4" x 132" Metalworking Sanding Belts, 6 PACK
4" x 132" Metalworking Sanding Belts, 6 PACK
Available in stock (50000)
A stroke sander is the quiet way to put a straight, even grain on a stainless panel or flatten a sheet of aluminum: the belt runs continuously over a long bed and the operator presses a pad down onto it, so the pressure is light, the heat spreads along 132 inches of belt and the finish is consistent across a big part. These 4" x 132" metalworking belts fit stroke sanders and long-bed edge sanders built for this length, in zirconia for steel, ceramic for stainless and hardened steel, Zirconia+ (Grinding Aid) for stainless and aluminum that heats and loads, and Cloth A/O for the 150–600 grit graining and finishing belts.
We convert them in Anaheim, California on a Y-weight poly-cotton backing with heat-treated grain, so a long loop tracks straight and takes the pad without stretching. Six belts of one grit per pack.
- Zirconia, ceramic, Zirconia+ (Grinding Aid) and cloth aluminum oxide in a 4" x 132" stroke-sander length
- 132" belt loop spreads heat and wear for consistent graining on stainless and aluminum panels
- 24–600 grit: flatten, blend and grain sheet and plate on one machine
- Y-weight poly-cotton cloth tracks straight over long spans and outlasts typical paper or light-cloth belts
- 6 belts of one grit per pack; poly-cotton backing runs wet or dry
- Converted in Anaheim, California; free shipping on orders over $200
Which grain should you run on a stroke sander for metal?
Pad pressure on a stroke sander is lighter than a belt grinder's platen, so grain choice leans toward the grains that cut well under moderate load and stay cool. Pick by the metal.
- Zirconia+ (Grinding Aid): the first belt to reach for on stainless sheet, aluminum panels and titanium. It is zirconia with a grinding-aid top coat over the aid in the resin, so it cuts cooler and resists loading, which is exactly what a long pass under a pad needs. Use it for the coarse and medium graining passes on stainless.
- Zirconia: carbon and mild steel plate, cast iron and general fabrication. Self-sharpens under moderate-to-heavy pad pressure; offered 24–120 grit. The belt for flattening steel plate and blending welds on a stroke sander.
- Ceramic: the orange-red belt for stainless plate, hardened and tool steel. It needs firm pressure to keep fracturing, which means a hard pad pressed firmly; run with a soft pad or a light hand it glazes and heats the panel. Best for heavy stock removal on stainless plate where you can bear down.
- Cloth A/O: heat-treated aluminum oxide, forgiving at light pad pressure, right for brass, bronze and soft aluminum and for every 150, 180, 220, 320, 400 and 600 grit belt in this listing. This is the grain that produces the final directional grain on stainless and aluminum.
Zirconia and ceramic above 120 grit give a bright scratch rather than a finish. Do the graining passes on Cloth A/O, then a non-woven belt for a uniform satin.
Grit guide for graining and flattening panels on a 4" x 132"
| Grit | Steel and stainless | Aluminum |
|---|---|---|
| 24–36 | Flattening plate, weld leveling (zirconia or ceramic, hard pad) | Heavy castings only |
| 40–60 | Removing weld marks and heavy scratches from sheet | First belt on plate, with grinding aid or grease stick |
| 80–120 | Blending, first graining pass on stainless | Main working range on sheet and panels |
| 150–220 | Directional grain, matching a No. 4 style finish (Cloth A/O) | Finish before anodize or paint |
| 320–600 | Fine grain, pre-polish (Cloth A/O) | Pre-polish before buffing |
Grain a stainless panel 80 Zirconia+ (Grinding Aid), 120, then 180 and 220 Cloth A/O, every pass in the same direction and never skipping more than one grade. Aluminum sheet goes 80, 120, 220 Cloth A/O with the grease stick on the belt.
What machines does a 4" x 132" belt fit?
- Horizontal stroke sanders built around a 4" x 132" belt, the long-bed machines where the operator presses a hand pad onto the moving belt over the workpiece.
- Long-bed oscillating edge sanders that list a 4" x 132" belt.
- Backstand and shop-built long-belt machines set up for this length.
Long belt lengths vary widely between makes, so measure or check the manual before ordering; we also stock 4" x 106" and other long lengths. Mounting: release tension, thread the belt over the drums with any printed arrow (check the inside) pointing in the direction of rotation, re-tension and jog the machine while adjusting tracking until the belt runs centred on both drums. If no arrow is printed the joint runs either way. Lengths we do not list are made to order in about 3 days.
How to get the most out of it
- Separate the metal dust. Stroke sanders are woodworking machines by origin and usually share a wood-dust collector; steel sparks into that system is a fire risk. Blank off the wood line and use a dedicated metal-rated or wet collector.
- Keep the pad moving. Press the pad down and draw it steadily along the panel; never stop with the pad down or the belt will dig a low spot and blue stainless. Overlap strokes by half the pad width.
- Match pad hardness to the grain. Use a hard pad and firm pressure with zirconia and ceramic so the grain keeps fracturing; a softer pad and lighter pressure with Cloth A/O for the final grain.
- Grain in one direction only. A directional finish on stainless or aluminum shows every cross stroke; run every grit the same way and let the belt speed do the work.
- Lubricate aluminum. Rub a grease stick on the running belt, use the grinding-aid or Cloth A/O belts and light pad pressure, and clean the belt with a crepe belt eraser as soon as it loads.
- Run wet if the machine allows. The poly-cotton backing tolerates coolant; a mist keeps stainless cool through long graining passes. Most stroke sanders run dry.
- Store long belts hanging. A 132" belt that sits folded takes a set and thumps under the pad. Hang spares on a wide peg or roll them loosely, dry and out of sunlight, and warm cold belts before running.
Use it for / don't use it for
Use it for
- Directional graining on stainless panels, doors, counters and appliance fronts
- Flattening and finishing aluminum sheet, plate and sign panels with the grinding-aid and aluminum oxide belts
- Blending welds and removing scratches from large steel and stainless sheet
- Long edge finishing on plate and extrusions on a long-bed edge sander
- Brass and bronze sheet finishing
- Wood panels and doors with the Cloth A/O belts
Don't use it for
- Running steel into a shared wood-dust system
- Finishing with zirconia or ceramic above 120 grit; switch to Cloth A/O or non-woven
- Ceramic with a soft pad or light hand; it glazes and heats the panel
- Machines that take a different belt length; measure first
Specifications
| Size | 4" x 132" |
|---|---|
| Abrasive grains | Ceramic, Zirconia, Zirconia+ (Grinding Aid), Cloth A/O (heat-treated aluminum oxide) |
| Backing | Y-weight poly-cotton cloth |
| Coat | Closed coat, resin bond |
| Joint | Taped cloth joint; check inside for a direction arrow |
| Grits offered | 24, 36, 40, 50, 60, 80, 100, 120, 150, 180, 220, 320, 400, 600 (range varies by grain; zirconia 24–120) |
| Pack quantity | 6 belts, one grain and grit per pack |
| Wet or dry | Both; poly-cotton backing tolerates coolant |
| Fits | Stroke sanders and long-bed edge sanders that take a 4" x 132" belt |
| Converted in | Anaheim, California |
| Custom sizes | Any width and length made to order in about 3 days |
Frequently asked questions
What kind of machine takes a 4" x 132" belt?
Mainly horizontal stroke sanders, the long-bed machines where a continuous belt runs over the work and the operator presses a hand pad onto it, plus some long-bed oscillating edge sanders and shop-built long-belt machines. Long lengths vary between makes, so confirm 4" x 132" in your manual or measure an old belt before ordering.
How do I grain a stainless steel panel on a stroke sander?
Start with Zirconia+ (Grinding Aid) at 80 grit, then 120, then 180 and 220 Cloth A/O, pressing the pad in one direction only and overlapping strokes by half the pad width. Never stop with the pad down. Finish with a fine non-woven belt if you want a uniform satin. The grinding-aid coat keeps the stainless from bluing on long passes.
Is ceramic worth using on a stroke sander?
Only for heavy stock removal on stainless or hardened plate where you use a hard pad and bear down. Ceramic grain keeps cutting only under firm pressure; under a soft pad or a light hand it glazes and heats the panel. For most graining and blending work on a stroke sander, Zirconia+ (Grinding Aid) and Cloth A/O are the better choice.
Which belt should I use to flatten aluminum sheet?
Use the Zirconia+ (Grinding Aid) belt or Cloth A/O at 80 grit with a grease stick rubbed on the running belt, then 120 and 220 Cloth A/O. Aluminum packs into a dry belt in seconds, so keep pad pressure light, keep the pad moving and clean the belt with a crepe belt eraser as soon as it starts to load or squeal.
Can I run metal on a stroke sander that is used for wood?
Yes, with a metal-grain belt and a separated dust system. Stroke sanders are usually ducted to a wood-dust collector, and steel sparks into that duct can start a fire, so blank off the wood line and use a dedicated metal-rated or wet collector. Keep separate belts for wood and metal.
How should I store 4" x 132" belts?
Hang them on a wide peg or roll them loosely; a long cloth belt that sits folded develops a set that thumps under the pad. Keep them dry and out of direct sunlight, and let a cold belt warm to room temperature before running it. Each pack holds 6 belts of one grain and one grit.
Do you make other long lengths, and is bulk pricing available?
Yes. We convert any width and length in Anaheim, California in about 3 days, so a stroke sander or edge sander with an unusual belt length is not a problem. Orders over $200 ship free, and case quantities for production finishing shops can be quoted by calling 714-646-3299 or emailing sales@maverickabrasives.com.
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