Oldham Couplings

This page covers 2 series (JH1, JH2) with 14 catalogue sizes: bores from Ø3 to Ø25 mm, rated torque 0.7–33 N·m. Finished bores, keyways and clamp variants are machined to your shaft; sizes outside the tables are made to drawing.

JH series Oldham (cross-slider) couplings: three-piece construction with large radial-offset compensation, zero backlash and shock absorption; the center slider is replaceable. JH1 is set-screw mounted, JH2 is clamp mounted. Oldham couplings handle large radial (parallel) offset with zero backlash and a replaceable centre slider, and they electrically isolate the two shafts — useful between motors and lead screws or wherever shafts cannot be aligned precisely. JH1 mounts with set screws, JH2 with clamps; not for high speed or large angular error.

Yes. Everything on this page is made to drawing, and the table is only the standard-size subset of the catalogue. Minimum order quantity is one piece — we routinely make single replacement parts for OEMs whose original supplier has discontinued the item. Send a DWG, STEP or PDF drawing (or a sample part): you get a formal quotation within 24 hours after the information is complete, and the first article ships within 30 days of drawing approval, with inspection records.

Send: shaft diameters and lengths on both sides (with keyways or clamp preference), rated and peak torque, speed, the misalignment you expect (angular, radial, axial), space available (outside diameter and overall length), operating temperature and whether the drive is servo/positioning or general. A drawing or STEP of the two shaft ends is ideal; a sketch with these values is enough for a first quote.