$23.63 ea
Quantity Price (USD)
50 $23.63 ea
100 $17.72 ea
250 $10.63 ea
500 Request Quote
In Production Lead Time: 2 Weeks or Less
Ruland MSPB-16-AN, 16mm Balanced Shaft Collar, Anodized Aluminum, Two-Piece Clamp Style, 34mm OD, 13mm Width


Ruland MSPB-16-AN is a two-piece shaft collar with a 16mm bore, 34mm OD, and 13mm width. It has a balanced design with opposing screws for use in high RPM applications such as those found in motors and gearboxes. 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 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. MSPB-16-AN 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. MSPB-16-AN is machined from solid bar stock to a fine burr free finish and sourced exclusively from North American mills. Ruland uses high grade 2024 aluminum with an anodized finish for increased screw seating torque and added corrosion resistance. It is RoHS2 and REACH compliant and manufactured in our Marlborough, MA factory under strict controls using proprietary processes.



Bore B

16 mm

Bore Tolerance

+.050 mm / +.012 mm

Outer Diameter OD

34 mm

Clearance Diameter C MAX

39.3 mm

Width W

13 mm

Width Tolerance

+.076 mm / -.254 mm

Fastening Hardware

Forged Clamp Screw

M5 x 16

Screw Material

18-8 300 Series Stainless Steel

Hex Wrench Size

4.0 mm

Screw Finish


Seating Torque

5.4 Nm

Screw Location R

12.50 mm

Number of Screws

2 ea

Additional Information

Material Specification

2024-T351 Aluminum Bar

Finish Specification

Sulfuric Anodized MIL-A-8625 Type II, Class 2 and ASTM B580 Type B Black Anodize


Ruland Manufacturing

Country of Origin



-40°F to 200°F
-40°C to 93°C

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

ISO 9001:2015


Conflict Minerals






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