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  • BRAND:
  • SKU: 1799506
  • MODEL: 68514458052


$16.87 Each


  • Typically ships in: 1 day
  • Weight: 0.1 lb
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  • Free shipping on orders over $20
  • Contiguous U.S. States

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Additional Description

    The Lovejoy Mini Soft coupling provides protection from misalignment, vibration and shock loads. The simple design of the coupling ensures ease of assembly, installation and reliable performance. No special tools are needed for installation or removal. No lubrication is needed, and once installed and aligned correctly, no maintenance is required. The Mini Soft coupling design is comprised of three parts. Two hubs with internal teeth engage an elastomeric flexible center, or sleeve, with external teeth. Misalignment and torsional shock loads are absorbed by shear deflection in the center sleeve element. The shear characteristic of the coupling is very well suited to absorb impact. The Lovejoy Mini Soft coupling is designed with tooth contact which provides more surfaces carrying the load resulting in less wear at any one point, and torque that flows more smoothly. Additionally, the coupling allows for axial freedom which results in easier assembly and spacing of shafts. This feature is particularly useful in reducing thrust loads on bearings. When operating within its rating, the coupling is torsionally stiff and will not react with twist during operation. The Polyurethane center member sleeve is known for its toughness and resistance to abrasion, and also provides for good damping and shock load capabilities. The MSF coupling consists of two hubs and one center member.
Description MSF20 HUB 5MM N/KW
TypeMini Soft, Three Piece Design w/ Sleeve Insert
Coupling SizeMSF20
MaterialZinc Alloy
StyleSet Screw
Weight0.05 oz
Weight (Complete Coupling w/ Min. Bores)1.50 oz43.00 g
Dimensional Data
Bore Size5.00 mm
Set Screw SizeM3
Keyway SizeNo Keyway
Length thru Bore0.394 in10.00 mm
Overall Coupling Length1.339 in34.00 mm
Outside Diameter0.787 in20.00 mm
Min. Bore (Dimensions ID1/ID2)0.197 in5.00 mm
Max. Bore (Dimensions ID1/ID2)0.394 in10.00 mm
Cubic inches0.82934 in³
Performance Data
Normal Temperature Range140.00 ºF
Nominal Torque8.90 in·lb
Max Speed1900.00 rpm
Angular Misalignment2.00 º
Parallel Misalignment0.010 in
Torsional Stiffness80.00 in·lb/rad
Moment of Inertia0.0100 lb·in²
  • Easy blind assembly
  • Good shock load absorption
  • Good abrasion resistance
  • Zinc alloy hubs
  • Polyurethane insert
  • Nominal torque, torsional stiffness, weight and moment of inertia are based on minimum bore size.


OD 0.787 in

Return policy

Item must be unused.

Item must be in it's original package.

Restocking, shipping and handling fees may applied to any return with this manufacturer.

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Product's availability

State of California Proposition 65 Product Warning