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
1 

Part Number

Description 

Bore Size 

Coupling Size

Keyway Size

Length thru Bore

Overall Coupling Length

Nominal Torque

Max Speed

68514458078 N/A MOL16-HUB-1/4-NKW N/A 1/4 in N/A MOL16 N/A No Keyway N/A 0.276 in7.00 mm N/A 0.709 in18.00 mm N/A 6.20 in·lb N/A 2400.00 rpm
68514458076 N/A MOL16-HUB-1/8-NKW N/A 1/8 in N/A MOL16 N/A No Keyway N/A 0.276 in7.00 mm N/A 0.709 in18.00 mm N/A 6.20 in·lb N/A 2400.00 rpm
68514458077 N/A MOL16-HUB-3/16-NKW N/A 3/16 in N/A MOL16 N/A No Keyway N/A 0.276 in7.00 mm N/A 0.709 in18.00 mm N/A 6.20 in·lb N/A 2400.00 rpm
68514458089 N/A MOL20-HUB-1/4-NKW N/A 1/7 in N/A MOL20 N/A No Keyway N/A 0.354 in9.00 mm N/A 0.906 in23.00 mm N/A 10.60 in·lb N/A 1900.00 rpm
68514458605 N/A MOL20-HUB-1/8-NKW N/A 1/8 in N/A MOL20 N/A No Keyway N/A 0.354 in9.00 mm N/A 0.906 in23.00 mm N/A 10.60 in·lb N/A 1900.00 rpm
68514458088 N/A MOL20-HUB-3/16-NKW N/A 3/16 in N/A MOL20 N/A No Keyway N/A 0.354 in9.00 mm N/A 0.906 in23.00 mm N/A 10.60 in·lb N/A 1900.00 rpm
68514458090 N/A MOL20-HUB-5/16-NKW N/A 5/16 in N/A MOL20 N/A No Keyway N/A 0.354 in9.00 mm N/A 0.906 in23.00 mm N/A 10.60 in·lb N/A 1900.00 rpm
68514458100 N/A MOL25-HUB-1/4-NKW N/A 1/4 in N/A MOL25 N/A No Keyway N/A 0.433 in11.00 mm N/A 1.102 in28.00 mm N/A 17.70 in·lb N/A 1500.00 rpm
68514458612 N/A MOL25-HUB-3/16-NKW N/A 3/16 in N/A MOL25 N/A No Keyway N/A 0.433 in11.00 mm N/A 1.102 in28.00 mm N/A 17.70 in·lb N/A 1500.00 rpm
68514458102 N/A MOL25-HUB-3/8-NKW N/A 3/8 in N/A MOL25 N/A No Keyway N/A 0.433 in11.00 mm N/A 1.102 in28.00 mm N/A 17.70 in·lb N/A 1500.00 rpm
68514458101 N/A MOL25-HUB-5/16-NKW N/A 5/16 in N/A MOL25 N/A No Keyway N/A 0.433 in11.00 mm N/A 1.102 in28.00 mm N/A 17.70 in·lb N/A 1500.00 rpm
68514458113 N/A MOL32-HUB-1/2-NKW N/A 1/2 in N/A MOL32 N/A No Keyway N/A 0.512 in13.00 mm N/A 1.299 in33.00 mm N/A 39.80 in·lb N/A 1200.00 rpm
68514458111 N/A MOL32-HUB-3/8-NKW N/A 3/8 in N/A MOL32 N/A No Keyway N/A 0.512 in13.00 mm N/A 1.299 in33.00 mm N/A 39.80 in·lb N/A 1200.00 rpm
68514458112 N/A MOL32-HUB-7/16-NKW N/A 7/16 in N/A MOL32 N/A No Keyway N/A 0.512 in13.00 mm N/A 1.299 in33.00 mm N/A 39.80 in·lb N/A 1200.00 rpm
Unit of Measure
1