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Standard Air-Cooled All Purpose Backing Pads
4 ½" Backing Pads
Smooth Face Backing Pads
High Speed Backing Pads
Angle Face Air-Cooled Backing Pads
Nuts, Wrenches, & Adapters
Resin Fibre Discs

4 ½" Pads

4.5 Inch Pads-Spiralcool
Part No. Maximum
RPM
Minimum order:
6 pads or 12 pieces hardware

Prefix Definitions:
F - Flexible
R - Medium
H - Rigid
RHS - High Speed

Suffix Definition:
-R - 5/8-11 Threaded Hub (Stock)
-5/8SB - 5/8" Smooth Bore
Please contact us for other thread options.
Type Flexible Medium Rigid
Spiral Face F425-5/8SB R425-5/8SB H425-5/8SB 11,000
Smooth Face F425SF-5/8SB R425SF-5/8SB H425SF-5/8SB 11,000
High Speed RHS425-5/8SB Hi Spd.   15,000


  • Spiralcool backing pads are manufactured and stocked with a 5/8 inch smooth bore hub. To ensure that you receive the correct pad, please specify make, model, and thread size of tool.
  • For special thread sizes please specify when ordering.
  • For special applications or current prices please contact Spiralcool or your local industrial/welding supply distributor.
  • No merchandise may be returned without permission from us in writing.
  • Prices subject to change without notice.
  • Terms: Net 30 Days; F.O.B. Bellevue, Ohio.
  • Minimum Order: six (6) backing pads or twelve (12) pieces of hardware.

FAQ's - Our special spiral design allows air to flow through the slotted hub and between the spirals on the face of the pad. This extends the disc life by 30% to 50% by keeping the disc cool and free of loading.

Q. What pad should I order to use with a 4 ½” tool?
A. It is best to call us with the make & model no. of the tool. We suggest an R425-5/8SB if you do not have information on the tool.

Q. The center nut is not long enough to thread all the way on the tool.
A. This problem is predominant in the 4 ½” size. Occasionally the 5” tools also have short spindles. We suggest using a smooth bore pad, in other words a pad with no threads. Smooth bore pads have the nose cut off the hub which decreases the depth of the hub. We may suggest R425-5/8SB (4 ½”) or R500-5/8SB (5”).

   

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