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.
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Item #

Description 

Bore Size

Coupling Size

Keyway Size

Length thru Bore

Overall Coupling Length

Nominal Torque

Max Speed

N/A MOL16 HUB 3MM N/KW N/A 3.00 mm 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
N/A MOL16 HUB 4MM N/KW N/A 4.00 mm 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
N/A MOL16 HUB 5MM N/KW N/A 5.00 mm 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
N/A MOL16 HUB 6MM N/KW N/A 6.00 mm 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
N/A MOL20 HUB 3MM N/KW N/A 3.00 mm 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
N/A MOL20 HUB 4MM N/KW N/A 4.00 mm 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
N/A MOL20 HUB 5MM N/KW N/A 5.00 mm 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
N/A MOL20 HUB 6MM N/KW N/A 6.00 mm 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
N/A MOL20 HUB 8MM N/KW N/A 8.00 mm 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
N/A MOL25 HUB 5MM N/KW N/A 5.00 mm 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
N/A MOL25 HUB 6MM N/KW N/A 6.00 mm 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
N/A MOL25 HUB 8MM N/KW N/A 8.00 mm 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
N/A MOL25 HUB 10MM N/KW N/A 10.00 mm 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
N/A MOL32 HUB 8MM N/KW N/A 8.00 mm 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
N/A MOL32 HUB 10MM N/KW N/A 10.00 mm 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
N/A MOL32 HUB 11MM N/KW N/A 11.00 mm 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
N/A MOL32 HUB 12MM N/KW N/A 12.00 mm 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
N/A MOL32 HUB 14MM N/KW N/A 14.00 mm 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
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