Oldham Couplings Code19-41: Precision Connections for Light-to-Medium Duty

Oldham couplings use a three-component design—two aluminum hubs and a center disc—to transmit torque while allowing parallel and angular misalignment. Unlike jaw or beam couplings, the Oldham design maintains constant velocity and introduces minimal bearing loads.

Standard Size Range (Code19 to 41)

Custom bores available up to 50mm

Misalignment Capability

• Parallel misalignment: ±0.5mm

• Angular misalignment: ±2°

• Axial motion: Limited (use other coupling types for significant end-play)

Material Options

• Hubs: 6061-T6 aluminum (anodized), C36000 brass, or 304/316 stainless steel

• Center Disc: UHMWPE (standard), nylon (high temperature), or polyurethane (oil-resistant)

Mounting Options

• Clamp type: Runout within 0.01mm, ideal for servo and encoder connections

• Setscrew type: DIN 916 compliant for positive shaft locking

Key Advantages

• Zero backlash throughout service life

• Replaceable center disc extends hub life—tool-less change in under 5 minutes

• Electrically isolating between hubs (no current path)

• No lubrication required

Typical Applications

• Encoder to motor shaft connections

• Medical device actuators and pumps

• Packaging and labeling machinery

• Laboratory instruments and test equipment