Overview
The United Abrasives 77214 SAIT-LOK surface conditioning discs are medium-grade, non-woven abrasive discs ideal for controlled surface finishing without aggressive material removal. Designed with aluminum oxide grain coated onto synthetic fiber backing, these 3-inch discs deliver consistent results across a broad range of materials and applications while minimizing substrate damage.
Key Features
- Non-woven synthetic fiber backing resists loading and extends disc life without clogging
- Aluminum oxide grain provides consistent cutting action for controlled finishing
- Nylon attachment system ensures secure fit to standard backing pads
- Flexible construction conforms to contoured and flat surfaces
- No substrate removal — maintains base material integrity during finishing operations
- Pack of 25 discs ready for immediate use
Technical Specifications
- Diameter: 3 inches
- Grade: Medium
- Abrasive Material: Aluminum oxide
- Backing: Non-woven synthetic fiber
- Attachment Type: Nylon (fits standard hook-and-loop backing pads)
- Quantity: 25 discs per pack
- Color: Maroon (medium grade indicator)
- Manufacturer: United Abrasives/SAIT
- Safety Standards: ANSI B7.1, OSHA compliant
Typical Applications
- Light deburring and edge smoothing on ferrous and non-ferrous metals
- Blending surface scratches and tool marks
- Polishing welds and surface preparation
- Removal of coatings and adhesives without material loss
- Finishing on stainless steel, aluminum, fiberglass, and composite materials
- Surface conditioning on gaskets and precision parts
- Cosmetic finishing and surface preparation in fabrication shops
Compatibility & Replacements
Compatible With
- 3-inch angle grinders with hook-and-loop backing pads (5/8″-11 arbor standard)
- Bench grinders fitted with 3″ backing pad accessories
- Die grinders and rotary tools with appropriate 3″ pad adapters
- Pneumatic and electric orbital finishing platforms
- Hand-operated flexible-shaft grinders
Replaces / Drop-In Replacement For
- United Abrasives SAIT-LOK (previous generation, non-threaded hub version)
- Comparable 3″ medium-grade non-woven surface conditioning discs from competing abrasive manufacturers
Works With
- Standard hook-and-loop (Velcro-style) 3-inch backing pads
- All major angle grinder brands (DeWalt, Makita, Milwaukee, Bosch, Festool, etc.)
- Pneumatic rotary tools and flex-shaft grinders
- Manual surface finishing stations and benchtop grinders
