Two-Piece Shaft Collar, 303 Stainless Steel, Clamp Style




Ruland SP-12-SS is a two-piece shaft collar with a 0.7500″ bore, 1 1/2″ OD, and 0.500″ width. The clamp style design does not mar the shaft, is easy to remove, and is indefinitely adjustable. It is commonly used for guiding, spacing, stopping, mounting, and component alignment. Equipment manufacturers benefit from the tightly controlled face to bore perpendicularity (TIR of ≤ .002″). Perpendicularity is critical for alignment when the shaft collar is used as a load bearing face, mechanical stop, or for mounting components such as gears or bearings. Proprietary processes have been developed by Ruland to maintain superior fit, finish, and holding power. SP-12-SS is stamped with the Ruland name and bore size for ease of identification. Halves are mated throughout the manufacturing process for proper fit and alignment. Forged screws test beyond ANSI standards to ensure maximum holding power. SP-12-SS is manufactured from solid bar stock sourced from select North American mills and machined to a fine burr free finish. Ruland uses 303 stainless steel with hardware of like material for consistent corrosion resistance. Stainless steel hardware undergoes a proprietary surface treatment process to prevent galling. SP-12-SS is RoHS3 and REACH compliant and manufactured in our Marlborough, MA factory under strict controls using proprietary processes.

Bore (B)  0.7500 in Bore Tolerance  +0.0020 in / +0.0005 in
Outer Diameter (OD) 1 1/2 in Clearance Diameter (C) MAX  1.808 in
Width (W) 0.500 in Width Tolerance +0.003 in / -0.010 in
Recommended Gap  0.063 in Recommended Shaft Tolerance  +0.0000 in / -0.0005 in
Forged Clamp Screw  1/4-28 Screw Material 18-8 300 Series Stainless Steel
Hex Wrench Size  3/16 in Screw Finish  Bright
Seating Torque  110 lb-in Screw Location (R) 0.545 in
Number of Screws 2 ea
Material Specification Type 303 Austenitic, Non-Magnetic Bar Finish Specification  Bright, No Plating
Manufacturer Ruland Manufacturing Country of Origin USA
Temperature  -40°F to 350°F (-40°C to 176°C) Weight (lbs) 0.174800
UPC 634529020463 Tariff Code 8483.60.8000