1" x 18" Sanding Belts, 24 PACK

A file belt sander works on a contact arm barely wider than the belt itself, so a 1" x 18" belt sees more pressure per square inch than almost any other size we make. That is why we build this size on a Y-weight poly-cotton backing with heat-treated grain: the stiff, tear-resistant cloth holds up under the point loading that shreds light paper and J-weight belts in a few minutes of deburring.

These belts fit pneumatic and electric file belt sanders and small bench belt machines that take a 1" x 18" belt. Choose Cloth A/O for wood, aluminum and fine finishing, Zirconia for steel, Zirconia+ (Grinding Aid) for stainless and anything that burns, and Ceramic for hardened and high-alloy steel. Sold 24 to a pack in grits from 24 to 600.

• Y-weight poly-cotton backing resists tearing under the point pressure of a file belt sander
• Four grains in one size: Cloth A/O, Zirconia, Zirconia+ (Grinding Aid) and Ceramic
• Grits from 24 for weld and casting flash to 600 for pre-polish and edge finishing
• Cloth backing can be run wet or dry on aluminum and stainless
• 24 belts per pack keeps a deburring bench stocked through a production run
• Converted in Anaheim, California; free shipping on orders over $200

Which material should you choose for a 1" x 18" belt?

Match the grain to the metal and to how hard your tool lets you press. A file belt sander concentrates force, which favours the self-sharpening grains, but it is also a light-duty tool, so the toughest grain is not always the right answer.

• Cloth A/O (aluminum oxide): the general-purpose and lowest-cost choice. Use it on wood, plastics, brass and aluminum, and for every grit finer than 120 on any metal, because it is the only grain we stock in this size from 150 through 600. The poly-cotton backing runs wet or dry.
• Zirconia: the pick for mild and carbon steel, weld cleanup and general fabrication. Zirconia micro-fractures under load to expose fresh edges, so it cuts faster and cooler than aluminum oxide as long as you keep firm pressure on it. Available in 24 through 120 grit.
• Zirconia+ (Grinding Aid): the same zirconia grain with a grinding-aid top coat over the resin bond. The coating lubricates the cut and lowers heat, which is what you want on stainless, titanium and aluminum, or any time the part is bluing or the belt is loading. Also 24 through 120 grit.
• Ceramic: our Shredder-type ceramic grain, orange-red in colour. It holds a near-constant cut rate on hardened steel, tool steel, stainless and nickel alloys, but it demands pressure. On a file belt sander the narrow arm supplies that pressure naturally; on a small bench belt with a slack section, press the work firmly or the grain will glaze.

Not every grain is stocked in every grit. The variant selector shows the exact combinations available; if you need a grit and grain we do not list, we can convert it as a custom belt.

Grit guide for deburring and weld blending

Do not skip more than one grade in a sequence. A 36 grit scratch will not come out with 120; go 36 → 60 → 80 → 120 and each step only has to remove the previous pattern.

What machines take a 1" x 18" belt?

• Pneumatic and electric file belt sanders with a 1" contact arm and an 18" belt path. These are the tools this size is bought for: deburring inside corners, weld toes, tube notches and slots that no disc can reach.
• Small bench belt sanders and belt/disc combos built around a 1" x 18" belt, used for small-parts deburring, model making and hobby metalwork.
• Dynafile-type tools: the previous version of this page listed Dynafile. The Dynafile II models in our fitment reference take belts up to 3/4" wide, so confirm your specific arm accepts a 1" belt before ordering; if it needs 1/2" or 3/4", see our narrower file belts.

Mounting notes: release the belt tension arm fully, seat the belt centred on both the drive wheel and the contact arm, then tension and spin the tool by hand to confirm tracking before you pull the trigger. Check the inside of the belt for a direction arrow before mounting; if it has one, run the belt in that direction so the joint does not lift.

How to get the most out of it

1. Start the tool before contact. Bring a running belt to the part, not a stalled belt into the part; starting under load shocks the joint.
2. Use the whole arm. Work off the tip of the contact arm for inside corners and off the flat for blending. Move along the edge so one spot on the belt does not carry all the wear.
3. Give zirconia and ceramic real pressure. These grains only self-sharpen under load. If the belt goes shiny and the part gets hot, you are pressing too lightly or the belt is done.
4. Keep aluminum from loading. Slow the tool down, use Zirconia+ (Grinding Aid) or Cloth A/O, and rub a grease stick on the running belt when it starts to squeal or pack up.
5. Watch the colour on stainless. A straw or blue tint means the part got too hot. Lighten your dwell, move faster and switch to the grinding-aid belt.
6. Run wet where the tool allows it. The poly-cotton backing tolerates coolant, which keeps stainless and aluminum cool and washes swarf out of the grain.
7. Store belts hanging or loosely coiled. A Y-weight belt left folded takes a set that shows up as a bump on the contact arm.

Use it for / don't use it for

Use it for

• Deburring laser-cut, sheared and machined steel and aluminum parts
• Blending weld toes and grinding welds in inside corners and slots
• Notching and chamfering tube and small brackets
• Cleaning castings and removing parting-line flash
• Refining knife bevels and small edges in the 220–600 grit range with Cloth A/O
• Wood, plastics and composites on a small bench belt machine (Cloth A/O)

Don't use it for

• Heavy stock removal on large flat surfaces; a 1" belt is a detail tool and will overheat doing a 4" belt's job
• Ceramic or zirconia at very light pressure; they glaze and burn the part instead of cutting
• Any file belt tool whose arm is narrower than 1"; the belt will ride off the wheel
• Running a belt against its direction arrow

Specifications

Frequently asked questions

Related products and guides

• All narrow sanding belts
• 1/2" x 18" Surface Conditioning Belts for bandfile tools
• 1-1/8" x 21" Sanding Belts, 40 pack
• Grease stick for sanding aluminum and non-ferrous metals
• Custom sanding belts made to order in about 3 days