Choosing a T27 4-1/2 In. 100 Grit Flap Disc: Application Fit and Specification Checks

1. Start with your application

The product listing gives this aluminum oxide flap disc these uses:

• Materials: ferrous metal and inox (stainless steel). The description also covers steel, stainless steel and aluminium, plus aluminium alloy grinding and finishing.
• Tasks: weld grinding and weld removal, deburring, rust or paint removal, varnish removal, feathering, and general grinding and clean-up.
• Tools: hand-held grinders.

The listing does not cover other materials, stationary machines or other tool types. If you need any of these, get written confirmation from the supplier first.

2. Check the grit choice

The listing offers grit sizes of 40#, 60#, 80# and 100#, and this item is the 100 grit option. The listing doesn't give performance figures for each grit. Choose the grit based on your own process needs, and test samples if surface finish matters. Note that the packing table on the same listing shows 40#, 60#, 80# and 120#, with no 100# row. Ask the supplier to confirm that 100# is available and how it is packed for the size you need.

3. Match the disc to your grinder

Compare these listed specifications with your equipment:

Your grinder's rated speed must not be higher than the disc's maximum working speed. Also check the arbor fit. The listing gives both a 5/8 in arbor and a 115X22mm model designation, and the packing table lists FA11522 as T29-115X22MM, even though this product is called T27 flat type. Confirm the exact bore, profile (T27 or T29) and item code in writing before you order.

4. Review standards and documents

The listing says the disc is manufactured in compliance with EN13743 and is OSA approved. It lists the certifications as MPA, ISO 9001 and ISO14001. Ask for current copies of these documents for your target market (for example, the US, the Middle East, Europe or Southeast Asia) and check that they cover the exact item you are buying.

5. Confirm commercial and packing terms

The listing shows terms such as a minimum order quantity, a price range, a delivery window, payment methods and packaging (shrink wrap, inner box, carton and pallet, or kraft carton and pallet). Treat these as listing information only, not as a quotation. The packing details also differ: the description says "Sold in Box Quantities of 10", but the table shows 50 pieces per box and 200 per carton for FA11522. Confirm the quantity, packing, price and lead time in a formal quotation. OEM service is listed as acceptable, and the loading port is Tianjin or another port.

When this disc may not fit

• You need heavy stock removal instead of finishing or blending. A coarser grit from the listed range may suit you better.
• Your grinder's speed is higher than the disc's rating, or its spindle doesn't fit the confirmed bore.
• Your work involves materials or tools the listing doesn't cover.
• You need certifications that aren't listed above.

Next step

Send your application, grinder model, required grit, profile and bore, order quantity and target market to Hebei Double Goats Grinding Wheel Manufacturing Co., Ltd. Ask for a written specification confirmation and quotation before you buy.