is headquartered in Downers Grove, IL.

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