The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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    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.
MSF Series - Mini Soft Set Screw Style Coupling Hubs w/o Keyway - Metric
MSF Series - Mini Soft Set Screw Style Coupling Hubs w/o Keyway - Metric-2
Unit of Measure
Items MSF Series - Mini Soft Set Screw Style Coupling Hubs w/o Keyway - Metric
68514458038
MSF Series - Mini Soft Set Screw Style Coupling Hubs - Inch (Imperial) Bores 		MSF Series - Mini Soft Set Screw Style Coupling Hubs w/o Keyway - Metric
68514458039
MSF Series - Mini Soft Set Screw Style Coupling Hubs - Inch (Imperial) Bores 		MSF Series - Mini Soft Set Screw Style Coupling Hubs w/o Keyway - Metric
68514458040
MSF Series - Mini Soft Set Screw Style Coupling Hubs - Inch (Imperial) Bores 		MSF Series - Mini Soft Set Screw Style Coupling Hubs w/o Keyway - Metric
68514458041
MSF Series - Mini Soft Set Screw Style Coupling Hubs - Inch (Imperial) Bores 		MSF Series - Mini Soft Set Screw Style Coupling Hubs w/o Keyway - Metric
68514458048
MSF Series - Mini Soft Set Screw Style Coupling Hubs - Inch (Imperial) Bores
Description  N/A MSF16-HUB-1/8-NKW N/A MSF16-HUB-3/16-NKW N/A MSF16-HUB-1/4-NKW N/A MSF16-HUB-5/16-NKW N/A MSF20-HUB-3/16-NKW
Bore Size  N/A 1/8 in N/A 3/16 in N/A 1/4 in N/A 5/16 in N/A 3/16 in
Type N/A Mini Soft, Three Piece Design w/ Sleeve Insert
Coupling Size N/A MSF16 N/A MSF16 N/A MSF16 N/A MSF16 N/A MSF20
Material N/A Zinc Alloy
Set Screw Size N/A M3
Keyway Size N/A No Keyway
Length thru Bore N/A 0.315 in8.00 mm N/A 0.315 in8.00 mm N/A 0.315 in8.00 mm N/A 0.315 in8.00 mm N/A 0.394 in10.00 mm
Overall Coupling Length N/A 1.063 in27.00 mm N/A 1.063 in27.00 mm N/A 1.063 in27.00 mm N/A 1.063 in27.00 mm N/A 1.339 in34.00 mm
Style N/A Set Screw
Outside Diameter N/A 0.63 in16.00 mm N/A 0.63 in16.00 mm N/A 0.63 in16.00 mm N/A 0.63 in16.00 mm N/A 0.787 in20.00 mm
Color N/A Black
Min. Bore (Dimensions ID1/ID2) N/A 0.118 in3.00 mm N/A 0.118 in3.00 mm N/A 0.118 in3.00 mm N/A 0.118 in3.00 mm N/A 0.197 in5.00 mm
Max. Bore (Dimensions ID1/ID2) N/A 0.315 in8.00 mm N/A 0.315 in8.00 mm N/A 0.315 in8.00 mm N/A 0.315 in8.00 mm N/A 0.394 in10.00 mm
Cubic inches N/A 0.42190 in³ N/A 0.42190 in³ N/A 0.42190 in³ N/A 0.42190 in³ N/A 0.82934 in³
Normal Temperature Range N/A 140.00 ºF
Nominal Torque N/A 4.40 in·lb N/A 4.40 in·lb N/A 4.40 in·lb N/A 4.40 in·lb N/A 8.90 in·lb
Max Speed N/A 2400.00 rpm N/A 2400.00 rpm N/A 2400.00 rpm N/A 2400.00 rpm N/A 1900.00 rpm
Max. Angular Misalignment N/A 2.00 º
Max. Parallel Misalignment N/A 0.010 in
Torsional Stiffness x 106 N/A 27.00 in·lb/rad N/A 27.00 in·lb/rad N/A 27.00 in·lb/rad N/A 27.00 in·lb/rad N/A 80.00 in·lb/rad
Moment of Inertia N/A 0.0030 lb·in² N/A 0.0030 lb·in² N/A 0.0030 lb·in² N/A 0.0030 lb·in² N/A 0.0100 lb·in²
Weight N/A 0.03 oz N/A 0.03 oz N/A 0.03 oz N/A 0.03 oz N/A 0.05 oz
Weight (Complete Coupling w/ Min. Bores) N/A 0.80 oz N/A 0.80 oz N/A 0.80 oz N/A 0.80 oz N/A 1.50 oz