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 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