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 Oldham coupling is a precision engineered, torsionally stiff, three-piece coupling suitable for a great many applications ranging from incremental control of fluid valves to highly dynamic drives in closed loop servo systems. It accommodates misalignment mechanically through a floating disc that engages tenons machined out of the hubs. As the coupling rotates, the floating disc aligns with each hub alternately to an extent demanded by the alignment error. Because parallel misalignment is accommodated by lateral displacement, the Lovejoy Oldham coupling can handle severe alignment errors within a short space envelope. This is a valuable feature in densely packaged and blind assemblies, or where misalignment can accelerate the erosion of shaft bearings. The Lovejoy Oldham coupling features raised dots on both sides of the floating disc which act as an effective spacer.

    The dots keep the face of the tenon from contacting the bottom of the floating disc and allows the coupling greater angular misalignment capability. A very important effect is that the spacer dots will greatly reduce the bending load on the shafts because of the freedom of the floating disc.
    The MOL Coupling consists of two hubs and one center member.
MOL Series - Oldham Clamp Style Coupling Hubs w/o Keyway - Metric
MOL Series - Oldham Set Screw Style Coupling Hubs w/o Keyway - Metric
Unit of Measure
Items MOL Series - Oldham Clamp Style Coupling Hubs w/o Keyway - Metric
68514458079
MOL Series - Oldham Set Screw Style Coupling Hubs - Metric Bores 		MOL Series - Oldham Clamp Style Coupling Hubs w/o Keyway - Metric
68514458080
MOL Series - Oldham Set Screw Style Coupling Hubs - Metric Bores 		MOL Series - Oldham Clamp Style Coupling Hubs w/o Keyway - Metric
68514458081
MOL Series - Oldham Set Screw Style Coupling Hubs - Metric Bores 		MOL Series - Oldham Clamp Style Coupling Hubs w/o Keyway - Metric
68514458082
MOL Series - Oldham Set Screw Style Coupling Hubs - Metric Bores 		MOL Series - Oldham Clamp Style Coupling Hubs w/o Keyway - Metric
68514458604
MOL Series - Oldham Set Screw Style Coupling Hubs - Metric Bores
Description  N/A MOL16-HUB-3MM-NKW N/A MOL16-HUB-4MM-NKW N/A MOL16-HUB-5MM-NKW N/A MOL16-HUB-6MM-NKW N/A MOL20-HUB-3MM-NKW
Bore Size N/A 3.00 mm N/A 4.00 mm N/A 5.00 mm N/A 6.00 mm N/A 3.00 mm
Coupling Type N/A Oldham, Three Piece Design w/ Insert
Coupling Size N/A MOL16 N/A MOL16 N/A MOL16 N/A MOL16 N/A MOL20
Material N/A Aluminum
Set Screw Size N/A M3 N/A M3 N/A M3 N/A M3 N/A M4
Keyway Size N/A No Keyway
Length thru Bore N/A 0.276 in7.00 mm N/A 0.276 in7.00 mm N/A 0.276 in7.00 mm N/A 0.276 in7.00 mm N/A 0.354 in9.00 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
Overall Coupling Length N/A 0.709 in18.00 mm N/A 0.709 in18.00 mm N/A 0.709 in18.00 mm N/A 0.709 in18.00 mm N/A 0.906 in23.00 mm
Color N/A Silver/Metallic
Weight N/A 0.01 oz N/A 0.01 oz N/A 0.01 oz N/A 0.01 oz N/A 0.02 oz
Weight (Complete Coupling w/ Min. Bores) N/A 0.20 oz7.00 g N/A 0.20 oz7.00 g N/A 0.20 oz7.00 g N/A 0.20 oz7.00 g N/A 0.50 oz15.00 g
Max. Operating Temperature N/A 176.00 ºF80.00 ºC
Nominal Torque N/A 6.20 in·lb N/A 6.20 in·lb N/A 6.20 in·lb N/A 6.20 in·lb N/A 10.60 in·lb
Min. Bore (Dimensions ID1/ID2) N/A 0.118 in3.00 mm
Max. Bore (Dimensions ID1/ID2) N/A 0.236 in6.00 mm N/A 0.236 in6.00 mm N/A 0.236 in6.00 mm N/A 0.236 in6.00 mm N/A 0.315 in8.00 mm
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
Angular Misalignment N/A 3.00 º
Parallel Misalignment N/A 0.400 in N/A 0.400 in N/A 0.400 in N/A 0.400 in N/A 0.600 in
Torsional Stiffness N/A 620.00 in·lb/rad N/A 620.00 in·lb/rad N/A 620.00 in·lb/rad N/A 620.00 in·lb/rad N/A 974.00 in·lb/rad
Moment of Inertia N/A 0.001 lb·in² N/A 0.001 lb·in² N/A 0.001 lb·in² N/A 0.001 lb·in² N/A 0.003 lb·in²
Cubic inches N/A 0.10954 in³ N/A 0.10954 in³ N/A 0.10954 in³ N/A 0.10954 in³ N/A 0.21926 in³