Grindex · Cutting, Grinding & Finishing Abrasives
Grindex grinding discs are 6 mm Type 27 depressed-centre bonded abrasive wheels for portable weld grinding and notching, available 100–230 mm in separate formulations for metal, for stainless steel and INOX, and in a fine-back version for both.
Price on request. Supplied from Abu Dhabi across the UAE and GCC — quotations include confirmed lead time and delivery terms.
Where it is used
Features
Type 27 is the depressed-centre form that lets a disc be worked at an angle to the surface without the clamping flange fouling the work. At 6 mm it is built to take the side loading that grinding imposes — which is exactly what a 3 mm cutting disc is not built for.
Discs for metal and steel, discs for stainless steel and INOX, and a fine-back range for both metal and stainless grinding. The stainless version matters because iron, sulfur and chlorine transferred from an ordinary abrasive contaminate an austenitic surface and cause rust staining and potential corrosion initiation.
Portable grinding is a manual process where the operator manipulates the machine by hand, predominantly in weld grinding and notching. Grindex states the discs are engineered to offer a combination of performance and value, and the range is built around the Type 27 portable grinder.
100 × 6 × 16 mm, and 115, 125, 180 and 230 mm with a 22.23 mm bore — covering every common angle grinder from a 4″ one-handed machine to a 9″ two-handed one.
Maximum rotational speed falls as diameter rises: 15300 rpm at 100 mm, 13300 at 115, 12200 at 125, 8600 at 180 and 6700 at 230 mm. The grinder’s no-load speed must never exceed the disc’s rating.
Used on electric angle grinders, pneumatic grinders, electric straight grinders and high frequency machines — so one specification covers a workshop running a mix.
Technical data
Published manufacturer specifications. Where a figure affects your welding procedure, confirm it against the instruction manual for your specific configuration.
| 100 × 6 × 16 mm (4 × 1/4 × 5/8″) | Max 15300 rpm |
|---|---|
| 115 × 6 × 22.23 mm (4-1/2 × 1/4 × 7/8″) | Max 13300 rpm |
| 125 × 6 × 22.23 mm (5 × 1/4 × 7/8″) | Max 12200 rpm |
| 180 × 6 × 22.23 mm (7 × 1/4 × 7/8″) | Max 8600 rpm |
| 230 × 6 × 22.23 mm (9 × 1/4 × 7/8″) | Max 6700 rpm |
| Sizes available | 100, 115, 125, 180 and 230 mm × 6 mm |
|---|---|
| Speed ratings | As the metal range — 15300 rpm at 100 mm down to 6700 rpm at 230 mm |
| Why a separate formulation | Free of the iron, sulfur and chlorine that would contaminate an austenitic stainless surface |
| Sizes available | 100, 115, 125, 180 and 230 mm × 6 mm, Type 27 |
|---|---|
| Speed ratings | 15300 rpm at 100 mm down to 6700 rpm at 230 mm |
| Electric angle grinders | Suitable |
|---|---|
| Pneumatic grinders | Suitable |
| Electric straight grinders | Suitable |
| High frequency machines | Suitable |
Ordering information
Quote these part numbers on your enquiry or LPO to guarantee the exact configuration. If you are unsure which variant suits your application, send us the joint details and we will specify it.
| Description | Part number | Grade | Suitability | Max rpm | Pieces per box |
|---|---|---|---|---|---|
| 100 x 6.0 x 16.0 mm (4 in) 16.0 mm bore, not 22.23 mm — for a 100 mm grinder, and it will not fit a standard 115 mm machine spindle. Stocked, but no data sheet held, so the code and speed are confirmed with your quotation. | Code on request | A22R | Metal | On request | On request |
| 115 x 6.0 x 22.23 mm (4.5 in) | 66252850706 | A22R | Metal | 13 300 | 40 |
| 115 x 6.0 x 22.23 mm (4.5 in) | 66252850707 | A22R | SS / Inox | 13 300 | 40 |
| 125 x 6.0 x 22.23 mm (5 in) Pack quantity as printed on the data sheet — see footnote 3. No SS/Inox version is stocked in this diameter. | 66252850708 | A22R | Metal | 12 250 | 100 |
| 180 x 6.0 x 22.23 mm (7 in) | 66252850709 | A22R | Metal | 8 500 | 20 |
| 180 x 6.0 x 22.23 mm (7 in) | 66252850710 | A22R | SS / Inox | 8 500 | 20 |
| Description | Part number |
|---|---|
| Grindex cutting discs, 3 mm, 100–400 mm | 66252850694 |
| Grindex flap discs, 100–178 mm | See page |
| Grindex coated fibre discs, 100–178 mm | See page |
Operating essentials
Match the disc to the machine: the grinder’s no-load speed must not exceed the disc’s maximum rotational speed. A 100 mm disc rated 15300 rpm must never be fitted to a machine running faster, and a large disc on a small fast grinder is the classic wheel-burst scenario.
A Type 27 grinding disc is designed to be worked at an angle to the surface, typically 15–30°. Working flat loads the whole face and glazes the wheel; working too steeply concentrates heat and digs in.
Use the stainless/INOX discs on austenitic stainless, and keep them physically separate from discs used on carbon steel. Cross-contamination from a shared disc, or even a shared bench, transfers free iron into the stainless surface and causes rust staining later.
Grinding disturbs the chrome oxide passive layer and can embed contamination. Where corrosion resistance matters, the ground area should be passivated afterwards — ASTM A380 treats grinding as one of the conditions requiring it.
Downloads
Frequently asked
Type 27 is the depressed-centre form, where the centre of the disc is recessed so the mounting flange sits below the working face. That lets the disc be worked at an angle to the surface without the flange fouling the work, which is what makes it the standard form for portable weld grinding.
It is the wrong tool. A grinding disc is 6 mm and designed for stock removal at an angle; a cutting disc is 3 mm and designed for edge loading at 90°. Using a 6 mm grinding disc to cut is slow and wasteful, and using a 3 mm cutting disc to grind is dangerous because of the side load.
Because abrasives for general steel can transfer iron, sulfur and chlorine into the stainless surface. That contamination causes rust staining and can initiate corrosion in service, which defeats the point of specifying stainless at all. Grindex supplies a dedicated stainless/INOX formulation.
Grindex lists fine back products as a separate range for use on both metal and stainless steel grinding, in the same Type 27 form and the same 100–230 mm sizes. Ask us which range suits your finish requirement.
A 230 mm disc is rated to a maximum of 6700 rpm. The grinder’s no-load speed must not exceed that. Smaller discs allow higher speeds — 15300 rpm at 100 mm, 13300 at 115 mm, 12200 at 125 mm and 8600 at 180 mm.
Yes — the range is listed for electric angle grinders, pneumatic grinders, electric straight grinders and high frequency machines. Check the machine’s speed against the disc rating in every case.
POFIS supplies the Grindex abrasive range from Abu Dhabi across the UAE and GCC. Request a quotation on this page or email weldiv@pofis.ae with the diameter, material and quantity you need.
Procurement & supply
The Grindex Grinding Discs is supplied by Perfect Oilfield & Industrial Supply LLC from Abu Dhabi across the UAE and GCC. The information below covers what procurement and QA/QC departments normally need before raising a purchase order.
Stock items dispatch from Abu Dhabi within 24–48 hours. Indent items are quoted with a confirmed lead time at the time of offer.
POFIS is an approved ADNOC vendor and is listed on the approved vendor lists (AVL) of major operators and EPC contractors across the GCC. We can complete supplier registration and prequalification documentation on request.
Standard credit terms are available to registered corporate accounts. LPO, LC and advance payment are all accepted.
Delivery across the UAE and the wider GCC. Quotations can be issued on EXW, FOB, CIF or DDP terms to suit your project.
Full manufacturer warranty applies. POFIS handles warranty claims and replacement on your behalf.
Technical support, product selection advice and resupply from our Abu Dhabi welding division.
Price on request
Send the form and the POFIS welding division replies with pricing, confirmed lead time, delivery terms and availability. Tell us who you are and what the job is, so the reply can be specific to it rather than a catalogue price list.
