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$57.12 ea
Quantity Price (USD)
1 $57.12 ea
20 $34.27 ea
60 $28.56 ea
100 $25.70 ea
250 Request Quote
In stock
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Ruland MSPK-25-SS, 25mm Two-Piece Shaft Collar, 303 Stainless Steel, Clamp Style With Keyway, 45mm OD, 15mm Width


Ruland MSPK-25-SS is a two-piece shaft collar with a 25mm bore, 8mm keyway, 45mm OD, and 15mm 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. The keyway prevents slippage on the shaft when the shaft collar is used for positive drive. Equipment manufacturers benefit from the tightly controlled face to bore perpendicularity of Ruland shaft collars, TIR of ≤ 05mm. 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. MSPK-25-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 DIN 912 12.9 standards to ensure maximum holding power. MSPK-25-SS is machined from solid bar stock to a fine burr free finish and sourced exclusively from North American mills. 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. It is RoHS2 and REACH compliant and manufactured in our Marlborough, MA factory under strict controls using proprietary processes.



Bore B

25 mm

Bore Tolerance

+.050 mm / +.012 mm

Keyway K

8 mm

Width W

15 mm

Outer Diameter OD

45 mm

Width Tolerance

+.076 mm / -.254 mm

Clearance Diameter C MAX

52.1 mm

Fastening Hardware

Forged Clamp Screw

M6 x 16

Screw Material

18-8 300 Series Stainless Steel

Hex Wrench Size

5.0 mm

Screw Finish


Seating Torque

9.6 Nm

Screw Location R

17.50 mm

Number of Screws

2 ea

Additional Information

Material Specification

Type 303 Austenitic, Non-Magnetic Bar


-40°F to 350°F
-40°C to 176°C

Finish Specification



Ruland Manufacturing

Country of Origin


Weight (lbs.)




Product Notes

Note 1

Performance ratings are for guidance only. The user must determine suitability for a particular application.

Prop 65

WARNING This product can expose you to the chemical Nickel (metallic), known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

ISO 9001:2015


Conflict Minerals






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