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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.

How it compares

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

Price $15.99
Cheaper than about 70% of the 693 comparable items (median $35.99).

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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