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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.
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Timken Part Number

Description 

Bore Size 

Coupling Size

Keyway Size

Length thru Bore

Overall Coupling Length

Nominal Torque

Max Speed

68514458603 N/A MOL16C HUB 1/8 N/KW N/A 1/8 in N/A MOL16C N/A No Keyway N/A 0.492 in12.50 mm N/A 1.142 in29.00 mm N/A 6.20 in·lb N/A 9500.00 rpm
68514458083 N/A MOL16C HUB 3/16 N/KW N/A 3/16 in N/A MOL16C N/A No Keyway N/A 0.492 in12.50 mm N/A 1.142 in29.00 mm N/A 6.20 in·lb N/A 9500.00 rpm
68514458095 N/A MOL20C HUB 1/4 N/KW N/A 1/4 in N/A MOL20C N/A No Keyway N/A 0.551 in14.00 mm N/A 1.299 in33.00 mm N/A 10.60 in·lb N/A 7600.00 rpm
68514458609 N/A MOL20C HUB 1/8 N/KW N/A 1/8 in N/A MOL20C N/A No Keyway N/A 0.551 in14.00 mm N/A 1.299 in33.00 mm N/A 10.60 in·lb N/A 7600.00 rpm
68514458610 N/A MOL20C HUB 3/16 N/KW N/A 3/16 in N/A MOL20C N/A No Keyway N/A 0.551 in14.00 mm N/A 1.299 in33.00 mm N/A 10.60 in·lb N/A 7600.00 rpm
68514458096 N/A MOL20C HUB 5/16 N/KW N/A 5/16 in N/A MOL20C N/A No Keyway N/A 0.551 in14.00 mm N/A 1.299 in33.00 mm N/A 10.60 in·lb N/A 7600.00 rpm
68514458617 N/A MOL25C HUB 1/4 N/KW N/A 1/4 in N/A MOL25C N/A No Keyway N/A 0.650 in16.50 mm N/A 1.535 in39.00 mm N/A 17.70 in·lb N/A 6100.00 rpm
68514458615 N/A MOL25C HUB 1/8 N/KW N/A 1/8 in N/A MOL25C N/A No Keyway N/A 0.650 in16.50 mm N/A 1.535 in39.00 mm N/A 17.70 in·lb N/A 6100.00 rpm
68514458107 N/A MOL25C HUB 3/8 N/KW N/A 3/8 in N/A MOL25C N/A No Keyway N/A 0.650 in16.50 mm N/A 1.535 in39.00 mm N/A 17.70 in·lb N/A 6100.00 rpm
68514458618 N/A MOL25C HUB 5/16 N/KW N/A 5/16 in N/A MOL25C N/A No Keyway N/A 0.650 in16.50 mm N/A 1.535 in39.00 mm N/A 17.70 in·lb N/A 6100.00 rpm
68514458121 N/A MOL32C HUB 1/2 N/KW N/A 1/2 in N/A MOL32C N/A No Keyway N/A 0.748 in19.00 mm N/A 1.772 in45 mm N/A 39.80 in·lb N/A 4800.00 rpm
68514458119 N/A MOL32C HUB 3/8 N/KW N/A 3/8 in N/A MOL32C N/A No Keyway N/A 0.748 in19.00 mm N/A 1.772 in45 mm N/A 39.80 in·lb N/A 4800.00 rpm
68514458120 N/A MOL32C HUB 7/16 N/KW N/A 7/16 in N/A MOL32C N/A No Keyway N/A 0.748 in19.00 mm N/A 1.772 in45 mm N/A 39.80 in·lb N/A 4800.00 rpm
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