

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The CLIMAX METAL PRODUCTS RC-031 is a rigid set screw shaft coupling designed to connect two shafts in a fixed, non-flexible arrangement. Machined from steel, this coupling features a 5/16 inch inside bore diameter, a 5/8 inch outside diameter, and a 1 inch body length. It belongs to the RC series and is secured using set screws without a keyway. Licensed mechanics, millwrights, and industrial maintenance techs use this type of coupling in light-duty shaft alignment and power transmission applications where shaft slip must be eliminated.
This coupling is suited for residential and light commercial mechanical assemblies where two shafts of matching diameter need to be rigidly joined. Typical applications include small motor-to-shaft connections, conveyor drives, and other machinery where alignment is fixed and flex is not required. The set screw design allows for tool-accessible installation and removal without specialized press equipment.
Designed as an OEM-style rigid coupling for shafts with a 5/16 inch diameter requiring a set screw connection without a keyway.
Installation is typically performed by millwrights or maintenance technicians using standard hex key sets to tighten the set screws. Power down and lock out all equipment before installing or removing shaft couplings. Ensure both shafts are fully seated to the proper depth within the coupling bore before torquing set screws. Do not overtighten set screws, as this can damage shaft surfaces or the coupling body.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!