2-1/2" x 168" Sanding Belts, 4 PACK
2-1/2" x 168" Sanding Belts, 4 PACK
Available in stock (50000)
Fourteen feet of belt in a 2-1/2" width is a metal shop size: it runs on long-bed belt grinders, backstand and edge-type machines set up for grinding steel, stainless and aluminum bar, tube and plate. We convert these 2-1/2" x 168" belts in Anaheim, California in the four grains a fabrication shop actually needs: ceramic (our Shredder grain) for stainless and hardened steel, zirconia for carbon steel and aluminum, zirconia+ with a grinding aid for heat-sensitive ferrous work, and X-weight cloth aluminum oxide for budget grinding and the fine finishing grits.
Grits run from 24 for weld and scale removal to 600 for pre-polish, four belts to a pack. The heavy poly-cotton and polyester backings are built to take the pressure that makes zirconia and ceramic self-sharpen, and they can be run wet or dry.
- Four grains in one size: ceramic, zirconia, zirconia+ grinding aid and X-weight aluminum oxide
- Y-weight polyester and poly-cotton backings built for high-pressure metal grinding
- Grits from 24 to 600 cover weld removal through pre-polish
- Grinding-aid top coat on zirconia+ cuts heat on stainless and other ferrous alloys
- All backings can be run wet or dry
- Pack of 4; converted in Anaheim, California; free shipping over $200
Which 2-1/2" x 168" belt should you choose?
Match the grain to the metal and to how hard your machine can push. Zirconia and ceramic only self-sharpen under load; run them light and they glaze.
- Ceramic (Shredder): stainless steel, hardened and tool steel, and any high-heat job where you need the cut rate to stay constant. The red-orange sol-gel grain fractures continuously, exposing fresh edges until the belt is done. It costs more than zirconia and is the lowest cost per part on hard ferrous work, provided the grinder is rigid and powerful enough to keep it cutting.
- Zirconia: the workhorse for carbon and mild steel, general fabrication and heavy stock removal on aluminum. Y-weight poly-cotton backing. Made in 24 through 120 grit; above 120 the grain stops fracturing usefully, so switch to aluminum oxide for finishing.
- Zirconia+ (Grinding Aid): the same zirconia grain with a grinding-aid layer on top of the resin bond. The aid lubricates the cut and pulls heat out of the part, so it is our first pick for stainless, steel and other ferrous metals that discolour or work-harden when they get hot, and it outlasts plain zirconia on those jobs. Y-weight polyester backing.
- Cloth A/O X-weight: aluminum oxide on X-weight poly-cotton. The lowest-cost option, with reasonable life and cut on aluminum and mild steel, and the grain to use for every grit finer than 120. If your process ends at 150–600 grit before polishing, the fine belts will be aluminum oxide.
Grit availability differs by grain (zirconia and ceramic are coarse-to-medium grains, aluminum oxide carries the fine end), so check the selector for the exact combination you need. Anything we do not list in this size can be made to order.
Grit guide for steel, stainless and aluminum
| Grit | Use it for | Notes |
|---|---|---|
| 24–36 | Weld removal, scale, heavy stock | Ceramic or zirconia; firm pressure |
| 40–60 | Shaping, bevels, flattening | Start here on aluminum unless it is a rough casting |
| 80–120 | Blending, removing grinder marks, deburring | Top of the useful zirconia range |
| 150–220 | Pre-finish, graining | Aluminum oxide; use a grease stick on aluminum |
| 320–400 | Fine graining, pre-polish | Light passes, keep the part moving |
| 600 | Pre-polish before buffing | Aluminum oxide only |
Do not skip more than one grit. On stainless especially, a jump from 60 to 150 leaves scratches that show through a brushed or polished finish.
What machines take a 2-1/2" x 168" belt?
- Long-bed belt grinders and backstand grinders in metal fabrication shops that are set up for a 2-1/2" wide, 168" long belt.
- Edge sanders and stroke-style machines with a 2-1/2" belt path, used for long straight edges on plate, bar and extrusions.
- Tube and bar finishing machines where a long belt is chosen to spread heat and extend life between changes.
Fitment notes: measure an old belt or check the manual before ordering; most machines tolerate about 1/4" of length variation, and 168" is not interchangeable with the 132" or 148" lengths some long-bed machines use. Look on the inside of the belt for a direction arrow before mounting; if there is none, the joint runs in either direction. Track the belt at low speed with no load before you start grinding, and use a dedicated metal-rated dust collector or wet collection; never mix steel dust with wood dust in one collector.
How to get the most out of it
- Give ceramic and zirconia real pressure. These grains micro-fracture under load. Light contact rounds the grain, the belt glazes, and the heat goes into the part instead of the chips. Blued stainless is the classic sign of a ceramic belt being run too light.
- Keep the part moving. Dwelling in one spot heats a small area and discolours stainless. Steady traverse spreads the heat along the belt and the workpiece.
- Slow down for aluminum, speed up for steel. Aluminum loads any belt; a lower belt speed, the zirconia+ grinding aid or a grease stick on the running belt keeps the grain clear.
- Run wet where the machine is built for it. The Y-weight polyester and poly-cotton backings tolerate coolant, which lowers part temperature and keeps fine belts from loading.
- Change grain at 120 grit. Do the heavy work with ceramic or zirconia, then finish with aluminum oxide from 150 up. Zirconia above 120 costs more and finishes worse than aluminum oxide.
- Store a fourteen-foot belt hanging on a large-radius peg or loosely coiled, away from humidity and sunlight. A cloth belt left folded takes a set that thumps through the contact wheel.
Use it for / don't use it for
Use it for
- Weld knockdown and scale removal on carbon steel plate and tube
- Stainless steel grinding, blending and graining (ceramic or zirconia+)
- Aluminum bar, extrusion and casting clean-up (zirconia coarse, aluminum oxide fine, grease stick)
- Hardened and tool steel where a constant cut rate matters (ceramic)
- Deburring laser-cut, plasma-cut and sheared parts
Don't use it for
- Light-duty or underpowered machines that cannot load ceramic or zirconia; the grain glazes instead of cutting
- Fine finishing with zirconia or ceramic; switch to aluminum oxide above 120 grit
- Woodworking with the metal grains; zirconia tears and burns wood that aluminum oxide would sand cleanly
- Dust systems shared with wood dust
Specifications
| Size | 2-1/2" x 168" |
|---|---|
| Abrasive grains | Ceramic (Shredder), zirconia, zirconia+ with grinding aid, aluminum oxide |
| Backing | Y-weight polyester (ceramic, zirconia+), Y-weight poly-cotton (zirconia), X-weight poly-cotton (aluminum oxide) |
| Coat | Closed coat; zirconia+ carries a grinding-aid top coat |
| Joint | Cloth belt joint; check the inside for a direction arrow |
| Grits offered | 24, 36, 40, 50, 60, 80, 100, 120, 150, 180, 220, 320, 400, 600 (varies by grain) |
| Pack quantity | 4 belts, one grain and grit per pack |
| Wet or dry | Both |
| Converted in | Anaheim, California |
| Custom sizes | Any width and length made to order in about 3 days |
Frequently asked questions
Which 2-1/2" x 168" belt is best for stainless steel?
Ceramic for heavy removal and the longest life on stainless, or zirconia+ with grinding aid when heat discolouration is the problem. Both need a rigid grinder and firm pressure to keep fracturing. Finish with aluminum oxide from 150 grit up, since neither ceramic nor zirconia is offered as a fine finishing grain in this size.
What should I use on aluminum with a 2-1/2" x 168" belt?
Zirconia at 40–120 grit for shaping and stock removal, then aluminum oxide from 150 to 600 grit for finishing. Aluminum loads belts quickly, so run a slower belt speed, use a grease stick on the running belt, or choose zirconia+ whose grinding-aid coat resists loading and lowers heat.
Why does zirconia stop at 120 grit?
Zirconia is a fracturing grain that only works well at coarse to medium sizes; above 120 grit the grains are too small to break down usefully and the belt behaves like expensive aluminum oxide. That is why the fine grits in this listing, 150 through 600, are aluminum oxide on X-weight cloth.
What is the difference between zirconia and zirconia+ grinding aid?
The grain is the same. Zirconia+ adds a grinding-aid layer over the resin bond that lubricates the cut and carries heat away from the part. On stainless, steel and other ferrous metals that means cooler grinding, less bluing and longer belt life than plain zirconia. On mild steel with no heat problem, plain zirconia is the lower-cost choice.
Can these belts be run with coolant?
Yes. Every grain in this listing is built on a Y-weight polyester or poly-cotton cloth backing that can be run wet or dry. Wet grinding keeps stainless and aluminum cooler and stops fine belts loading, provided your machine is designed for coolant and the electrics are protected.
How do I know a 2-1/2" x 168" belt fits my grinder?
Measure an old belt end to end around the outside, or check the belt size in the machine manual. Width and length both have to match; most machines accept about 1/4" of variation in length. If your machine takes a length we do not stock, we make custom belts in any size in about 3 days.
Is bulk pricing available on the 4-pack?
Yes. Each pack holds four 2-1/2" x 168" belts of one grain and grit. Production shops that run several grits can call 714-646-3299 or email sales@maverickabrasives.com for case pricing on multiple packs. Orders over $200 ship free.
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