TEENO grinders & cut-off · 4-1/2 in and 5 in disc · 2 x 4.0 Ah batteries

TEENO 5″ Brushless Angle Grinder

4.7 out of 5 · 20 ratings

$76.49

  • 21Vcordless
  • 8,500RPM max
  • 4-1/2 in & 5 indisc
  • 2×4.0 Ahbatteries

$76.49

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  • Three speeds: 3,000, 6,000 and 8,500 RPM
  • Takes 4-1/2 in and 5 in discs
  • Auto-brake and soft start
  • Two 4.0 Ah batteries, desktop charger, case

The full-size grinder in the range. A 21 V brushless motor with three speeds up to 8,500 RPM, a standard 5/8″-11 spindle for 4-1/2 and 5 in discs, and two 4.0 Ah batteries.

Fit

Who the 5″ brushless angle grinder suits

A good fit if

  • You grind welds, rust and old paint
  • You already own 4-1/2 in or 5 in discs
  • You want a slow speed for polishing

Look elsewhere if

  • You need to reach into tight spaces
  • You want the lightest tool in the range
  • You want to cut tile with a plunge base

In use

Welds, rust and rebar

The wider disc and the side handle are for work where you lean in: cleaning a weld, taking rust off a trailer, cutting rebar to length.

  • A man in safety glasses grinding steel with a red TEENO angle grinder, sparks flying
    A man in safety glasses grinding steel with a red TEENO angle grinder, sparks flying
  • A man grinding a steel bar with the TEENO 5-inch grinder in a workshop
    A man grinding a steel bar with the TEENO 5-inch grinder in a workshop

Facts

TEENO 5″ Brushless Angle Grinder: the numbers

Disc size
4-1/2 in and 5 in
Top speed
8,500 RPM
Speed settings
3,000 / 6,000 / 8,500 RPM speeds
Voltage
21 V brushless
Batteries
2 x 4.0 Ah
Spindle
5/8″-11 spindle, 7/8″ arbor
Brake
Electronic auto-brake, soft start
Discs and blades in the kit
6
Storage
Blow-molded hard case
Charger
Desktop fast charger
Power
Cordless

5″ Brushless Angle Grinder or 3″ Mini Angle Grinder

5-inch grinder or 3-inch mini grinder?

Pick the 5″ Brushless Angle Grinder for welds, rust and rebar with standard discs and three speeds. Pick the 3″ Mini Angle Grinder for one-hand cuts in tight places at a lower price.

Compared5″ Brushless Angle Grinder3″ Mini Angle Grinder
PowerCordlessCordless
Voltage or motor21 V brushless16.8 V or 21 V, by version
Top speed8,500 RPM19,500 RPM
Disc, bit or blade4-1/2 in and 5 in3 in
Batteries2 x 4.0 Ah2 x 2.0 Ah
Options17
Buyer rating4.7 out of 5 · 204.0 out of 5 · 1,165
Price$76.49from $26.99

See the 3″ Mini Angle Grinder

Buyers

What buyers say about the 5″ brushless angle grinder

4.7out of 5 · 20 ratings

Battery life

I really liked this cordless grinder because it has good power, it feels comfortable to handle it and is very practical for performing different cutting, grinding and polishing jobs. I think it's excellent that it includes two batteries because that way you can continue working while the other battery is charging. It also comes with several discs, charger, auxiliary handle, protector and a sturdy case to store and transport everything in an organized way. The design looks robust and the materials seem to be of good quality. Another advantage is that, being wireless, it allows you to work with more freedom, the package comes quite complete and is very convenient for work at home, in the workshop or for metal projects.

Dayneris · October 13, 2026

Questions

Questions about the 5″ brushless angle grinder

What discs fit the TEENO 5-inch grinder?

Standard 4-1/2 in (115 mm) and 5 in (125 mm) discs on a 5/8″-11 spindle with a 7/8″ arbor. The kit comes with 6: two grinding wheels, two cutting discs and two flap discs.

Does the 5-inch grinder have a slow speed?

Yes. It has three speeds: 3,000, 6,000 and 8,500 RPM. The low one is for polishing and paint, the high one for cutting.

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TEENO 5″ Brushless Angle Grinder, , product photo

$76.495″ Brushless Angle Grinder

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