Cordless grinders Mighty Seven

- 🔹 Brushless motor – higher efficiency, longer runtime per charge and minimal maintenance.
- 🔹 Shared 18V Li-ion platform – one battery powers the entire M7 range of cordless tools.
- 🔹 Angle and eccentric versions – rough cutting and grinding as well as fine paint finishing.
- 🔹 Independence from compressed air supply – full power even where there is no compressor or power outlet.
- 🔹 Speed control – on the eccentric DOS-501, 7,000–11,000 rpm depending on material.
- 🔹 Balanced body – from 1.25 kg for control over the tool and less fatigue.
Parameter overview — M7 cordless sanders |
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| Order number | Diameter | No-load speed | Overall length | Weight |
| DOS-501 | 125 mm | 7,000–11,000 rpm | 300 mm | 1.25 kg |
| DG-501 | 125 mm | 8,000 rpm | 285 mm | 2.2 kg |
| DG-501A | Angle grinder DG-501A in a set with a case + 2 batteries 5.0 Ah 18V Li-ion | |||
| DG-501K | DG-501K angle grinder set with a case | |||
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Mighty Seven (M7) cordless grinders deliver the performance of a professional grinder without depending on a compressor or a cable. Built on a shared 18V Li-ion platform with a brushless motor, they handle both rough cutting and fine finishing anywhere — in a mobile service, on-site installation, or wherever an air supply simply isn't available.
Brushless technology in practice
The brushless motor has no carbon brushes that would rub and burn out — it heats up less, lasts longer, and gets more work out of a single battery. The electronics monitor the speed under load, so the grinder doesn't lose cutting power even under pressure into the material, similar to a quality mains-powered grinder.
One battery for the whole workshop
Because M7 cordless tools share the same 18V Li-ion battery, one set of batteries powers the grinder, the saw, the screwdriver, and garden equipment. You don't have to buy batteries for each machine separately — this significantly reduces the overall cost of equipment.
Main reasons to choose Mighty Seven (M7) cordless grinders:
- ✔ Mobility – work anywhere, without a hose or an extension cord.
- ✔ Mains-level power from a battery – the brushless motor maintains speed even under pressure.
- ✔ Shared batteries – one battery for the entire M7 range.
- ✔ Low maintenance – no carbon brushes, less servicing, and a longer lifespan.

VENTILEK’S TIP:
Cordless means freedom — no hose dragging behind you, no cable mess around the workshop. If you already have M7 batteries for your impact wrench, the grinder will use them too. Tip: for paint finishing use the random orbital DOS-501, for quick cutting use the angle grinder DG-501.