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Stainless steel rigid shaft coupling with set screw 3/4 inch bore

Climax Metal Products

Climax Metal Products RC-075-S Conduit Coupling Stainless Steel 3/4 in Bore

SKU CH-MFM1-KDQ34

Connects 3/4 inch shafts with a stainless steel rigid coupling rated for 338 in-lb torque and 500 RPM

  • Stainless steel resists corrosion in harsh environments
  • 3/4 inch bore fits standard shaft sizes
  • Set-screw design enables quick, tool-free installation
  • 338 in-lb torque rating handles demanding loads
  • 3,500 RPM maximum speed suits high-speed applications

3/4 inch Stainless Steel Coupling

The Climax Metal Products RC-075-S is a rigid shaft coupling designed to join two 3/4 inch diameter shafts in mechanical assemblies. Its stainless steel construction provides corrosion resistance for industrial, automotive or marine environments. The one-piece set screw design allows straightforward installation without a keyway. This component suits maintenance engineers and machine builders needing a plain-finish, inch-dimensioned coupling.

Thermal and Power Characteristics

As a passive mechanical component, the coupling generates no heat and produces no audible noise during operation. It transmits rotary motion without electrical power draw or active cooling requirements. The stainless steel body dissipates frictional warmth naturally through its 1.5 inch outside diameter surface. Operational limits are defined by a maximum torque of 338 in-lb and a peak speed of 3,500 RPM.

Upgrade Considerations

This coupling replaces worn or undersized connectors on existing 3/4 inch shafting where a keyway is absent and a set screw fastening is preferred. The jump is worthwhile when the current joint exceeds the 338 in-lb torque rating or shows corrosion on lesser materials. It is not suited for applications requiring keyed shafts, higher RPM limits or bore diameters other than 3/4 inch.

How it compares

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

Price $36.99
Pricier than about 56% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameCLIMAX METAL PRODUCTS

Questions about this item

How do I install the 5/16 in.-18 set screws without stripping them?

Use a hex key that fully seats in each screw, tighten to the 338 in-lb torque limit, and check alignment on the 3/4 in. bore before final lock-down.

Will the plain stainless finish need any coating or replacement over time?

The plain stainless surface resists corrosion without extra coating; inspect set-screw threads during routine maintenance and replace screws if galling appears.

At what point does the 3,500 RPM rating become the limiting factor?

Sustained operation above 3,500 RPM exceeds the coupling's rated speed and will cause premature wear or failure.

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