Deburr, Blend and Finish Stainless Steel
3M Cloth Belt 777F contains a grinding aid that reduces running temperatures when used on heat-sensitive alloys like stainless steel, nickel alloys and cobalt alloys. The abrasive grain is bonded to the backing with resin to maintain durability under high heat and pressure. This belt is recommended for use on stainless steel or other exotic metal alloys for dimensioning parts, deburring, blending, and finishing castings and forgings.
Ceramic Abrasive Grain Boosts Performance
For increased performance, 777F products feature aluminum oxide blended with 3M ceramic abrasive grain for a harder, longer-lasting abrasive. Ceramic/aluminum oxide blend surpasses aluminum oxide abrasives in cut-rate and durability and makes the Cloth Belt 777F an excellent choice for moderate stock removal and surface preparation.
Sized to Suit Your Needs
These abrasive belts are available in various widths and lengths for sanding both wood and metal. We offer a broad selection of belts to fit most any industrial belt sander. Wider belts are used with wide belt sanders to dimension or finish wood panels, smooth rough-cut edges of metal sheets, or add a grain pattern to stainless steel sheets. Medium-width belts fit onto edge sanders for sanding flat, narrow surfaces such as panel edges; and narrow belts are used with portable belt sanders for sanding or blending wood pieces such as cabinet doors.
Find Your Flex
Belts come with various flexibilities and splices that join the belt ends. Our 3M Cloth Belt 777F has a film splice for added strength when grinding in high pressure applications. When greater flexibility may be needed to increase conformity or for a softer touch for finishing and blending, an L-flex provides more flexibility than the standard flex, and a full flex belt is the most flexible.
Applications
- Moderate stock removal
- Deburring stainless steel
- Finishing stainless steel
- Surface preparation

Dynabrade 93561 3" Dia. x 1/4"-20 Female Center Thread, 180 Grit, A/O, 3-Ply, J-DynaCut Eyelet Star, 50/pack
Dynabrade 59391 Housing for Model # X61VHS
Dynabrade 78388 4-1/2" Dia. x 7/8" Center Hole, Type 29, 80 Grit, A/O DynaCut Flap Disc, 10/pack
Dynabrade 54980 Back-Up Flange- Type 27
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Dynabrade 78118 3/4" W x 20-1/2" L Very Fine NWN DynaBrite Belt, 10/pack
Dynabrade 90461 1/2" W x 24" L Coarse NWN DynaBrite Premium Belts, 10/pack
Dynabrade 51623 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet
Dynabrade 50018 Collet, M8 x 1.0 Female Thread, 3/8" Capacity
Dynabrade 79837 3" 1200 Grit Dynacut Extreme Orange Film Non Vac Hook Face Disc, 50 per box
Dynabrade 64903 Variable Speed Versatility Grinder, 3 hp, 460 V (AC), 3 Phase, 50/60 Hz, 2,000-8,000 SFPM, 1/4"-2" W x 72" L (6-51 mm x 122 cm) Belts
Dynabrade 79013 1/2" W x 12" L 120 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 61384 - 8" (203 mm) Dia. Cut & Polish Rotary/Random Orbital Head 
