United Abrasives SAIT 70844 TrimBack Regular Density Flap Disc is designed to deliver reliable grinding performance, extended disc life, and excellent control for everyday metalworking applications. Featuring durable aluminum oxide 36 Grit abrasive, this disc provides aggressive stock removal with consistent cutting action—ideal for general-purpose grinding and surface preparation. The innovative TrimBack backing allows the backing plate to be safely trimmed as the disc wears, exposing fresh abrasive flaps and extending usable life.
With a Type 29 angled profile, the SAIT Disc delivers increased surface contact for efficient contouring, beveling, weld grinding, and heavy deburring. The 4-1/2" Diameter and 7/8" Arbor Hole ensure compatibility with most standard angle grinders for quick, secure mounting. Built for durability and versatility, the SAIT TrimBack Flap Disc offers consistent performance and extended service life—making it a practical choice for professional metalworkers and industrial users.
Type: Flap Disc | Abrasive Material: Aluminum Oxide | Diameter (in.): 4-1/2 | Arbor Hole (in.): 7/8 | Grit: 36 | Max RPM: 13300 | Disc Type: Type 29 | Box of: 10 | __quantity: 10
Features:
- Premium aluminum oxide with grinding aid for grinding and finishing on stainless steel with minimal discoloration
- Works great on aluminum and non-ferrous materials with minimal loading
- Provides long life while maintaining high stock removal rates
- Trimmable design allows for easy trimming to expose more material
- Only the TrimBack line of flap discs are able to be trimmed to expose more abrasive overhang
- Never trim beyond the maximum trim line (more than 1/4") or the ridged edge of the backing TrimBack plastic backing
- Always mount a TrimBack flap disc on a properly guarded right angle grinder
- To properly trim a TrimBack flap disc, apply the plastic backing to a secured metal workpiece while the grinder is running
Looking for more information about United Abrasives/SAIT Flap Disc? Click here to view the Catalog.
For help choosing the correct United Abrasives/SAIT Flap Discs for your application, please call (800) 608-5210 or email info@intlairtool.com.
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