One-Piece Industry Standard Clamping Coupling with or without Keyway

Motor & Grinder Shaft Arbors


  • Nut Lock Type – for smooth shafts
  • For mounting various wheels (buffs, wire brush, non-woven, etc.)
  • Arbor is secured to smooth motor shafts with socket set screws
  • RH (right-hand) units with ½”-20 threaded arbors can also be used to mount Climax keyless chucks to drive various shank-mounted accessories
  • Use RH (right-hand) type for counter-clockwise shaft rotation (facing shaft)
  • Use LH (left-hand) type for clockwise shaft rotation (facing shaft)

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Type A “Small”
This type is ideal for use on smaller fractional horse-power motors.

One-Piece Industry Standard Clamping Coupling with or without Keyway

Motor and Grinder Shaft Arbors - Type A "Small"
Type Machined Washer
Dia.
Stamped Fits
Washer Dia.
Fits
Shaft Dia.
Wheel
Hole
Max Thread Wheel Width Thread
Length
O.A.L.
A A-320-D 1 A-320 1 1/4 1/4 3/8 R.H. 1/2 1 1/8 2
A A-325-D 1 A-325 1 1/4 5/16 3/8 R.H. 1/2 1 1/8 2
A A-330-D 1 A-330 1 1/4 3/8 3/8 R.H. 1/2 1 1/8 2
A AL-320 1 1/4 1/4 3/8 L.H. 1/2 1 1/8 2
A AL-325 1 1/4 5/16 3/8 L.H. 1/2 1 1/8 2
A AL-330 1 1/4 3/8 3/8 L.H. 1/2 1 1/8 2


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Type B “Standard”
These Arbors have a 1/2” diameter threaded portion that is 1-13/16” long which can accommodate wheels up to 1-1/4” wide.

One-Piece Industry Standard Clamping Coupling with or without Keyway

Motor and Grinder Shaft Arbors - Type B "Standard"
Type Machined Washer Dia. Stamped Fits
Washer Dia.
Fits
Shaft Dia.
Wheel Hole Max Thread Wheel Width Thread
Length
O.A.L.
B AS-4 1 1/2 AS-4FS 1 5/8 1/2 1/2 R.H. 1 1/4 1 13/16 3 1/2
B AS-5 1 1/2 AS-5FS 1 5/8 5/8 1/2 R.H. 1 1/4 1 13/16 3 1/2
B AL-4 1 1/2 AL-4FS 1 5/8 1/2 1/2 L.H. 1 1/4 1 13/16 3 1/2
B AL-5 1 1/2 AL-5FS 1 5/8 5/8 1/2 L.H. 1 1/4 1 13/16 3 1/2
B AL-6 1 1/2 AL-6FS 1 5/8 3/4 1/2 L.H. 1 1/4 1 13/16 3 1/2
B AL-5-KW 1 1/2 5/8 1/2 L.H. 1 1/4 1 13/16 3 1/2
B AS-5-KW 1 1/2 5/8 1/2 R.H. 1 1/4 1 13/16 3 1/2

*AL-5-KW and AS-5-KW have a keyway.



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Type C “Extra Long”
Similar to Type B except the threaded portion is longer at 2-5/8” which can accommodate wheels up to 2” wide.

One-Piece Industry Standard Clamping Coupling with or without Keyway

Motor and Grinder Shaft Arbors - Type C "Extra Long"
Type Machined Washer Dia. Stamped Fits
Washer Dia.
Fits
Shaft Dia.
Wheel Hole Max Thread Wheel Width Thread
Length
O.A.L.
C A-3 1 1/2 A-3FS 1 5/8 3/8 1/2 R.H. 2 2 5/8 4 1/4
C A-4 1 1/2 A-4FS 1 5/8 1/2 1/2 R.H. 2 2 5/8 4 1/4
C A-5 1 1/2 A-5FS 1 5/8 5/8 1/2 R.H. 2 2 5/8 4 1/4
C A-6 1 1/2 A-6FS 1 5/8 3/4 1/2 R.H. 2 2 5/8 4 1/4




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Type D “Heavy Duty”
Designed especially for larger buffing & polishing units. The wide shoulder provides plenty of clearance plus ample space for easy movement & positioning of work pieces.

One-Piece Industry Standard Clamping Coupling with or without Keyway

Motor and Grinder Shaft Arbors - Type D "Heavy Duty"
Type Machined Washer
Dia.
Stamped Fits
Washer
Dia.
Fits
Shaft
Dia.
Wheel
Hole
Max
Thread
Wheel
Width
Thread
Length
O.A.L.
D AS-4-L 1 1/2 AS-4FS-L 1 5/8 1/2 1/2 R.H. 1 5/8 2 1/4 6 1/4
D AS-5-L 1 1/2 AS-5FS-L 1 5/8 5/8 1/2 R.H. 1 5/8 2 1/4 6 1/4
D AL-4-L 1 1/2 AL-4FS-L 1 5/8 1/2 1/2 L.H. 1 5/8 2 1/4 6 1/4
D AL-5-L 1 1/2 AL-5FS-L 1 5/8 5/8 1/2 L.H. 1 5/8 2 1/4 6 1/4




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Type E “Screw Lock” for Threaded Shafts
Designed for Threaded Shafts. Hex adapter can be used with longer screws to mount thicker wheels.

One-Piece Industry Standard Clamping Coupling with or without Keyway

Motor and Grinder Shaft Arbors - Type E "Threaded Shafts"
Type Machined Washer
Dia.
Stamped Washer
Dia.
Fits
Shaft
Dia.
Fits
Arbor Hole
Wheel
Width
Up To:
O.A.L.
E GA-3 1 5/ 8 1/2-20 1/ 2 1/ 2 2 1/ 4
E GA-1 1 5/ 8 5/8-11 1/ 2 1/ 2 2 1/ 4
E GA-2 1 1/ 2 5/8-11 5/ 8 1/ 2 3