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Dayton 3ZN11 shaft arbor with left-hand thread and flanged washers

Dayton

Dayton 3ZN11 shaft arbor 3/8-24 LH thread hand tool

SKU CH-5YN3-YP67M

Shaft arbor with 3/8-24 left-hand thread mounts buffing and finishing wheels on smaller fractional-horsepower motors

  • Fits 3/8 in motor shafts for secure wheel mounting
  • Left-hand 3/8-24 thread matches clockwise motor rotation
  • 1 1/8 in thread length provides firm engagement
  • Includes flanged washers and hex nut for complete assembly
  • 1/2 in maximum wheel width suits small finishing wheels

Shaft Arbor for Small Motors

The Dayton 3ZN11 shaft arbor fits a 3/8 in shaft and uses a 3/8-24 LH thread for clockwise rotation. It mounts buffing and finishing wheels on smaller fractional horsepower electric motors. The overall length is 2 in with a 1 1/8 in thread length and 1/2 in maximum wheel width. Flanged washers and a hex nut are included for assembly.

Socket Setscrew Simplifies Installation

A socket-type setscrew secures the arbor to the motor shaft without special tools. The left-hand thread tightens against clockwise rotation so the wheel cannot spin loose during use. Ensure the motor shaft diameter matches 3/8 in and the rotation is clockwise; a mismatch in either dimension or direction will prevent a safe fit.

Steady Operation Under Continuous Load

The flanged washers distribute clamping force evenly across the wheel face to maintain alignment during extended buffing cycles. Left-hand threading resists the loosening torque generated by sustained clockwise rotation. The 1/2 in maximum wheel width limits the contact surface, so the arbor is suited to lighter finishing tasks rather than heavy material removal.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 87% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameDayton

Questions about this item

How can I verify the arbor is running correctly after mounting a buffing wheel?

Secure the wheel with the flanged washers and hex nut, confirm the 3/8-24 LH thread engages fully, then start the motor — clockwise rotation matching the shaft direction means it is seated properly

What components are included and what must I supply?

The package provides the arbor, flanged washers and hex nut; you must supply the motor with a 3/8 in shaft and the buffing or finishing wheel up to 1/2 in wide

Which version should I choose for a small fractional-horsepower motor?

Choose the Small-type arbor with 3/8-24 LH thread, 1 1/8 in thread length and 1 1/4 in washer OD — it is made for that motor class and wheel width

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