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Dayton extra long shaft arbor with machined washer and hex nut

Dayton

Dayton 3ZN03 A-3 Extra Long Shaft Arbor 3/8 in 1/2-20 Thread 4 1/16 in Overall Length

SKU CH-MH20-2ZD01

Extra-long shaft arbor with 1/2-20 thread fits 3/8 inch shafts and includes hex nut and machined washers

  • Fits 3/8 in motor shafts for secure accessory mounting
  • 1/2-20 RH thread ensures compatible chuck connection
  • 4 1/16 in overall length provides extra reach
  • Includes hex nut and machined washers for complete setup
  • Designed for counter-clockwise rotation on buffing wheels

Extra Long Shaft Arbor 3/8 in

This Dayton 3ZN03 A-3 arbor fits a 3/8 inch shaft diameter and features a 1/2-20 right-hand thread. It is designed for mounting buffing and finishing wheels on electric motors. The extra long type provides a 4 1/16 inch overall length for extended reach.

Build Fit 1/2-20 Thread 2 5/8 in

The arbor includes a hex nut and machined washers with a 1 1/2 inch outside diameter. It uses a socket setscrew type for secure attachment to Dayton keyless chucks. The 2 5/8 inch thread length accommodates wheel widths up to 2 inches.

Upgrade From Standard Length Arbor

This extra long shaft replaces shorter arbors when deeper wheel mounting is required on electric motors. The jump is worth it for applications needing the 4 1/16 inch overall length and counter clockwise shaft rotation. It is not for users needing a different thread size or shaft diameter.

How it compares

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

Price $12.99
Cheaper than about 73% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameDAYTON

Questions about this item

How deep can the 2 5/8 in thread length engage a buffing wheel before it bottoms out?

The 2 5/8 in thread length determines maximum wheel hub engagement; wheels with thicker hubs may not seat fully on the extra-long arbor.

Does the 1 1/2 in machined washer diameter spread clamping force enough to prevent wheel wobble at motor speed?

The 1 1/2 in washer outside diameter distributes load across the wheel face, reducing vibration when the shaft rotates counter-clockwise.

Will a 1/2-20 RH thread fit my motor shaft directly or do I need an adapter?

The arbor requires a motor shaft with a matching 1/2-20 RH female thread; if your shaft is 3/8 in diameter with a different thread, an adapter is necessary.

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