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Two-piece steel clamp collar with visible socket-head screws and matte finish

Ruland Manufacturing

Ruland Manufacturing SP-34-F 2-Piece Clamp Collar 2-1/8 in Bore

SKU CH-E915-9790D

Two-piece carbon-steel clamp collar with 2-1/8 in bore and 3-1/4 in outside diameter for secure shaft mounting

  • Product typeCouplings, Collars & Adapters
  • Secure two-piece clamping for easy installation
  • Carbon steel 1215 construction delivers high strength
  • 5 in clearance diameter fits large shafts
  • Alloy steel screws provide reliable holding force
  • 3/4 in collar width ensures stable grip

Product Identity

The Ruland Manufacturing SP-34-F is a two-piece clamp collar with a 2-1/8 inch round bore, made from 1215 carbon steel. It suits maintenance teams and machine builders who need to secure components on inch-sized shafts without dismantling the assembly.

Installation Notes

The split two-piece design allows fitting around an existing shaft, while alloy steel screws provide the clamping force. Alignment of the mating faces matters; uneven tightening can distort the bore and reduce holding power on the 3-1/4 inch outside diameter.

Critical Specification

The bore diameter of 2-1/8 inches is the single dimension that determines fit; the collar will not clamp a smaller or larger shaft. Buyers working with metric shafts or different inch sizes must select another part.

How it compares

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

Price $28.99
Cheaper than about 56% of the 693 comparable items (median $35.99).

Specifications

Product
Product typeCouplings, Collars & Adapters

Questions about this item

How do I verify the SP-34-F collar is seated correctly after installation?

Tighten both alloy-steel screws evenly until the 2-piece carbon-steel body grips the 2-1/8 in shaft firmly with no axial play.

What comes in the box and what must I supply separately?

The package includes the 2-piece clamp collar; you must provide the 2-1/8 in round shaft and any required mounting hardware.

Which collar version matches a 2-1/8 in bore and 3-1/4 in outside diameter?

The SP-34-F is the 2-piece clamp collar with a 2-1/8 in bore, 3-1/4 in OD, 3/4 in width and 1215 carbon-steel construction.

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