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Oldham Couplings

Oldham Lateral Offset Couplings

Rotation is transmitted through a central disc that slides over the tenons on the hubs under controlled preload conditions to eliminate backlash. These couplings provide generous radial compensation and easy maintenance.

Hubs: Clamp Style, thro' hole, Aluminium Alloy 2014A T6

Torque Discs: Standard (no thro' hole), Acetal

  • High torsional stiffness
  • Good bearing properties
  • Long backlash-free life
Oldham Coupling Drawing

Oldham Coupling Dimensions (complete coupling)

Coupling
Size
øD
mm
L
mm
L1
mm
L2
mm
øB Max.
mm
Moment of
Inertia
kgm² x10-8
Mass
kg x10-3
19mm 19.1 26.0 9.4 7.2 8 59 13
25mm 25.4 32.4 11.6 9.2 12 252 31
33mm 33.3 48.0 15.0 18.0 16 1133 74

Acetal Torque Disc Performance (at 20°C)

Coupling
Size
Peak
Torque
N/m
Max Compensation @3000 rpm Torsional Static Break
Torque
Nm
Angular
deg.
Radial
mm
Axial
±mm
Rate
deg./Nm
Stiffness
Nm/rad
19mm 1.7 0.5 0.2 0.1 0.50 115 8
25mm 4 0.28 205 13
33mm 9 0.15 0.093 615 53