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    The SU Type coupling has a single flex plane, and is comprised of a single disc pack kit with two hubs. It is suitable for angular and axial misalignment only. Two SU couplings are often combined with a shaft to make a floating shaft coupling. The shaft can be hollow for long light weight floating shaft couplings.
Unit of Measure



N/A Lovejoy: CAD Models are accurate envelope dimensions only. Features such as bore size and keyway are not rendered or are only representative. Contact Lovejoy Technical Support or refer to product catalogs for details.



N/A SU202-6 CPLG 65MMX3-3/8 KW BE

Hub Style

N/A Standard


N/A Disc Coupling


N/A Steel

Keyway Size

N/A 18 x 4.4 mm & 7/8 x 7/16 inch


N/A 49.27 lb


N/A Bored


N/A Metallic

Coupling Series

N/A SU-6

Coupling Type

N/A Disc

Bore Size  

N/A 65 mm & 3-3/8 inch

Dimensional Data


N/A 202-6

Set Screw Style Coupling Size (Dimension T)

N/A No Setscrew

Length thru Bore

N/A 3.54 in89.92 mm

Dimension FD

N/A 7.950 in202.00 mm

Overall Length

N/A 7.690 in196.00 mm

Max. Bore (Dimensions ID1/ID2)

N/A 3.500 in90.00 mm

Dimension HD

N/A 4.920 in125.00 mm

Distance between Shaft Ends (Dimension BSE)

N/A 0.610 in15.50 mm

Cubic inches

N/A 486.02723 in³

Performance Data


N/A -40 to 450 ºF

Nominal Torque

N/A 40700 in·lb4600 N·m

Max. Torque

N/A 81400 in·lb9200 N·m

Max. Speed (Unbalanced)

N/A 3840 rpm

Max. Speed (Balanced)

N/A 9600 rpm

Max. Angular Misalignment

N/A 1.00 º

Torsional Stiffness x 10^6 (of one disc pack)

N/A 13.3 in·lb/rad1.50 Nm/rad

Rated Power at 100 rpm

N/A 64.6 hp48.2 kW



  • Unitized disc pack
  • Infinite life when properly aligned
  • Torsionally rigid without any back lash
  • No need for lubrication or maintenance
  • No wearing parts and high resistance to harsh environmental conditions
  • Larger sizes are available upon request
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