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 62778 Main Cloth Assembly
Dynabrade 52834 1/4" Drill, .4 HP, Rear Exhaust, 3,600 RPM
Dynabrade 11619 Contact Wheel, 4" Dia. x 1" W x 5/8" I.D., Crown Face, 40 Duro Rubber
Dynabrade 78249 11-1/4" Dia., Medium, Hook-Face DynaBrite Disc, 10/pack
Dynabrade 02391 Housing Ass'y for 53811, 20,000 RPM
Dynabrade 82488 6" Dia. x 80 Grit A/O Vacuum PSA Filmbac DynaCut Disc, 100/Pack
Dynabrade 57748 Ring Gear
Dynabrade 91528 5" Non-Vacuum 100 Grit, Dynacut Extreme Orange Premium Film PSA Disc, 50/pack
Dynabrade 53157 Shroud
Dynabrade 80022 Dynamount Bench Mount (for Dynabelters)
Dynabrade 92260 2-1/4" W x 9-3/4" L 60 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 90335 3/4" W x 20-1/2" L 220 Grit A/O DynaCut Belt, 50/pack
Dynabrade 79315 5" Dia. x 7/8" Center Hole, 36 Grit, A/O DynaCut Fiber Disc, 25/box
Dynabrade 91569 6" Dynacut Extreme Orange Premium Film Disc, 320 Grit, Hook & Loop, Vacuum Holes, 50/Box
Dynabrade 94524 Sintered Bronze Muffler
Dynabrade 63987 - 3" 70 Dur. Contact Wheel Kit SuperFinisher
Dynabrade 11431 Dynafile Housing Ass'y for Model 14000
Dynabrade 78415 5" Dia., Medium, Hook and Loop, DynaBrite NWN Surface Conditioning Disc, 25/pack
Dynabrade 91318 11-1/4" Dia. x 60 Grit A/O "O" - style Vacuum Hook-Face DynaCut Disc, 10/Box
Dynabrade 78077 2" W x 34" L Very Fine NWN DynaBrite Belt, 10/Pack
Dynabrade 90851 4" Dia. x 4" W x 3/4" Center Hole, 80 Grit, A/O, DynaCut Flap Wheel w/Flange
Dynabrade 57160 Shaft Balancer
Dynabrade 96345 Bearing Separator
Dynabrade 78397 8" Dia. x 1" W x 3" Center Hole, 5A Medium, A/O DynaBrite Metal Finish Convolute Wheel, 2/box
Dynabrade 50431 Bearing
Dynabrade 79493 4-1/4" Dia. x 2" W x 5/8"-11 Center Thread, Coarse, DynaBrite Surface Conditioned Flap Roll 
