CGW 39933 is a 2-inch-diameter aluminum oxide flap wheel with a 1-inch face, a 1/4-inch shank and 80-grit abrasive. The important buying check is the complete wheel size, not just the shank. A tool that accepts a smaller 1/4-inch-shank wheel is not automatically approved for this larger wheel. Confirm the tool’s accessory limits, the working clearance and the exact part number before ordering the ten-pack.
The manufacturer’s Aluminum Oxide Flap Wheels specification table lists 39933 at 25,000 RPM and a box quantity of 10. Arc Weld lists the same part as a pack of ten. This guide helps turn those catalog details into an ordering decision. It does not approve a particular tool-and-wheel combination or replace the instructions supplied with either product.
Read all three dimensions
The size 2 x 1 x 1/4 describes three separate checks: wheel diameter, wheel face width and shank diameter. Keep each one on the requisition. Reducing the description to “quarter-inch flap wheel” drops the dimensions that determine whether the abrasive can reach the work and whether the tool permits that accessory size.
- Diameter: 2 inches. Check the available space around the wheel and the tool maker’s allowed accessory diameter.
- Face width: 1 inch. Check the width of the surface or opening you need to reach.
- Shank: 1/4 inch. Confirm the required mounting arrangement against the tool instructions rather than improvising an adapter.
- Grit: 80. Keep the grit on the order and confirm the required finish separately.
- Manufacturer part: 39933. Match the number on the seller listing and the delivered package.
A measurement of the opening alone does not establish a safe working setup. The tool body, mounting position and surrounding fixture can limit access too. If the job needs a very small wheel to enter a recess, moving to a 2-inch wheel may defeat the reason for using a shank-mounted abrasive in the first place. Establish the permitted setup before buying a production quantity.
A similar-looking CGW wheel may be a different item
CGW’s table includes several nearby numbers. Part 39932 has the same listed 2 x 1 x 1/4 size but 60 grit; 39934 has that size with 120 grit. Part 39926 is 80 grit and 2 inches in diameter, but its face width is 1/2 inch. These are useful identification differences, not automatic substitution recommendations.
The table also separates 1/4-inch-shank wheels from 1/4-20-shank versions. The extra “-20” is part of the mounting designation, not an optional detail to leave off an order. For example, the table places 39990, also listed at 2 x 1 x 1/4-20 and 80 grit, in the other shank group. Do not exchange those part numbers based only on the visible abrasive shape.
WSP’s existing CGW 39908 buying guide concerns a smaller 1-inch, 60-grit wheel. Its part identity is different from 39933. Use the original manufacturer row for the item you are ordering rather than carrying a size or speed value over from a related article.
Keep the speed limit separate from the operating plan
The CGW row for 39933 lists 25,000 RPM. Treat that catalog limit as a constraint, not a recommended operating speed for every material and tool. Check the supplied wheel marking and instructions together with the tool maker’s accessory requirements. A shared shank diameter does not resolve a speed mismatch.
The manufacturer table illustrates why copying a number from another wheel is risky: the smaller 39908 row lists 30,000 RPM, while 39933 lists 25,000 RPM. If the tool’s operating conditions, accessory approval or the wheel’s marking are unclear, stop the selection process and obtain the needed manufacturer information. This article supplies no adapter approval, mounting-depth instruction or permission to alter guards.
Choose a documented application, then confirm the finish
CGW lists this aluminum oxide flap-wheel family for steel, stainless steel, iron, brass, aluminum, plastic, fiberglass, wood and glass. That manufacturer application list is broader than an approval for a particular coated part or controlled-finish job. Identify the actual base material, coating and required result before deciding whether this wheel belongs in the process.
An 80-grit label does not promise a specified surface roughness or a finished cosmetic appearance. Where the drawing, customer requirement or shop procedure controls the result, use that requirement to evaluate the abrasive selection. WSP’s guide to choosing abrasives for weld cleanup provides broader selection context; it does not replace the current wheel and tool instructions.
Check the ten-pack before placing the order
Arc Weld’s listing identifies the selling unit as a pack of ten, and the manufacturer table gives a box quantity of ten. Keep that count visible when comparing offers. A single-wheel offer and a ten-pack can describe the same part number while representing very different order quantities.
- Write the full requirement: CGW 39933, 2 x 1 x 1/4 inch, 80 grit, pack of ten.
- Confirm that the selected tool and mounting arrangement are approved for this wheel size and speed limit.
- Check the current listing’s package, availability and purchase option at checkout; an article is not a stock or delivery promise.
- On receipt, compare the package identification, count and supplied instructions with the order before releasing the wheels for use.
If those checks match your job, check the CGW 39933 ten-pack at Arc Weld. If they do not match, keep the requirement open instead of ordering a similar-looking wheel and hoping to adapt it later.
For the people and craft behind shop work, explore Arc Life.
Sources and scope
Specifications above come from CGW’s Aluminum Oxide Flap Wheels table, including the exact 39933 row and neighboring rows used for identification. The selling-unit check comes from the Arc Weld product listing. This is an evidence-based buying checklist, not a hands-on test, a lifetime comparison or a tool-specific compatibility certification. Product markings and current manufacturer instructions govern use.
Leave a Reply