A tile cutting disc has one job that a general masonry blade cannot do: go through hard, glassy porcelain without chipping the glaze. Diamdisc makes turbo and continuous-rim tile cutting discs from 105 mm to 230 mm in our HOWOLL factory in Linyi, hot-pressed with a soft bond and fine diamond grit. The 115 mm turbo porcelain disc is our biggest export line. We supply tile shops, tool wholesalers and private-label brands from 300 pieces per model.
Our tile cutting discs by size
Pick the disc by the grinder or saw it goes on. All four fit a 22.23 mm spindle, and we supply a 20 mm reducer ring for tile saws on request. Part of our wider range of diamond blades and cutting discs.
115 mm (4½”) turbo porcelain tile cutting disc
The tile cutting disc for angle grinders that most UK tilers carry. Super-thin 1.2 mm turbo rim, 10 mm segment height, dry or wet. Also available with an M14 flange for flush cutting.
125 mm (5″) diamond tile cutting disc
Same rim as the 115 mm for 125 mm grinders, with a little more depth of cut for thicker floor tiles and skirting.
180 mm (7″) wet tile saw blade
Continuous rim for bench wet saws. Replaces the blade that comes with budget wet cutters and leaves a cleaner edge on polished porcelain.
230 mm (9″) porcelain blade for 20 mm slabs
Turbo rim for 9-inch grinders cutting 20 mm porcelain paving. Cuts a full slab in one pass with water, or in two passes dry.
Why porcelain chips, and what the disc has to do about it
Porcelain is fired until it is almost glass. A blade with a hard bond and coarse diamond, the kind made for concrete, cannot wear fast enough to expose fresh diamond, so it rubs instead of cutting, overheats, and the glaze breaks out in chips along the edge. A porcelain cutting disc solves this in four ways:
- Soft bond, fine grit. The bond releases worn diamond quickly, so the rim stays sharp and does not glaze over.
- Thin rim. Our tile discs run 1.2 mm at 115 mm and 1.6 mm at 230 mm. A narrower kerf removes less material and loads the glaze less.
- Continuous or fine turbo edge. No gullets means no impact on the glaze each revolution, which is what makes segmented blades chip tiles.
- Technique. Cut face up, score a shallow pass first, then cut through, and keep water on the rim for polished tiles. A brand-new blade still chips if the grinder is pushed too fast.
Cutting 20 mm porcelain paving slabs
Outdoor porcelain paving at 20 mm thick is now the standard patio material in the UK, and it is the hardest tile a porcelain tile cutter blade will meet. A 115 mm disc only reaches about 30 mm deep, so landscapers use a 230 mm turbo blade on a 9-inch grinder, or a 250–300 mm blade on a wet bridge saw for long runs. Cut wet where you can. If you cut dry, make the cut in two or three passes and let the blade spin free between them so it cools. Dry cutting porcelain releases silica dust, so the UK Health and Safety Executive expects water suppression or an M-class extractor plus an FFP3 mask on site. We build our 230 mm porcelain blade with a 10 mm segment height for this work, and can mark a maximum tile thickness on the label for your packaging.
Turbo or continuous rim for tiles?
| Continuous rim | Turbo rim | |
|---|---|---|
| Edge finish | Cleanest, for polished and glazed tiles | Very clean on matt porcelain, slight edge wear on polished |
| Cutting speed | Slow | Fast |
| Wet or dry | Wet preferred | Dry or wet |
| Best on | Marble, glass mosaic, polished porcelain, wet saws | Porcelain floor tiles, 20 mm paving, granite, angle grinders |
| Diamdisc models | 180 mm wet saw blade; 115 mm on request | 115, 125, 230 mm tile discs |
Most angle grinder tile blades sold in the UK are turbo rim because they cope with both porcelain and the odd cut in brick or stone. A tile blade with a segmented rim is a compromise and we do not recommend one for porcelain.
Typical specification: 115 mm turbo porcelain disc
| Diameter | 115 mm (4½”) |
| Bore | 22.23 mm (7/8″), 20 mm reducer ring available |
| Rim thickness | 1.2 mm |
| Segment height | 10 mm |
| Rim type | Super-thin turbo |
| Process | Hot-pressed sintered |
| Max speed | 80 m/s · 13,200 rpm (per factory test record) |
| Wet / dry | Dry; wet recommended for polished porcelain and 20 mm slabs |
| Cuts | Porcelain, ceramic, 20 mm porcelain paving, granite. Not for metal or wood |
| Packing | Blister card or colour box, 10 pcs per inner box, 200 pcs per carton |
Every model ships with its full spec sheet: rim thickness, segment height, maximum speed in m/s and rpm, and the wet or dry rating, so your product listings can carry the numbers most UK retailers leave out.
For importers and tile shops
Minimum order is 300 pieces per standard model, and a first order can mix sizes within the tile range. Your logo is laser-etched on the core free of charge; colour boxes, blister cards and shelf-ready cartons are printed to your artwork. Standard models ship in 15–25 days from Qingdao, and samples of standard discs are free with freight paid by the buyer. See OEM & private label for packaging options, or ask for a quote with the spec of the disc you sell today.
Tile cutting disc FAQ
Which blade cuts 20 mm porcelain slabs without chipping?
On a 9-inch grinder, a 230 mm turbo-rim porcelain blade with a soft bond and a rim no thicker than about 1.6 mm. Cut wet or in two passes dry, face up, with a shallow scoring pass first. For long runs a wet bridge saw with a 250–300 mm continuous-rim blade gives the cleanest edge.
Should I cut porcelain tiles wet or dry?
Wet gives a cleaner edge and longer blade life and keeps silica dust down. Our turbo tile discs are rated for dry use on angle grinders, but on polished porcelain and 20 mm paving we recommend water or at least intermittent cuts so the rim stays cool.
My tile disc has stopped cutting. Is it finished?
Usually not. The rim has glazed over: worn diamond is still held in the bond and the edge has polished smooth. Make a few cuts into a soft abrasive block, a dressing stone or an old brick to expose fresh diamond. If the rim height is down to about 2 mm, the disc is worn out.
Do I need a 115 mm or a 230 mm tile disc?
A 115 mm disc on a 4½-inch grinder handles wall and floor tiles up to about 12 mm and most notches and cut-outs. For 20 mm paving slabs or long straight cuts in thick floor tiles, use a 230 mm disc on a 9-inch grinder or a wet saw.
Can I use a porcelain tile disc on granite?
Yes for occasional cuts. Granite and porcelain both need a soft bond and fine grit, so a turbo tile disc works on granite worktops and sills. For regular stone work choose a blade from our stone cutting range, which has a taller segment for longer life.
What bore size do tile cutting discs have?
22.23 mm (7/8″) for angle grinders is standard across our tile range. Bench wet saws often take 25.4 mm or 20 mm, so the 180 mm wet saw blade is made in those bores, and we include a 20 mm reducer ring with the 115 and 125 mm discs on request.
Get a quote on tile cutting discs
Send the sizes and quantities you need, or the spec sheet of the disc you buy now. Eric Li replies within two working days with price, lead time and a sample plan. Email [email protected] or use the form.