A rigid coupling joins a stepper motor shaft to a lead screw or ball screw with no flex. Unlike a jaw or helical coupling there is no spring element to wind up under load, so positioning is more accurate and the full motor torque reaches the screw. The trade-off is that the two shafts must be well aligned.
Rigid coupling for connecting stepper motors with lead screws or ball screws. A rigid coupling allows for higher torque motors vs anti backlash / jaw couplings.
Bore combinations cover 4mm to 10mm motor shafts and 4mm to 10mm screw ends, in 20mm x 25mm and 25mm x 40mm bodies. Match the first bore to your motor shaft (NEMA23 is usually 6.35mm or 8mm) and the second to the screw.
Stocked in our Laverton North (Melbourne) warehouse and shipped Australia-wide. Standard shipping is free on orders over $200.
Best for
- Joining a stepper motor shaft to a lead screw or ball screw with no flex
- Bore combinations from 4mm to 10mm
Not for
- Shafts that can't be aligned closely: use a jaw or flexible coupling
Adam's Tip
Match the first bore to your motor shaft (NEMA23 is usually 6.35mm or 8mm) and the second to the screw end. Align the motor and screw carefully before tightening, because a rigid coupling won't take up misalignment.