We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small stainless steel cylinder with set screws, one inch long

Climax Metal Products

Climax Metal Products RC-031-S Rigid Shaft Coupling collectible

SKU CH-44WP-G3JT7

A stainless-steel rigid shaft coupling for 5/16 in bores, rated to 3,500 RPM and 71 in-lb torque

  • Product typeBearings, V-belts & Power Transmission Equipment
  • Product colorTransparent
  • Stainless-steel construction resists corrosion for long service life
  • One-piece design eliminates backlash and simplifies installation
  • Rated to 3,500 RPM for high-speed shaft connections
  • Transmits up to 71 in-lb of torque reliably
  • Fits 5/16 in round bores with .63 in clearance

Industrial Rigid Coupling

This new Climax Metal Products RC-031-S rigid shaft coupling joins two 5/16-inch round bores in a one-piece stainless-steel body. It transmits torque up to 71 in-lb at speeds up to 3,500 RPM. The 1-inch overall length and 0.63-inch clearance diameter keep the assembly compact for light-duty power-transmission tasks.

Build Integration

The coupling requires no keyways and uses set-screw locking, so installation only needs a hex driver and aligned shafts. Its one-piece construction eliminates the need for separate hubs or spacers, freeing axial space on the driveline. Identical bore diameters mean both shafts share the same 5/16-inch tolerance without adapters.

Target Users

Suitable for maintenance engineers and OEM assemblers who need a stainless, set-screw rigid coupling for 5/16-inch shafts running below 3,500 RPM. Not for buyers who need larger bore sizes, keyed connections, higher torque capacity, or flexible misalignment compensation.

How it compares

Measured against everything we stock in Fan Collectibles & Memorabilia, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 78% of the 1,367 comparable items (median $26.99).

Specifications

Product
Brand nameCLIMAX METAL PRODUCTS
Product typeBearings, V-belts & Power Transmission Equipment
Product colorTransparent

Questions about this item

What maximum torque can the RC-031-S handle before it slips?

The coupling is rated for 71 in-lb of torque, so sustained loads above that will cause slipping.

How hot or noisy does the stainless steel coupling get at 3,500 RPM?

At the rated 3,500 RPM the one-piece stainless steel body runs cool and silent; no bearings or lubrication are needed.

What shaft size must I already have for the 5/16 in bore to fit?

Both shafts must measure exactly 5/16 in diameter, as the coupling has no keyway and accepts only that size.

More in Fan Collectibles & Memorabilia

Similar items