We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Gray 3M SC-DR quick-change surface-conditioning disc, three-inch diameter, open-coat non-woven silicon carbide, super-fine grade

3M

3M 05529 SC-DR Quick Change Disc 3in Super Fine 18000 RPM

SKU CH-A3Y5-Z6XS0 MPN 05529

A non-woven surface-conditioning disc with silicon carbide abrasive in super fine grade for quick-change sanding at up to 18,000 RPM

  • TypeSanders
  • Super-fine finish with silicon-carbide abrasive
  • 18 000 RPM maximum operating speed
  • Quick-change TR system for fast disc swaps
  • Open-coating resists loading during use
  • Gray non-woven disc, 3 in diameter

Product identity

The 3M 05529 SC-DR is a surface-conditioning quick-change disc designed for use with compatible rotary sanders in automotive and industrial finishing tasks. Its non-woven silicon carbide construction suits technicians preparing surfaces for paint or removing light corrosion.

Critical specification

The disc carries a maximum operating speed of 18,000 RPM, and exceeding this limit risks disc failure and operator injury; verify that the sander's free speed matches or stays below this figure before mounting.

Thermals noise power

Normal use generates heat through friction at the work surface rather than within the disc itself; the open-coat, non-woven structure resists loading and runs cooler than coated abrasives, while noise and power draw depend entirely on the drive tool selected.

Highlights

  • Super-fine finish with silicon-carbide abrasive
  • 18 000 RPM maximum operating speed
  • Quick-change TR system for fast disc swaps
  • Open-coating resists loading during use
  • Gray non-woven disc, 3 in diameter

Specifications

TypeSanders
Brand3M
Model05529

Questions about this item

What does the 18 000 RPM maximum speed mean when the disc is mounted on a tool?

It is the highest spindle speed the disc can safely run at; exceeding it risks disc failure, so the tool must be set at or below that limit.

What does the TR quick-change system do and what does it cap in practice?

The TR quick-change system locks the 3 in disc onto a compatible backup pad with a twist motion; it caps the maximum operating speed at 18 000 RPM for safe use.

What backup pad and spindle size are needed to mount this 3 in disc?

A 3 in TR-style backup pad with the matching thread for the tool's spindle is required; the disc twists onto that pad for secure attachment.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.