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Black oxide steel step-up adapter clamp with 1/2 inch bore and 3/4 inch shaft

Climax Metal Products

Climax Metal Products SUA-050 Step Up Adapter Clamp On 1/2 In Bore

SKU CH-JG82-CWE6M

Clamp-on step-up adapter increases a 1/2 in bore to a 3/4 in shaft with black-oxide steel construction

  • Product typeCouplings, Collars & Adapters
  • Steps up a 1/2 in bore to a 3/4 in shaft for flexible mounting
  • Bore tolerance +.003/-.000 in ensures a precise, secure fit
  • Shaft tolerance -.000/-.003 in maintains accurate alignment under load
  • Black oxide finish on ASTM A108 steel resists corrosion in harsh environments
  • 8-32 set screw in ASTM A574 steel provides strong, reliable locking force

Step-Up Adapter for 1/2-Inch Bore

The Climax Metal Products SUA-050 adapts a 1/2-inch bore to a 3/4-inch shaft diameter using a clamp-on design. It suits maintenance technicians and machine-shop personnel who need to connect mismatched shaft and bore sizes on power-transmission components. The steel body with black-oxide finish resists corrosion in industrial environments.

Steel Construction With Black-Oxide Finish

The adapter body is made from ASTM A108 steel and the set screw from ASTM A574 steel, both treated with a black-oxide coating. Bore tolerance is held at +0.003/-0.000 inch and shaft tolerance at -0.000/-0.003 inch, supporting consistent fit during continuous operation. Overall length measures 2 3/4 inches with a 1 1/4-inch bore depth.

Verify Shaft And Bore Dimensions Before Ordering

Confirm that the driven component has a 1/2-inch bore and the driving shaft measures 3/4 inch in diameter. The clamp-on mechanism uses an 8-32 set screw 1/2 inch long, so ensure the shaft material can accept the screw without damage. Buyers needing a step-down configuration or a different bore size should select another adapter.

How it compares

Measured against everything we stock in Bearings, Belts & Drive Components, at today’s prices. Recalculated every night.

Price $37.99
Typical for this category: the median of 693 items is $35.99.

Specifications

Product
Product typeCouplings, Collars & Adapters

Questions about this item

How much heat or noise does the SUA-050 generate during continuous operation?

The SUA-050 is a passive steel adapter with no moving parts, so it produces no measurable heat or noise regardless of run time.

What shaft and fastener must already be on the machine for the SUA-050 to mount?

You need a 3/4 in shaft with an 8-32 threaded hole to accept the 1/2 in long set screw supplied with the adapter.

Will the 1/2 in bore of the SUA-050 accept a legacy shaft that is slightly undersized?

The bore tolerance is +.003/-.000 in, so a shaft at nominal 1/2 in or up to .003 in over will fit; an undersized shaft would be loose.

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