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115mm or 125mm Makita angle grinder

Updated: 22 October 2026

You are stood in front of two disc stacks, 115 mm and 125 mm, and the amazon.co.uk title in your other hand seems to offer both. A 115 mm or 125 mm Makita angle grinder is a choice of guard and of the wheels you can buy next month, not a choice you can reverse by forcing the larger disc on. The [Makita cordless angle grinder comparison](/hub/tools/makita-cordless-angle-grinder) shows which body states which diameter. Products Compared used the amazon.co.uk captures of 21 October 2026. There is no lab test. If you buy through our links, we may earn a commission at no extra cost to you.

You are stood in front of two disc stacks, 115 mm and 125 mm, and the amazon.co.uk title in your other hand seems to offer both.

Our top picks

Makita Makita DGA454Z

Best overall

Makita Makita DGA454Z
9.1/10about £179.06
View offer
Makita Makita XAG25Z

Alternative

Makita Makita XAG25Z
9.0/10about £124.27
View offer
Laloohome Laloohome 125 mm

Best value

Laloohome Laloohome 125 mm
6.2/10about £29.99
View offer
On this page
  1. 1.What actually changes with the diameter
  2. 2.Choose 115 mm for tighter work
  3. 3.Choose 125 mm as the current UK brushless size
  4. 4.Depth and rpm figures you should not blend

What actually changes with the diameter

The disc, the guard and a modest difference in cut depth are what change. The spindle, the pack and the brand do not. A 115 mm wheel and a 125 mm wheel do not interchange. Put the larger disc in the smaller guard and the guard no longer covers the wheel. Buy the diameter you can get discs for. Screwfix puts about 30 mm of depth on 115 mm and about 38 mm on 125 mm. ManoMano uses the same split. Makita UK prints 29 mm on the 125 mm DGA504Z and DGA513Z. Do not blend those figures into one Makita specification.

Choose 115 mm for tighter work

The genuine 115 mm body here is the Makita DGA454Z at £179.06, listed at 8,500 rpm and 1.9 kg, with 4.8 from 465 reviews. It is the top pick because that file is deep. UK reviews say the spindle is 5/8 inch and not M14, and Makita Canada lists 5/8"-11 UNC. A 115 mm disc with a 22.23 mm hole still needs a matching flange. The older DGA452Z is a brushed 115 mm body at 11,000 /min on Makita UK's sheet, and it is not an ASIN here. Choose 115 mm when the space is tight and your discs are already 115 mm, after you confirm the spindle.
Makita Makita DGA454Z

Testsieger

Makita Makita DGA454Z
9.1/10about £179.06
View offer

Choose 125 mm as the current UK brushless size

Makita UK's current brushless cordless grinders in this class are 125 mm. The DGA504Z is 8,500 /min, M14, 22.23 mm bore, 29 mm stated depth. The DGA513Z adds 3,000–8,500 /min, a brake and AFT. A reseller showed £119.99 and £181.95 including VAT. Neither is a row here. Inside this set the 125 mm tools are third-party: Synxiter at 8,000 rpm, laloohome up to 7,800 rpm, Gautesy with 9,000 rpm and 90,000 rpm on the same page, and JOJOCY up to 10,000 rpm. A JOJOCY bullet claims 33 mm of depth. That is not Makita's 29 mm, and the thread is not stated. Scores are on the best Makita cordless angle grinder page.

Depth and rpm figures you should not blend

Makita's stated depth on the DGA504Z and DGA513Z is 29 mm. Screwfix's 30 mm and 38 mm, and Toolstation's compact-versus-versatile split, are retailer descriptions of a class. A JOJOCY bullet of 33 mm is a fourth figure. Rpm travels with diameter, so read the wheel in your hand. The DGA454Z is listed at 8,500 rpm. The 76 mm laloohome is listed at 20,000 rpm. The XAG25Z title says 4-1/2 inch and 5 inch, and the bullets say X-LOCK only. Fitting, with the battery off, is on the how to use a cordless angle grinder page.

Common questions

Which size cuts deeper?
Makita prints 29 mm as the maximum depth of cut on the 125 mm DGA504Z and DGA513Z. Screwfix states about 30 mm for a 115 mm class and about 38 mm for a 125 mm class. Those retailer figures are not Makita's. A JOJOCY bullet claims up to 33 mm on a 125 mm compatible body, which we did not measure. Depth is a few millimetres of difference. It is not a reason to fit a 125 mm disc on a 115 mm guard.
Can I put a 125 mm disc on a 115 mm Makita?
No. The guard on the DGA454Z is for the 115 mm disc the listing states. A 125 mm wheel stands proud of that guard. The brand on the disc does not change the geometry. If you need 125 mm wheels, you need a 125 mm body, and on a UK Makita catalogue tool that also means checking you have an M14 spindle rather than the 5/8 inch spindle reviewers describe on the DGA454Z.
What is the difference between M14 and a 22.23 mm bore?
M14 is the spindle thread on UK catalogue 125 mm Makita bodies such as the DGA504Z. The 22.23 mm figure is the hole in the wheel. A wheel with that hole can be clamped by an M14 flange or by a 5/8 inch flange, depending on the nut and the flanges, not depending on the hole alone. The DGA454Z reviews say that spindle is 5/8 inch, not M14. Do not order M14 discs and assume the hole size has answered the thread.
Does the XAG25Z count as both sizes?
The title says 4-1/2 inch and 5 inch, which are the inch names for 115 mm and 125 mm. The bullets say the tool is only compatible with X-LOCK accessories. You do not fit an ordinary 115 mm flange disc or an ordinary 125 mm flange disc and call it both. You buy the X-LOCK wheel in the diameter that guard accepts. US reviews on the listing say those wheels cost more and are harder to find than standard discs.
Where does a 76 mm mini fit?
The laloohome at £38.99 is a 76 mm body at a listed 20,000 rpm and 1.2 kg, with three reviews. One uses it on box section and tube in a tight space. It is a corner tool on a claimed Makita 18 V pack. It is not a third option beside 115 mm and 125 mm for site cutting, and a blade from the 115 mm stack will not fit it. Any included blade still needs a speed mark that covers 20,000 rpm.

Related pages

Makita cordless angle grinder buying guide

Genuine or compatible Makita grinder

Makita cordless angle grinder

Best Makita cordless angle grinder: scored shortlist

How to use a Makita cordless angle grinder at home

Sources

Public sources from the research digest, used for this page in October 2026. Prices, stars and review counts are from the seven amazon.co.uk listings captured on 21 October 2026. PUWER and HSG17 apply at work. They are not a certificate for a domestic grinder. There is no laboratory cut.

  1. Makita UK, DGA504Z (retrieved 21 October 2026)
  2. Makita UK, DGA513Z (retrieved 21 October 2026)
  3. Makita USA, XAG25Z (retrieved 21 October 2026)
  4. Makita Canada, DGA454Z (retrieved 21 October 2026)
  5. HSE, HSG17 abrasive wheels (retrieved 21 October 2026)
  6. HSE, training and competence (retrieved 21 October 2026)
  7. FEPA, bonded abrasives safety leaflet (retrieved 21 October 2026)
  8. GOV.UK, Supply of Machinery (Safety) Regulations 2008 (retrieved 21 October 2026)