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
Black oxide steel shaft coupling with keyway, 3 inch length

Climax Metal Products

Climax Metal Products RC-112-KW Rigid Shaft Coupling with Keyway

SKU CH-AZRM-KRWY9

Connects 1 1/8 inch shafts with a 1/4 inch keyway using set screws in black oxide steel

  • Steel construction resists wear
  • Black oxide finish protects against corrosion
  • Keyway design prevents shaft slippage
  • Set screw locking ensures secure fit
  • Three inch length suits standard installations

Rigid Shaft Coupling with Keyway

The Climax Metal Products RC-112-KW is a steel rigid shaft coupling designed to connect two shafts with a secure, zero-backlash joint. It suits maintenance engineers and machine builders who need a permanent, high-torque connection in industrial drivelines.

Check shaft diameter and keyway width before

Verify that both shafts measure exactly 1 1/8 in bore diameter and that each keyway is 1/4 in wide to match the coupling. Confirm the 3/8 in.-16 set-screw threads are compatible with your existing hardware and that the 2 1/8 in outside diameter clears adjacent components.

Steel construction resists wear under continuous

The black-oxide finished steel body transmits constant rotational loads without the fatigue associated with flexible couplings. Heat generated during sustained operation dissipates through the solid metal mass, maintaining alignment and preventing the creep that can develop in elastomeric alternatives over long duty cycles.

How it compares

Measured against everything we stock in Electrical Conduit & Fittings, at today’s prices. Recalculated every night.

Price $34.99
Pricier than about 55% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameCLIMAX METAL PRODUCTS

Questions about this item

What comes with the RC-112-KW coupling and do I need to buy the set screws separately?

The RC-112-KW is supplied as a single-piece steel coupling with a keyway; the 3/8 in.-16 set screws are included so no separate hardware is required.

How do I decide between the 1 1/8 in. bore and other sizes for my shaft?

Choose the 1 1/8 in. bore when your shaft diameter matches that size; the 1/4 in. keyway width and 2.125 in. clearance diameter are fixed on this model.

What does the 3 in. overall length mean once the coupling is installed on the shafts?

The 3 in. overall length is the installed distance between shaft ends, giving a rigid connection with the 2 1/8 in. outside diameter fully engaged.

More in Electrical Conduit & Fittings

Similar items