DeWalt cordless circular saws come in two main bore-size families, and it’s important to get this right. Some models use 20mm bore (standard metric) whilst others use 16mm. The DCS570 is particularly different with its 184mm diameter and 16mm bore combination. This guide tells you exactly which blade fits your DeWalt model.
DeWalt Cordless Circular Saw Models & Blade Specs
| Model | Blade Diameter | Bore Size | Battery Platform |
|---|---|---|---|
| DCS391 | 165mm | 20mm | 18V XR |
| DCS565 | 165mm | 20mm | 18V XR |
| DCS570 | 184mm | 16mm | 18V XR |
The DCS391 and DCS565 both use standard 165mm diameter with 20mm bore — the most common metric spec in the UK market. The DCS570 is the odd one: 184mm diameter with 16mm bore, which is less common in the market and needs careful blade selection.
Best Circular Saw Blades for DeWalt Saws
For DCS391 & DCS565 (165mm × 20mm)
Best General Purpose: 40-Tooth Thin Kerf
A 40-tooth thin kerf blade is the ideal everyday blade for these saws. It cuts wood, plywood, and softwood cleanly without overloading the motor. DeWalt OEM blades work well, as do Bosch Optiline and budget-friendly Diablo options.
Buy 40T thin kerf circular saw blades on Amazon UK
Best Fine Finish: 60-Tooth Thin Kerf
For melamine, laminate, or joinery work. A 60-tooth thin kerf blade makes the cleanest cut but removes material more slowly.
Buy 60T thin kerf circular saw blades on Amazon UK
Best for Framing: 24-Tooth Coarse
Fast ripping and rough cuts. A 24-tooth standard kerf blade is more durable for site work than thin kerf.
Buy 24T framing blades on Amazon UK
For DCS570 (184mm × 16mm) — Be Careful
The DCS570 is a larger saw but uses a smaller (16mm) bore. This is unusual and means you need to hunt specifically for 184mm diameter blades. They’re less common than 165mm.
Buy 184mm circular saw blades on Amazon UK
If you can’t find a 184mm blade locally, you have two options:
- Use a 165mm blade in a 184mm-rated saw (no — this is too small and unsafe)
- Use a 16mm-bore reduction ring with a 20mm-bore 184mm blade (if one exists — unlikely in the UK market)
The honest answer: the DCS570 is an outlier in DeWalt’s range. Check the model’s manual or phone a DeWalt stockist before buying blades for it.
DeWalt OEM vs Third-Party Blades
DeWalt branded blades are solid performers but often pricier than equivalent third-party options. Bosch Optiline is often recommended as a better value alternative for the same quality. Diablo (owned by Freud) offers aggressive pricing on a range that competes well with DeWalt’s specs.
Safety & Storage
Always check that a new blade fits snugly on the arbor — there should be no lateral play or wobble when the blade is locked. Keep blades in a dry place (wet storage can cause rust). Never force a blade on or off the arbor; if it won’t fit, the bore size is wrong.
Related Pages
See the full circular saw blade compatibility guide for detailed information on bore reduction rings and cross-brand compatibility. For battery and charger compatibility, visit the DeWalt 20V MAX platform page.
Frequently Asked Questions
What bore size does my DCS391 use?
20mm bore. This is the most common metric spec and blades are widely available.
Why is the DCS570 so hard to find blades for?
The DCS570 uses a 184mm diameter with 16mm bore. Most UK suppliers stock 165mm, 190mm, 210mm, etc. — but 184mm is less common. Check with specialist tool suppliers or order online before buying the saw.
Can I use a Makita blade in my DeWalt DCS391?
Yes, if the bore sizes match. A Makita 165mm × 20mm blade will fit your DCS391 (165mm × 20mm). Brand doesn’t matter — compatibility specs do.
What’s the best DeWalt circular saw blade for general work?
A 40-tooth thin kerf in 165mm diameter × 20mm bore. DeWalt OEM or Bosch Optiline are equally good.