Shaft Collar, 1pc Clamp, Bore 21mm, OD 42mm, Plastic, MSP-21-P MPN:MSP-21-P

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Brand: RULAND
Part #: MSP-21-P
UPC: 634529314951
SKU
510-G3403008
$91.58 for Order Qty of 2
Regular Price $64.11 Special Price $45.79

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Shaft Collar, 1pc Clamp, Bore 21mm, OD 42mm, Plastic, MSP-21-P

The Ruland MSP-21-P shaft collar is a precision-engineered, two-piece clamp-style collar designed for use in light-duty applications where corrosion resistance is required. Its acetal plastic construction and fine burr-free finish ensure a durable and reliable fit. With a 21mm bore and 42mm OD, this collar offers superior holding power and infinitely adjustable fit, making it ideal for use as a load-bearing face, mechanical stop, or component alignment. Its compact design allows for in-place installation and servicing, reducing downtime and increasing productivity in applications such as robotics, medical devices, and precision machinery.

Top product features:

  • It does not mar the shaft
  • It is infinitely adjustable
  • It has tightly controlled face to bore perpendicularity (TIR of < 0.05mm)

Top product applications:

  • Load bearing face in mechanical systems
  • Mechanical stop in assembly and disassembly operations
  • Component alignment in precision engineering applications
Ruland clamp style shaft collars do not mar the shaft, are infinitely adjustable, and have superior holding power when compared to set screw collars. This two-piece shaft collar has a 21mm bore, 42mm OD, and 15mm width. Tightly controlled face to bore perpendicularity is maintained (TIR of < 0.05mm) which is critical when the collar is used as a load bearing face, mechanical stop, or for component alignment. The work surface is identified by one groove on the face allowing the user to easily identify which side is precision faced. The two-piece design allows this collar to be installed or serviced in-place without the need to remove adjacent components. Halves are mated throughout the manufacturing process for precise fit and increased holding power. This collar is stamped with the Ruland name and bore size for ease of identification. It is manufactured from acetal plastic to a fine burr-free finish for use in light duty applications where corrosion resistance is required. Hardware tests beyond DIN 912 12.9 standards for maximum holding power. It is RoHS and REACH compliant.

Additional Information

  • Country of Origin: US
  • Drop Ship Item: Yes
  • Blind Ship Eligible: No
  • LTL Freight Required: No
  • Lead Time: Ships in 2 days
  • Minimum Order Quantity: 1
  • Unit of Measure: EA
  • Package Length: 7.00
  • Package Width: 5.00
  • Package Height: 2.00
  • Package Weight: 0.06
Product info last updated on February 1, 2026 9:42pm UTC Category: Bearings, V-belts and Power Transmission Equipment
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