The Best Variable Speed Electric Die Grinder: Buying Guide and Reviews

A die grinder is a power tool used for polishing, grinding, honing, and sanding materials like metal, plastic, and wood. It is a befitting tool for anyone looking for versatility and precision, whether they are old guards in the field or starters. With the vast range of functions, it can perform as well as its efficiency, you can never doubt the power of the grinder.

If you are looking for a variable speed electric die grinder, read through this review for insights. It covers our top five picks beginning with the editor’s choice, budget pick, and best value. It also has their specifications, key features and benefits, pros and cons, and a buying guide.

Our Top Picks for A Variable Speed Electric Die Grinder

Editor's Pick
Bosch DG355LCE 120-Volt Die Grinder...
Budget Pick
Gino Development 01-0855 TruePower Heavy...
Upgrade pick
Metabo GE 950 G Plus 8.5-Amp 950-watt...
Metabo GE710 Compact 13000 to 34000 Rpm...
Bosch DG490CE 120-Volt Die Grinder...
Model
Bosch DG355LCE 120-Volt Die Grinder...
Gino Development 01-0855 TruePower Heavy...
Metabo GE 950 G Plus 8.5-Amp 950-watt...
Metabo GE710 Compact 13000 to 34000 Rpm...
Bosch DG490CE 120-Volt Die Grinder...
Amperage
5.8
4.3
8.5
6.4
6.5
No load speed (RPM)
10,000 – 30,000
0 – 22,000
2,500 – 8,700
13,000 – 34,000
2,500 – 8,000
Power source
Electric-powered
Electric-powered
Electric-powered
Electric-powered
Electric-powered
Voltage
120V
120V
120V
120V
120V
Shank size (in)
1/4
1/4
1/4
1/4
1/4
Price
$239.99
$52.32
$339.88
$195.99
$328.38
Customer Rating
Editor's Pick
Bosch DG355LCE 120-Volt Die Grinder...
Model
Bosch DG355LCE 120-Volt Die Grinder...
Amperage
5.8
No load speed (RPM)
10,000 – 30,000
Power source
Electric-powered
Voltage
120V
Shank size (in)
1/4
Price
$239.99
Customer Rating
Budget Pick
Gino Development 01-0855 TruePower Heavy...
Model
Gino Development 01-0855 TruePower Heavy...
Amperage
4.3
No load speed (RPM)
0 – 22,000
Power source
Electric-powered
Voltage
120V
Shank size (in)
1/4
Price
$52.32
Customer Rating
Upgrade pick
Metabo GE 950 G Plus 8.5-Amp 950-watt...
Model
Metabo GE 950 G Plus 8.5-Amp 950-watt...
Amperage
8.5
No load speed (RPM)
2,500 – 8,700
Power source
Electric-powered
Voltage
120V
Shank size (in)
1/4
Price
$339.88
Customer Rating
Metabo GE710 Compact 13000 to 34000 Rpm...
Model
Metabo GE710 Compact 13000 to 34000 Rpm...
Amperage
6.4
No load speed (RPM)
13,000 – 34,000
Power source
Electric-powered
Voltage
120V
Shank size (in)
1/4
Price
$195.99
Customer Rating
Bosch DG490CE 120-Volt Die Grinder...
Model
Bosch DG490CE 120-Volt Die Grinder...
Amperage
6.5
No load speed (RPM)
2,500 – 8,000
Power source
Electric-powered
Voltage
120V
Shank size (in)
1/4
Price
$328.38
Customer Rating

Our Editor’s choice for the best variable speed electric die grinder is the Bosch DG355LCE 120-Volt Die Grinder.... As the name suggests, it guarantees the user versatility since its variable speed allows them to switch the speeds to fit each application. The tool also features a lock On/Off slide switch which allows the user to lock it when not in use or if they need it to run for extended time.

Variable speed electric die grinder reviews

1. Editor's pick: Hitachi NR90AES1 Framing Nailer 

Specifications

  • Amperage: 5.8-Amp
  • No load speed: 10,000 – 30,000 RPM
  • Shank size: 1/4- inch
  • Collet chuck: 1/4-inch
  • Power source: electric-powered
  • Voltage: 120V
  • Product dimensions: 14.75” X 4.0”
  • Components: 19mm wrench, 13mm wrench

Key Features

  • Variable speed dial (with six basic settings).
  • Hardened 1/4-inch collet.
  • Lock On/Off slide switch.
  • Service minder Carbon brushes.
  • Metal gear cover.

Features & Benefits

  • The Bosch Power Tools is designed with a variable speed control which allows the user to set their preferred and perfect speed for each application at hand.
  • It also features a hardened quarter inch collet which guarantees the tool to last for long and offer increased precision.
  • The tool has a lock On/Off slide switch. This allows for easy locking for extended usage.
  • The Bosch product is also fitted with service minder Carbon brushes for increased lifespan and less downtime. It also features an auto cut-off when the brushes need service.
  • The Bosch tool also allows the user to grind even in hard-to-reach places, all thanks to the extended spindle it features.
  • The tool is also designed with a Constant-Response circuitry which provides for a soft-start and overload protection, and also maintains constant speed under load.
  • Also, the tool has a directed air flow which diverts dust away from vital components while also extending the tool’s life.
  • The metal gear cover makes it more durable.

Pros

  • Does not pose overheating challenges.
  • Durable gear.
  • Features a variable speed control mechanism.

Cons

  • The motor is large and heavy which makes the tool heavier for continued use.

2. Budget Pick: Gino Development 01-0855 TruePower Heavy Duty Long Shaft Electric Die Grinder


Specifications

  • Amperage: 4.3-Amp
  • No load speed: 0 – 22,000 RPM
  • Speed ranges: 0 – 5,000, 0 – 6,500, and 0 – 8,500 RPM
  • Shank size: 1/4- inch
  • Collet chuck: 6.35mm
  • Spindle travel: 1-inch
  • Throat: 4-inch
  • Wheel diameter: 1 – 1/2-inch
  • Power source: electric-powered
  • Voltage: 120V, 60Hz
  • Wattage: 350

Key Features

  • Variable speed control.
  • Permanent magnet motor.

Features & Benefits

  • The TruePower Tools' product features a variable speed control mechanism which allows the user to switch to the most appropriate speed level per application.
  • The tool also features a lightweight design which makes it easy to move around and ease without fatigue.
  • Also designed with an all ball-bearing construction, the tool is made to last longer.
  • The product is also designed with a longer-than-typical shaft that lets the user reach even tight and cramped workspaces.

Pros

  • Lightweight and maneuverable design.
  • Durable all ball-bearing construction.
  • Packed with spare motor brushes and tools for bit installation.

Cons

  • Product not fit for fettling or heavy-duty die grinding works, especially on metals since the motor is a bit weak.
  • The On/Off switch is a bit stiff.
  • Runs hot after continued use.

3. Upgrade pick: Metabo GE 950 G Plus 8.5-Amp 950-watt High Torque Die Grinder

Specifications

  • Amperage: 5.8-Amp
  • No load speed: 2,500 – 8,700 RPM
  • Rated load speed: 7,200 RPM
  • Collet chuck: 1/4-inch
  • Collar diameter: 1 – 11/16-inch
  • Power source: electric-powered
  • Voltage: 120V
  • Wattage: 950 W (input) and 510 W (output)

Key Features

  • Thermal overload protection.
  • Spindle lock
  • Electronic safety cut-off feature.
  • Die-cast aluminum gear housing.
  • Auto-stop carbon brushes

Features & Benefits

  • The tool has a unique spindle lock which makes changing of accessories easy and quick using a wrench.
  • It also has a wide speed range (2,500 – 8,700 RPM) which makes it more versatile for use in grinding, bevelling and cutting metal, graining and polishing, sanding, edge finishing, and deburring.
  • The product also features a powerful LongLife motor with ratings of 950 watts of power, a rated load of 7,200 rpm and 27 inch-lbs of torque. All these features make it the ideal tool for multiple applications, whether light- or heavy-duty.
  • The tool is also designed with a hardened and ground 1/4" collet which ensures accurate balance and minimized run-out of accessories.
  • The product is also made with several advanced motor protection features. They include thermal overload protection, an electronic soft start, and electronic speed stabilization, all working together to ensure extended tool life.
  • The die grinder has an electronic safety cut-off feature that protects the user should the tool bind or snag.
  • It is also fitted with a side handle and a soft rubber grip ensuring the user gets complete control and comfortable grip and is also protected from excessive heat.
  • Restart protection: prevents unintentional start-up after power supply interruption

Pros

  • Powerful LongLife motor
  • Powerful debris-blowing fan.

Cons

  • The fan is considerably noisy.

4. Metabo GE710 Compact 13000 to 34000 Rpm 6.4-Amp Die Grinder


Sale
(38)

Specifications

  • Amperage: 6.4-Amp
  • No load speed: 13,000 – 34,000 RPM
  • Rated load speed: 24,000 RPM
  • Collet chuck: 1/4-inch
  • Collar diameter: 1 – 11/16-inch
  • Power source: electric-powered
  • Voltage: 120V
  • Wattage: 710 W (input), 430 W (output)

Key Features

  • Variable speed control thumbwheel.
  • Electronic safety shutdown.
  • Auto-stop Carbon Brushes.

Features & Benefits

  • The Metabo GE710 die grinder is a compact tool with a variable speed control mechanism. This ensures that the user can switch the speeds to fit the application at hand.
  • The tool also has an electronic safety shutdown mechanism which ensures the motor is shut down if the tool jams or stops unexpectedly.
  • Also, the product features a thermal overload protection which ensures it does not jam if overloaded.
  • The tool also features a hardened and ground collet chuck that allows for precise concentricity of the tool in use.
  • The grinder is also designed with a restart protection mechanism which prevents unintentional start-up whenever there is a power interruption.
  • It is also fitted with a Metabo LongLife motor that is also fitted with a dust protection system for prolonged service life.
  • The tool is also made with a precise collar for stationary use.

Pros

  • Powerful and high-speed motor.
  • Compact, slim, and handy design.

Cons

  • Some collet sizes may not be accurate.

5. Bosch DG490CE 120-Volt Die Grinder Variable Speed