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Cordless gets all the attention, but a corded grinder still makes sense for many buyers. If you work in a garage or workshop, grind for long periods or cut a lot of concrete, a mains grinder gives you more power per pound and never runs flat.
The best corded angle grinder in 2026 is not a basic "on switch and a motor" any more. Look for constant speed control so the disc does not slow under load, soft start so it does not twist at switch-on, and restart protection, which matters more on corded tools. A grinder left switched on and then plugged in will otherwise start by itself.
Comparing with battery tools? Our best cordless angle grinder guide covers that side.
At a glance: our top picks
- Best corded angle grinder overall: Makita GA5091X01 1,900W 125mm (240v corded) – £209.99 at My Tool Shed
- Best 110v for site work: Makita GA5095X01 Paddle Switch 1,720W 125mm (110v corded) – £205.95 at My Tool Shed
- Best variable speed corded: Flex L 1506 VR Variable Speed 125mm (240v corded) – £335.95 at My Tool Shed
- Best corded 115mm: Makita GA4541R01 1,100W 115mm (240v corded) – £213.95 at My Tool Shed
- Best corded 230mm: Makita GA9071X1 Paddle Switch 2,800W 230mm (240v corded) – £269.95 at My Tool Shed
- Best corded 180mm: Makita GA7071X1 Paddle Switch 2,800W 180mm (240v corded) – £269.95 at My Tool Shed
How we chose
We compared every mains grinder from our UK retail partners and ranked them on:
- Power and constant speed: wattage alone is not enough, it needs to hold speed under load.
- Safety: AFT or kickback sensing, brakes, paddle switches and anti-restart.
- Voltage options: 110v versions for UK building sites.
- Handling: weight, vibration and handle design.
The best corded angle grinders to buy in 2026
1. Makita GA5091X01 1,900W 125mm (240v corded)
- Disc size125mm
- Power1,900W
- Speed2,800 to 11,500rpm
- SafetyAFT, mechanical brake, anti-restart
Pros
- Never runs flat
- Constant speed plus variable speed
- Mechanical brake
Cons
- Cable
- Heavier than cordless
1,900W, constant speed, variable speed, AFT and a mechanical brake for around £210. The Makita GA5091X01 has the safety features of a premium cordless grinder at a much lower price. The 110v version draws 1,720W.
2. Makita GA5095X01 Paddle Switch 1,720W 125mm (110v corded)
- Disc size125mm
- Power1,720W
- Voltage110v site
- SwitchPaddle
Pros
- 110v for UK building sites
- Paddle switch and AFT
- Constant speed
Cons
- Needs a site transformer
- Fixed speed
UK building sites run 110v tools through a transformer, and this paddle switch Makita is built for it. The paddle stops the disc the moment you let go, which many site rules now require.
3. Flex L 1506 VR Variable Speed 125mm (240v corded)
- Disc size125mm
- SpeedVariable
- ControlTachogenerator constant speed
- Voltage240v (110v also available)
Pros
- True constant speed under load
- Variable speed for polishing and brushing
- Soft start and restart protection
Cons
- Pricey for corded
- No brake listed
Flex is known for polishers, and the L 1506 VR uses a tachogenerator to hold speed very precisely. That makes it excellent for polishing stainless, wire brushing and finishing, as well as general grinding. It is also available in 110v.
4. Makita GA4541R01 1,100W 115mm (240v corded)
- Disc size115mm
- Power1,100W
- Speed2,800 to 11,000rpm
- Cable4m
Pros
- Variable speed
- Long 4m cable
- Discs included
Cons
- Corded
- No brake
A compact 1,100W 115mm with variable speed and a 4m cable, useful for workshop jobs and carving. Makita's SJS clutch protects the gears if the disc jams.
5. Makita GA9071X1 Paddle Switch 2,800W 230mm (240v corded)
- Disc size230mm
- Power2,800W
- Speed6,600rpm
- SafetyAFT, brake, paddle, soft start
Pros
- 2,800W for less than most cordless 230mm kits
- D-handle rotates for cutting
- Anti-vibration side grip
Cons
- Over 6kg
- Corded
2,800W, a rotating D-handle, paddle switch, AFT and a brake. For concrete and heavy steel, this does the work of a £700 cordless kit for a fraction of the price.
6. Makita GA7071X1 Paddle Switch 2,800W 180mm (240v corded)
- Disc size180mm
- Power2,800W
- Speed8,500rpm
- SafetyAFT, brake, soft start
Pros
- Huge power
- Rotating D-handle
- Paddle switch
Cons
- 6.2kg
- 180mm discs less common
The 180mm size spins faster than a 230mm, at 8,500rpm, while still cutting deep. That suits heavy grinding on steel fabrication.
240v or 110v?
240v is the normal UK plug for home and workshop use. 110v tools have a yellow plug and run through a site transformer. Most UK construction sites require them because a shock at 110v centre-tapped is far less dangerous. If you do trade work on site, buy 110v. For home use, buy 240v.
When corded beats cordless
| Corded | Cordless | |
|---|---|---|
| Power per pound | Much higher | Lower |
| Runtime | Unlimited | Battery dependent |
| Weight | No battery, but a cable | Battery adds 0.5 to 1.5kg |
| Site safety | Cable can be cut or tripped on | No cable |
| Best for | Workshops, long jobs, concrete | Site work, outdoors, quick jobs |
Watch the cable
Always keep the cable behind you and away from the disc's path. Cutting through a live cable is one of the most common corded grinder accidents. Use an RCD at home.
Need the most power possible? Our most powerful angle grinder guide compares the top-output models. For concrete work see the best angle grinder for concrete.
Quick buying checklist
- Home or workshop? Buy 240v. Building site? Buy 110v.
- 125mm, 1,200W to 1,900W covers most jobs. Only go 230mm for slabs and heavy steel.
- Must-haves: restart protection, soft start and a guard you can adjust without tools.
- Nice to have: constant speed electronics, a brake, and a kickback system such as AFT.
- Check the cable length. 4m saves you an extension lead in most garages.
Expert corner: sizing a 110v transformer
This is the part most buyers get wrong. A transformer is rated in kVA, which is roughly its wattage. The current a grinder pulls is its wattage divided by the voltage, so a 2,400W 230mm grinder draws about 22 amps at 110v. Motors also draw a surge at start-up.
| Grinder | Typical wattage | Transformer to buy |
|---|---|---|
| 115mm / 125mm | 720W to 1,500W | 2kVA or larger |
| 125mm high power | 1,500W to 1,900W | 3kVA |
| 180mm / 230mm | 2,000W to 2,800W | 3.3kVA minimum. Forum users advise 5kVA if you can. |
Voltage drop is the hidden problem. A long, thin extension lead lowers the voltage at the tool, and the motor pulls more current to compensate. That is when breakers trip, even on a big transformer. Use short, heavy-duty leads, and uncoil a reel fully so it cannot overheat.
Expert tips that save time and money
- Soft start earns its place on big grinders. It brings the motor up to speed over about a second, so the tool does not twist in your hand. It also reduces the start-up surge that trips breakers.
- Restart protection matters more on corded tools because power cuts and unplugging are common. Without it, a grinder left switched on will start the moment power returns. See our variable speed guide for more on the electronics that are worth paying for.
- Hang the cable over your shoulder so it runs behind you and can never cross the disc path.
- Use an RCD at home. It cuts the power in milliseconds if the cable is damaged.
- Vibration adds up over a day. HSE limits are based on "trigger time". A grinder rated at 5 m/s² reaches the daily action value after about two hours of actual cutting. Check the vibration figure in the spec before you buy if you grind all day.
- Doing concrete or slabs? Read our concrete guide first. The dust rules apply to corded and cordless tools alike.
What owners actually say
These points come from UK trade and hobby forums. We have linked each thread so you can read the full discussion.
- On the MIG Welding Forum, a workshop owner says their "3kva transformer will run a 9" grinder fine" until it is on an extension across the yard. Then "the 16a breaker trips after about 3 min's continuous cutting". (MIG Welding Forum: 110v saw on a transformer)
- In the same thread, one user describes 80m of 1.5mm cable dropping the supply to around 70 volts. The general advice is to "go as big as you can afford" on the transformer.
- UK owners recommend Makita, DeWalt and Bosch corded grinders. One says his Makita 125 has lasted "many years". (MIG Welding Forum: what size angle grinder)
Beginner mistakes to avoid
We see these again and again
- Running a 230mm grinder from a small 1.5kVA or 2kVA transformer.
- Using a coiled extension reel. It heats up under load.
- Putting the grinder down before the disc stops. It can "walk" over its own cable.
- Buying 110v for home use. You will need a transformer for every job.
Read the disc before you fit it
Every resin-bonded cutting or grinding disc sold in the UK carries markings under EN 12413. Two matter most:
- The use-by date is stamped on the metal centre ring as a "V" followed by the date, for example V12/2027. It is set no more than three years after manufacture. Out-of-date resin bonds can break up at speed.
- The maximum rpm must be equal to or higher than your grinder's no-load speed.
A disc's limit is really its rim speed, usually 80 metres per second. That is why bigger discs are rated for lower rpm: 80 m/s works out at about 13,300rpm for a 115mm disc, 12,200rpm for 125mm, 8,500rpm for 180mm and 6,600rpm for 230mm. Never fit a worn-down 230mm disc to a small grinder. It is still only rated for about 6,600rpm, and a 125mm grinder spins nearly twice that fast.
Sources: MIG Welding Forum: 110v saw on a transformer · MIG Welding Forum: what size angle grinder · HSE hand-arm vibration exposure calculator · HSE HSG17: Safety in the use of abrasive wheels · Abrasive wheel marking explained (EN 12413)
Frequently asked questions
Are corded angle grinders better than cordless?
For power per pound and unlimited runtime, yes. Cordless is safer and more convenient on site. Many trades own one of each.
What wattage angle grinder do I need?
800W to 1,100W is fine for DIY on 115mm. Around 1,400W to 1,900W suits 125mm trade use, and 2,000W+ for 230mm.
Do I need a 110v angle grinder?
Only for UK building sites that require 110v. At home, a standard 240v grinder is right.
What is restart protection?
It stops the grinder starting by itself if it is switched on when power is connected. You must switch it off and on again.
What size transformer do I need for a 110v angle grinder?
For 115mm and 125mm grinders a 2kVA to 3kVA transformer is fine. For 180mm and 230mm grinders of 2,000W or more, use at least 3.3kVA, and 5kVA if you can.
Why does my 110v grinder trip after a few minutes?
Usually voltage drop from a long or thin extension lead, or a transformer that is too small. The motor pulls more current as the voltage drops, which trips the overload.
How long can I use an angle grinder in a day?
It depends on the tool's vibration rating. HSE's exposure calculator shows a 5 m/s² grinder reaches the daily action value after about two hours of trigger time. Lower-vibration models let you work longer.
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