Cut Sheet

B-109
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How to Select Resurfacer
Grade
Tool-Type Resurfacer
Pencil-Type Resurfacer
Tramway-Handle
Resurfacer
Powr-Polish™ Flexible
Abrasive
Small Motor-Type
Resurfacer
Small Motor and Pocket Resurfacers
Grade code letters designate the following grade combinations:
A Medium/Finish G Coarse/Medium
B Coarse/Finish H Medium/Polish
D Finish/Polish
All Other Resurfacers
Resurfacers for commutators and copper-alloy slip rings are
made in five grades:
X Extra coarse— very fast cutting, for “hogging” off excessive
copper
C Coarse—fast cutting
M Medium—for general use, high mica, small ridges and
burns
F Finish—for use after the three grades above, for periodic
application and for removing small burns and ridges
immediately after their appearance
P Polish—very fine grade (220 aggregate grain) for burnish
finish
For all resurfacers, specify grade by adding the appropriate letter
as a suffix to the catalog number. (Example: 80-475M for medium
grade.)
Size is always written length x width x thickness (working face
area x depth of stone). For handle types, the handle is mounted
parallel to the first dimension. Always use a resurfacer with
the largest face possible (length x width). Thickness should be
governed by clearance around commutator or ring.
Commutator Resurfacers
The resurfacer should have a width of approximately 3/4 the
length of the commutator bar and as long as will conveniently
go between the brush riggings. For periodic application,
three or four sizes are generally sufficient. After determining
approximate dimensions, select nearest standard size and type.
Slip Ring Resurfacers
When space permits, use a resurfacer about 1 in. wider than the
face width of the ring. Length should be at least three times
greater than the longest flat spot to bridge over and ensure a
true ring.
• Handle shaped to ensure secure grip
• 10-1/2 in. handle permanently
mounted at 45° angle
• For use on fans, signal motors, auto generators, locomotive
headlight motors and other fractional horsepower
motors
• Different grades of stone on each end
• 10 in. handle
• For use on small fractional horsepower motors
• For use in lathe-turning device
• Two resurfacers required for each grinder
Size (In.) Grades Cat. No.
3/4 x 1/2 x 3/8
A, B, D 80-012*
*Add grade letter suffix to Cat. No. Please allow 2-3 weeks for delivery.
Sizes (In.) Grades Cat. No.
3/4 x 3/4 x 3 C 80-504*
1 x 1-1/2 x 6-1/2
C, M, F
80-454*
1 x 2 x 8 80-461*
2 x 2 x 8 80-475*
*Add grade letter suffix to Cat. No. Please allow 2-3 weeks for delivery.
Size (In.) Grades Cat. No.
5/8 x 3/8 x 6
C, M, F, P 80-075*
*Add grade letter suffix to Cat. No. Please allow 2-3 weeks for delivery.
W
T
L
Sizes (In.) Grades Cat. No.
2 x 1-1/2 x 2 M, F 80-255*
2 x 2 x 2 C, M, F 80-265*
*Add grade letter suffix to Cat. No. Please allow 2-3 weeks for delivery.
• Fine-grain, non-dusting abrasive held together by a
flexible bond
• Serves as both commutator cleaner and burnisher
• Removes dirt and grease—imparts super-finished surface
• Non-conductive and non-loading
Sizes (In.) Cat. No.
3/8 x 1/2 x 5 82-001
3/8 x 3/4 x 5 82-002
5/8 x 1 x 5 82-003
1 x 2 x 5 82-004
1 x 4 x 5 82-005
1/8 x 1 x 5 82-006
Please allow 2-3 weeks for delivery.
How to Select Resurfacer
Size
commutator maintenance