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Black-oxide steel rigid coupling with keyway and clamp screw

Climax Metal Products

Climax Metal Products CC-125-125-KW Rigid Steel Coupling

SKU CH-MFX1-9PD3V

Rigid steel shaft coupling with 125 bore, keyway, and 3,080 in-lb torque capacity

  • One-piece clamp enables fast shaft alignment
  • Black-oxide steel resists corrosion in harsh environments
  • Keyway design transmits up to 3,080 in-lb torque
  • 4,000 RPM rating supports high-speed operation
  • 25 in outside diameter fits standard inch bores

Rigid steel coupling with keyway

This one-piece clamp coupling joins two 1 1/4 inch shafts in power-transmission assemblies. The black-oxide finished steel body transmits up to 3,080 in-lb of torque at speeds up to 4,000 RPM. It suits maintenance and OEM builds that need a simple, high-strength connection.

Keyway and clamp screw fix alignment

A 1/4 inch keyway locks rotational timing between shafts while the 1/4-28 clamp screw secures axial position without marring the shaft. This combination removes the need for separate keys or set-screw dimples during installation.

Compact steel body fits tight layouts

At 2 1/4 inches overall length and 2.25 inches outside diameter the coupling sits inside confined machine frames. The rigid steel construction resists shock loads and holds concentricity over extended duty cycles.

How it compares

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

Price $64.99
Pricier than about 74% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameCLIMAX METAL PRODUCTS

Questions about this item

Will the black-oxide finish or the 1/4 in. keyway need periodic re-lubrication or replacement?

The coupling is a single-piece steel clamp with a black-oxide coating and a 1/4 in. keyway; no lubrication schedule or wear parts are specified.

Which limit appears first during continuous operation — the 3,080 in-lb torque ceiling or the 4,000 RPM speed ceiling?

The 3,080 in-lb torque rating and the 4,000 RPM speed rating are independent limits; whichever threshold the application reaches first becomes the governing constraint.

How much heat or noise does the rigid steel body generate when running at 4,000 RPM all day?

As a solid steel clamp with no moving components, it produces negligible heat and no audible noise at 4,000 RPM.

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