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Stainless steel two-piece clamp shaft collar, 3/4 inch bore, 1.81 inch clearance diameter

Ruland Manufacturing

Ruland Manufacturing SP-12-SS 2-Piece Clamp Shaft Collar 3/4 In 303 SS

SKU CH-RJJM-4EYWD

Two-piece clamp shaft collar with 3/4 inch bore and 1.81 inch clearance diameter in 303 stainless steel

  • Two-piece design allows installation without shaft disassembly
  • 303 stainless steel construction resists corrosion in harsh environments
  • 81 in clearance diameter fits standard 3/4 in shafts
  • Clamp-style fastening provides secure grip without marring shaft surface
  • 1/2 in collar width balances strength with compact profile

Two-piece stainless shaft collar

The Ruland SP-12-SS is a 2-piece clamp-style shaft collar machined from 303 stainless steel. Its split design allows installation or repositioning on a 3/4 in round shaft without removing other components. The collar measures 1 1/2 in outside diameter and 1/2 in wide with a 1.81 in clearance diameter.

Suited for inch shafts needing frequent adjustment

Engineers specifying inch-dimension shafts benefit from the two-piece construction that simplifies maintenance on conveyors, lead-screw assemblies or light-duty drives. Applications requiring a keyway, threaded bore or a one-piece solid collar should consider alternatives.

Critical spec: 3/4 in bore diameter

The collar fits a precise 3/4 in round bore and clamps with stainless steel screws. Verify the shaft diameter matches this bore before ordering, as no other bore sizes are offered for this part number.

Highlights

  • Two-piece design allows installation without shaft disassembly
  • 303 stainless steel construction resists corrosion in harsh environments
  • 81 in clearance diameter fits standard 3/4 in shafts
  • Clamp-style fastening provides secure grip without marring shaft surface
  • 1/2 in collar width balances strength with compact profile

Specifications

No published specifications for this item yet.

Questions about this item

How much heat does the 303 stainless-steel collar generate when it runs continuously on a 3/4 in shaft?

The collar is a passive mechanical component with no moving parts or power draw, so it produces no measurable heat during continuous operation.

What shaft diameter and tolerance must I already have for the 3/4 in bore to clamp correctly?

The collar fits a round 3/4 in shaft; the shaft should be within standard inch-series tolerance so the two-piece clamp can close evenly around it.

Will the 1.81 in clearance diameter clear the bearing housing I am already using on the same shaft?

The 1.81 in clearance diameter provides space around the shaft; compare that figure with your housing bore to confirm there is no interference.

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