Electric Motor Brush Stones

Commutator Treating Kit

This versatile tool can quickly change shape to any job to keep small commutators operating at peak efficiency. Simply dip the tool in hot water for one minute and bend the handle to suit your application. The holder and inserts are non-conductive. The exclusive hex nut and screw locking assembly permits replacement and locking of the inserts, eliminating the chance of the stone becoming loose. The kit contains four grades of stones and grade FH seaters. Inserts are color coded for easy identification. Handles and replacement inserts are available separately.

Part Number: 
A000027202
Kit includes:
1 Holder
2 Coarse Stones (Red)
2 Medium Stones (Yellow)
2 Fine Stones (Green)
2 Extra Fine Stones (Black)
4 FH Brush Seating Stones (White)

Replacement Stones and Holder

Description Part No.
Holder with a medium stone and fine stone A000027203
Coarse Stones (Package of 6) A000027206
Medium Stones (Package of 6) A000027207
Fine Stones (Package of 6) A000027204
Extra Fine Stones (Package of 6) A000027208
FH Brush Seating Stones (Package of 6) A000027209
Holder Only A000027200

Commutator Dressing and Finishing Stones (Unmounted)


Description Dimensions Part No.
Soft Stone 6 x 3/8 x 5/8 A000026425
Medium Stone 6 x 1/4 x 3/8 A000027199

Brush Seating and Cleaning Stones (Unmounted)


Commutators and brushes of any material can be easily and accurately seated with brush seaters.
Description Dimensions Part No.
White Stone 1 x 1/2 x 4 3/4 A000027197
White Stone 1/2 x 1/4 x 4 3/4 A000027198

Commutator Brush Saver

This uniquely shaped plastic handle with resurfacing stones at each end (polish grade and finish grade) is designed for smoothing commutators on many small motors and generators. This non-conductive tool allows access into any motor frame when resurfacing the commutator to a smooth finish. This extends brush life and improves commutation.

Part Number: A000026360