250mm x 30mm circular saw blade: what to match before the teeth
Updated: October 2026
You are replacing the blade on a table saw, mitre saw, or radial-arm saw marked around 250 mm. A 250mm x 30mm circular saw blade belongs on the arbor only after diameter, bore, and a kerf the riving knife can sit in are settled. The Products Compared editorial team set this order on 16 October 2026 from seven amazon.co.uk listings and Health and Safety Executive guidance. We ran no lab cut. The set is the [250 mm x 30 mm circular saw blade comparison](/hub/saw-accessories/250mm-x-30mm-circular-saw-blade). A qualifying amazon.co.uk purchase can earn us a commission at no extra cost to you.
You are replacing the blade on a table saw, mitre saw, or radial-arm saw marked around 250 mm.
You are replacing the blade on a table saw, mitre saw, or radial-arm saw marked around 250 mm. A 250mm x 30mm circular saw blade belongs on the arbor only after diameter, bore, and a kerf the riving knife can sit in are settled. The Products Compared editorial team set this order on 16 October 2026 from seven amazon.co.uk listings and Health and Safety Executive guidance. We ran no lab cut. The set is the 250 mm x 30 mm circular saw blade comparison. A qualifying amazon.co.uk purchase can earn us a commission at no extra cost to you.
Our top picks
| Badge | Product | Bore stated | Kerf stated | Teeth | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Saxton Blades Saxton 250 mm 100T | 30 mm | 2.6 mm kerf, 1.8 mm plate | 100 | 9.4 | about £21.99 | View offer |
| Alternative |  Toolzone Toolzone PA026 40T and 60T pair | Not stated | Not stated | 40 and 60 | 9.2 | about £11.57 | View offer |
| Best value |  Tech Traders Tech Traders 250 mm 80T | 30 mm | 2.6 mm (plate not stated) | 80 | 9.2 | about £13.99 | View offer |
On this page
Match the diameter and the bore first
The largest blade the saw is marked to take is the ceiling. HSE sheet WIS16 treats a blade under 60 percent of that diameter as a kickback risk. A 250 mm disc on a 250 mm or 254 mm maximum is about 98 percent of the larger figure, so it is not that warning, and it is still a different number from 254 mm and from 255 mm. If the badge and the manual disagree, the plate wins. One Axminster model carries 254 in the name and prints a maximum of 250 mm, which is the 250 mm blade in a 254 mm saw page.
The bore has to be printed or supplied as a named ring. Six listings state 30 mm or name rings for 16, 20, and 25 mm. The Toolzone pair, lowest at £11.57, never prints the bore. Some buyers mention spacers, and the components cell does not name them.
Kerf, plate, and the riving knife
The knife holds the kerf open so the timber does not close on the rising teeth. HSE guidance wants it thicker than the plate, thinner than the kerf, and within 8 mm at table level. A plate thicker than the knife will not pass. Leave the knife on the saw. If a thin plate will not pass it, that blade goes back.
The Saxton 80-tooth, the Tech Traders 80-tooth, and both 100-tooth Saxton blades print a 2.6 mm kerf. The two 100-tooth blades also print a 1.8 mm plate. Tech Traders leaves the plate blank. The DeWalt DT1957 states 1.8 mm item thickness and prints neither kerf nor rake. On a saw that quotes a 2.5 mm knife, a body of 1.8 to 2.4 mm, and a kerf of 2.6 to 3.2 mm, a printed 1.8 mm plate and 2.6 mm kerf can be checked. Tooth count does not repair a missing kerf.
Teeth, then rake
Tooth count trades against feed. Compel's UK chart treats about 24 teeth as a fast rip, about 40 as general, 60 to 80 as a cleaner crosscut, and 80 to 100 for laminate, with a negative hook on a mitre saw. Those are charts, not a test of these pages.
The DeWalt DT1957 title says 48 and the teeth cell says 40. Leave both. They are not an average of 44. Tech Traders at £13.99 and the Saxton 80-tooth at £19.99 share a positive angle and a 2.6 mm kerf. The fine end is a positive 100-tooth at £21.99 and a -5° 100-tooth at £22.99. A positive hook suits timber you push. The -5° listing is the only printed negative rake. This page names no top pick. Jobs are on the best 250 mm blade page.
Speed and what you still check on the saw
PUWER guidance in L114 says you do not exceed the marked speed. It cites BS EN 847-1, and the year on the HSE sheet does not match the 2017 BSI page. None of these listings is shown here to meet that standard. Only the Toolzone pair prints a maximum, 6,000 rpm. One Saxton 80-tooth review describes a Clarke owner caught because no rpm was printed. If your plate says 4,150 rpm, as the Axminster AP254TS manual does, a blank blade cell still needs the blade's own mark. None of the prices we recorded, from £11.57 to £49.59, fills a blank bore. The nut is how to fit a circular saw blade.
Common questions
What if the listing never prints the bore?
Confirm it on the saw and the blade, or buy a page that states the hole. The Toolzone pair at £11.57 never prints the bore. The components cell does not name a ring. A rating of 4.6 from 531 reviews does not state a diameter of hole.
How do kerf and plate relate to the riving knife?
If the numbers are missing, measure the blade in your hand. A 1.8 mm plate and a 2.6 mm kerf can be checked against a manual that quotes those windows. If the plate will not pass, it goes back and the knife stays on.
When do you want 40 teeth, and when 80 or 100?
About 40 teeth is Compel's general band, for a faster feed when the face is not the point. Sixty to 80 is the cleaner crosscut, and 80 to 100 is that chart's laminate band. The DeWalt title and teeth cell disagree at 48 and 40. More teeth mean a slower feed.
What does a negative rake change?
A positive angle pulls timber you push into the blade. The -5° Saxton is the only listing that prints a negative rake, for coated board on a saw you move. At £22.99 with five ratings, that star line is too thin to treat as a longer-lasting edge than the positive 100-tooth file of 396 reviews.
Why does maximum speed belong in the buy?
You stay at or below the speed marked on the saw, and the blade needs its own mark. Only Toolzone prints 6,000 rpm. A Freud 7,600 rpm figure, from a disc outside this set, is not one you copy onto a blank Saxton or DeWalt page.
What will this page not call a winner?
It names no top pick. A star line, a price under £15, or 100 teeth does not settle a blank bore, a 40-versus-48 conflict, or a missing kerf. We also do not claim these blades meet BS EN 847-1.
Related pages
Sources
Public UK sources and the amazon.co.uk listings used for this comparison; last retrieved on 17 October 2026.
- HSE WIS16, circular saw blades (retrieved 17 October 2026)
- HSE, circular rip saws (retrieved 17 October 2026)
- HSE, wood dust (retrieved 17 October 2026)
- HSE, woodworking standards (retrieved 17 October 2026)
- HSE, PUWER ACOP L114 (retrieved 17 October 2026)
- Axminster AP254TS manual (retrieved 17 October 2026)
- UK Workshop, 250 mm blade in a 254 mm saw (retrieved 17 October 2026)
- Saxton UK, negative-rake 250 mm 100 tooth blade (retrieved 17 October 2026)
- amazon.co.uk listings for the seven blades (retrieved 17 October 2026)