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Two-piece 316 stainless steel shaft collar, 1 inch bore, clamp style

Ruland Manufacturing

Ruland Manufacturing SP-16-ST Shaft Collar 1 in 316 SS 2-Piece Clamp

SKU CH-W6MR-JDAFJ

A two-piece clamp shaft collar in 316 stainless steel with a 1-inch bore and 2.032-inch clearance diameter

  • TypeCouplings, Collars & Adapters
  • 316 stainless steel resists corrosion in harsh environments
  • Two-piece clamp design allows installation without shaft disassembly
  • 1 in bore fits standard inch-dimension shafts
  • Operating range from -40 °F to 350 °F suits extreme temperatures
  • 032 in clearance diameter provides generous shaft access

One-Inch Bore Clamp Collar

The Ruland SP-16-ST is a two-piece shaft collar with a 1 in bore machined from 316 stainless steel. It clamps around the shaft without marring the surface and suits inch-system drives in corrosive or high-temperature environments. The 316 alloy resists chemical attack and handles continuous service from minus 40 to 350 degrees F. Buyers who need a metric bore or a one-piece design will not find it here.

Two-Piece Upgrade Over Set-Screw Collars

Unlike single-piece or set-screw collars, this clamp style installs without sliding over shaft ends and distributes holding force evenly around the circumference. The switch is worth it when shafts are already assembled with bearings or gears in place, or when frequent repositioning is required. The 1/4-28 socket-head screws are also 316 stainless steel, eliminating galvanic mismatch. It does not serve applications that demand a keyway or a threaded bore.

Half-Inch Width And 2.032 In Clearance

At 1/2 in wide with a 1 3/4 in outside diameter, the collar fits standard 1 in shafts while the 2.032 in clearance diameter provides room for adjacent components. The slim profile keeps rotational inertia low on light drives. It runs out of space in tight housings that cannot accommodate the 2.032 in sweep or where axial loads exceed the clamp friction capacity. California Proposition 65 applies.

Highlights

  • 316 stainless steel resists corrosion in harsh environments
  • Two-piece clamp design allows installation without shaft disassembly
  • 1 in bore fits standard inch-dimension shafts
  • Operating range from -40 °F to 350 °F suits extreme temperatures
  • 032 in clearance diameter provides generous shaft access

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

What bore size and shaft diameter does the 1 in collar fit?

The collar has a 1 in plain bore and a 1 3/4 in outside diameter, so it clamps directly onto a 1 in shaft with 2.032 in clearance.

How do I install the 2-piece clamp and which screw torque matters?

Separate the two halves, place them around the shaft, insert both 1/4 in.-28 316 stainless screws and tighten evenly; the step often missed is alternating torque on both screws to avoid cocking the collar.

When should I replace the 316 stainless screws or the collar itself?

Inspect the 1/4 in.-28 screws for thread galling or corrosion after high-temperature cycles up to 350 °F; replace screws or the full collar if the clamp no longer holds the shaft securely.

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