1" x 42" Surface Conditioning Belts (Non-Woven), 12 PACK

A 1" x 42" belt sander is the deburring station in a lot of machine shops, tool rooms and sharpening services, and this is the belt that finishes the part after the coated belt has done the cutting. On a Kalamazoo 1SM, or the Grizzly H8192 and JET 577003 our original listing named, a non-woven belt breaks edges on machined stainless and aluminum, cleans scale and heat tint, and leaves a uniform satin without taking a toleranced part out of spec.

The extra length over a 1" x 30" belt means more web in the loop, so heat spreads out and the belt lasts longer under continuous use. We convert them in Anaheim, California, 12 belts of one grade per pack, in Coarse (brown), Medium (maroon), Very Fine (blue) and Ultra Fine (grey).

• Fits Kalamazoo 1SM, Grizzly H8192, JET 577003 and other 1" x 42" bench sanders
• Aluminum oxide grain in a nylon web: deburrs and blends, holds part dimensions
• Coarse, Medium, Very Fine and Ultra Fine, brown through grey, 40-60 to 320-400 grit finishes
• 42" loop runs cooler and lasts longer than shorter belts in production use
• Reinforced scrim backing tracks on platen and contact wheel alike
• 12 belts per pack; free shipping on orders over $200

Which grade should you run for deburring and finishing on a 1" x 42"?

All four grades share the same web and differ in grain size. Choose the grade by the finish you need to hand off, and step through the grades only when the previous scratch is still visible.

• Coarse (brown, 40-60 grit equivalent): heavy burrs on sawn, sheared and laser-cut stock, mill scale and rust on hot-rolled steel, old coatings on tooling. It removes noticeable material, so on a finished machined part use it sparingly or skip it.
• Medium (maroon, 80-120 grit equivalent): the production grade. Edge breaking on machined parts, blending the scratch from an 80-120 grit coated belt, removing heat tint from stainless welds and tempered tool steel. Most shops keep Medium mounted.
• Very Fine (blue, 180-240 grit equivalent): a #4-style directional satin on stainless fittings, sheet and bar, and a clean finish on titanium and aluminum parts that stay visible in service. Use after 150-220 grit.
• Ultra Fine (grey, 320-400 grit equivalent): fine satin and pre-polish. It is the last belt before a buffing wheel and the grade for aluminum that will be anodized. We are one of the few converters offering it in belt form.

For a sharpening service finishing chisels, plane irons and shop knives, Medium on the backs and Very Fine on the bevels leaves a clean, even surface. Keep the cutting edge itself off the belt; the web rounds an apex.

Grit guide: grade, colour and equivalent finish

These are finish equivalents, not removal rates. The web cuts far slower than a coated belt of the same number, which is why it can deburr a machined part without changing a dimension. Use the coated belt to make the part and the non-woven belt to finish it.

Which machines take a 1" x 42" belt?

• Kalamazoo Industries 1SM 1" x 42" belt sander, the industrial bench machine this size is best known for.
• Grizzly H8192 and JET 577003, both named on our original listing for this belt.
• Other 1" x 42" bench belt sanders and belt/disc combination machines. If the machine runs a 1" x 42" coated belt, it runs this one.

Note the length: 1" x 42" and 1" x 30" are both common bench sizes and they are not interchangeable. Measure the belt you are replacing if you are unsure. To mount, release the tension, slide the belt over the wheels with any arrow on the inside pointing in the running direction, re-tension and adjust tracking until the belt sits centred on the platen. Because the web is thicker than cloth, expect a small tracking correction when you switch from a coated belt.

How to get the most out of it

1. Slow the belt where you can. Non-woven finishes best below coated-belt speed. On a fixed-speed machine such as most 1" x 42" sanders, use lighter pressure and shorter contact to compensate.
2. Light to moderate pressure. Let the web do the work. Pressing hard folds the fibres against the platen, heats the part and shreds the belt. Coarse in particular will remove material if leaned on.
3. Platen for flats, slack for contours. Run flat faces and edges on the platen for an even satin; use the unsupported belt above it, or the contact wheel, for radii and curved parts.
4. Keep the part moving in one direction. For a linear satin, draw the part across the belt in straight, overlapping strokes. Dwelling leaves a bright patch.
5. Come in from 120-220 grit. Non-woven refines the last coated scratch; it does not remove 36-60 grit marks.
6. Lubricate lightly on aluminum. A trace of oil or wax on the belt stops soft alloys smearing into the web. Steel, stainless and titanium run dry.
7. Store belts hung or loosely rolled, away from solvent, sunlight and damp air, and let a cold belt warm before running it.

Use it for / don't use it for

Use it for

• Edge breaking and burr removal on machined, sheared and laser-cut stainless, steel, aluminum and titanium
• Cleaning heat tint, mill scale and light rust from small parts and weldments
• Blending coated-belt scratches into a uniform satin before shipping, plating or anodizing
• Refining the backs and bevels of chisels, plane irons and shop tools
• Finishing plastics, fiberglass and non-ferrous alloys without loading

Don't use it for

• Stock removal, weld grinding or shaping; that is a coated belt's job
• Chasing out coarse scratches from 36-60 grit belts
• Sharpening or deburring a finished cutting edge; the web rounds the apex
• Producing a mirror; go from Ultra Fine to a buffing wheel and compound
• Heavy pressure or dwell, which tears the web and heats the part

Specifications

Frequently asked questions

Related products and guides

• All surface conditioning belts, discs and flap discs
• 1" x 42" coated sanding belts, 12 pack
• 1" x 30" Surface Conditioning Belts, 12 pack
• Knife making belts and supplies
• Custom sanding belts made to order in about 3 days