Best 4-Inch Angle Grinder in 2021 (Reviews and Comparison)

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Angle grinders can perform a variety of functions and act in a lot of ways as multi-tools. They can cut through materials, sharpen tools, sand and grind. You can find angle grinders sized from four inches to nine inches. The different materials you can use an angle grinder on include wood, plastic, metal, stone, tile and concrete.

Four inch angle grinders offer a greater amount of precision due to their small disc size. However, this can make it more difficult to complete larger jobs. Still, a four inch grinder can work on the same materials as their larger counterparts. They just cannot impact as large of an area.

This article will discuss five of the best four inch angle grinders on the retail market. Stay tuned to see our winner for best angle grinder in the four inch class at the end of this article. But before we jump into the reviews, here is a buyer’s guide for selecting the right angle grinder.

COMPARISON CHART

IMAGE PRODUCT

Makita XAG04Z 18V LXT Lithium-Ion Brushless Cordless 4-1/2” / 5" Cut-Off/Angle Grinder, Tool Only

Makita XAG04Z
  • Great for beginners
  • Safety features for both user and device
  • Excellent battery life
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Bosch 4-1/2-Inch Angle Grinder 1375A

Bosch 4-1/2-Inch Angle Grinder
  • Backed by one year warranty and 30 day money back guarantee
  • Very powerful for its size
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DEWALT Angle Grinder Tool, Paddle Switch, 4-1/2-Inch, 11-Amp (DWE402)

DEWALT Angle Grinder Tool
  • Low price
  • Great for heavy duty projects
  • Quick-change wheel release system
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PORTER-CABLE 20V MAX Angle Grinder Tool, 4-1/2-Inch, Tool Only (PCC761B)

PORTER-CABLE 20V MAX Angle
  • Lightweight and compact design results in comfortable operation
  • Very powerful for its size
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BLACK+DECKER Angle Grinder Tool, 4-1/2-Inch, 6 Amp (BDEG400)

BLACK+DECKER Angle Grinder
  • Lightweight and powerful
  • Comfortable handle design and positions
  • Very affordable
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Makita XAG04Z 18V LXT Lithium-Ion Brushless Cordless 4-1/2” / 5" Cut-Off/Angle Grinder, Tool Only

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Makita XAG04Z 18V LXT Lithium-Ion Brushless Cordless 4-1/2” / 5" Cut-Off/Angle Grinder, Tool Only

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Makita XAG04Z 18V LXT Lithium-Ion Brushless Cordless 4-1/2” / 5" Cut-Off/Angle Grinder, Tool Only

This four-and-a-half inch angle grinder delivers a lot of power in a small package. Its motor delivers up to 8,500 RPMs, which you can use on tile, concrete, pipe and conduit materials. This speed is backed by automatic speed change technology, which alters the speed and torque for optimum performance during operation.

WHAT WE LIKE

This automatic adjustment helps beginners operate this device with a greater degree of confidence. Additionally, beginners will enjoy the safety features that the Makita includes. Should the wheel stop during operation for any reason, active feedback-sensing technology will turn off the motor. This greatly reduces the chance of accidental injury while using this grinder. 

Further, the BL brushless motor helps the motor run cooler and more efficiently, increasing its life. This kind of motor also allows for better battery use, increasing battery life by 50 percent over motors with carbon brushes.

This grinder weighs only 4.8 pounds and has a rubber grip, increasing user comfort and control. With soft start technology, it starts up smoothly and reduces wear on gears.

PROS

  • Great for beginners
  • Safety features for both user and device
  • Excellent battery life
  • Great power-to-weight ratio

CONS

  • Low maximum RPM output
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Bosch 4-1/2-Inch Angle Grinder 1375A

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Bosch 4-1/2-Inch Angle Grinder 1375A

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Bosch 4-1/2-Inch Angle Grinder 1375A

The Bosch 1375A angle grinder delivers maximum power in an incredibly compact package. A powerful 6 amp motor generates up to 11,000 RPMs for use on a variety of materials and projects. That speed helps create an efficient cut on wood, plastic, metal, stone and tile.

WHAT WE LIKE

A corded grinder, you can get hours of performance without worry about battery life. However, that means that you need a constant nearby power source or extension cords in order to use it. Such is the trade-off of a corded power tool. 

Bosch builds their tools to last. This grinder features the Service Minder Brush System, which turns off the tool whenever it needs preventative maintenance. A feature standard on many Bosch tools, this helps keep the grinder from breaking during operation. It also has an epoxy coated design which keeps out debris from interfering with the internal mechanisms.

Weighing only 3.75 pounds, you can use this grinder for hours on end without suffering from fatigue. Additionally, you can adjust the auxiliary handle to two different positions to maximize comfort.

PROS

  • Lightweight and compact design results in comfortable operation
  • Backed by one year warranty and 30 day money back guarantee
  • Very powerful for its size

CONS

  • Corded, reducing portability
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DEWALT Angle Grinder Tool, Paddle Switch, 4-1/2-Inch, 11-Amp (DWE402)

CHECK PRICE

DEWALT Angle Grinder Tool, Paddle Switch, 4-1/2-Inch, 11-Amp (DWE402)

CHECK PRICE

DEWALT Angle Grinder Tool, Paddle Switch, 4-1/2-Inch, 11-Amp (DWE402)

The Bosch 1375A angle grinder delivers maximum power in an incredibly compact package. A powerful 6 amp motor generates up to 11,000 RPMs for use on a variety of materials and projects. That speed helps create an efficient cut on wood, plastic, metal, stone and tile.

WHAT WE LIKE

A corded grinder, you can get hours of performance without worry about battery life. However, that means that you need a constant nearby power source or extension cords in order to use it. Such is the trade-off of a corded power tool. 

Bosch builds their tools to last. This grinder features the Service Minder Brush System, which turns off the tool whenever it needs preventative maintenance. A feature standard on many Bosch tools, this helps keep the grinder from breaking during operation. It also has an epoxy coated design which keeps out debris from interfering with the internal mechanisms.

Weighing only 3.75 pounds, you can use this grinder for hours on end without suffering from fatigue. Additionally, you can adjust the auxiliary handle to two different positions to maximize comfort.

PROS

  • Lightweight and compact design results in comfortable operation
  • Backed by one year warranty and 30 day money back guarantee
  • Very powerful for its size

CONS

  • Corded, reducing portability
CHECK PRICE

PORTER-CABLE 20V MAX Angle Grinder Tool, 4-1/2-Inch, Tool Only (PCC761B)

CHECK PRICE

PORTER-CABLE 20V MAX Angle Grinder Tool, 4-1/2-Inch, Tool Only (PCC761B)

CHECK PRICE

PORTER-CABLE 20V MAX Angle Grinder Tool, 4-1/2-Inch, Tool Only (PCC761B)

The Bosch 1375A angle grinder delivers maximum power in an incredibly compact package. A powerful 6 amp motor generates up to 11,000 RPMs for use on a variety of materials and projects. That speed helps create an efficient cut on wood, plastic, metal, stone and tile.

WHAT WE LIKE

A corded grinder, you can get hours of performance without worry about battery life. However, that means that you need a constant nearby power source or extension cords in order to use it. Such is the trade-off of a corded power tool. 

Bosch builds their tools to last. This grinder features the Service Minder Brush System, which turns off the tool whenever it needs preventative maintenance. A feature standard on many Bosch tools, this helps keep the grinder from breaking during operation. It also has an epoxy coated design which keeps out debris from interfering with the internal mechanisms.

Weighing only 3.75 pounds, you can use this grinder for hours on end without suffering from fatigue. Additionally, you can adjust the auxiliary handle to two different positions to maximize comfort.

PROS

  • Lightweight and compact design results in comfortable operation
  • Very powerful for its size

CONS

  • Corded, reducing portability
CHECK PRICE

BLACK+DECKER Angle Grinder Tool, 4-1/2-Inch, 6 Amp (BDEG400)

CHECK PRICE

BLACK+DECKER Angle Grinder Tool, 4-1/2-Inch, 6 Amp (BDEG400)

CHECK PRICE

BLACK+DECKER Angle Grinder Tool, 4-1/2-Inch, 6 Amp (BDEG400)

The Bosch 1375A angle grinder delivers maximum power in an incredibly compact package. A powerful 6 amp motor generates up to 11,000 RPMs for use on a variety of materials and projects. That speed helps create an efficient cut on wood, plastic, metal, stone and tile.

WHAT WE LIKE

A corded grinder, you can get hours of performance without worry about battery life. However, that means that you need a constant nearby power source or extension cords in order to use it. Such is the trade-off of a corded power tool. 

Bosch builds their tools to last. This grinder features the Service Minder Brush System, which turns off the tool whenever it needs preventative maintenance. A feature standard on many Bosch tools, this helps keep the grinder from breaking during operation. It also has an epoxy coated design which keeps out debris from interfering with the internal mechanisms.

Weighing only 3.75 pounds, you can use this grinder for hours on end without suffering from fatigue. Additionally, you can adjust the auxiliary handle to two different positions to maximize comfort.

PROS

  • Lightweight and compact design results in comfortable operation
  • Backed by one year warranty and 30 day money back guarantee
  • Very powerful for its size

CONS

  • Corded, reducing portability

Buyer’s Guide: Selecting an Angle Grinder

Keep the four following factors in mind when deciding on an angle grinder to purchase.

Disc Size

As stated before, disc size varies from four inches to nine inches. The disc size you need depends on what you intend to use your grinder for. Smaller discs allow for greater precision while larger grinders save time when completing larger jobs. 

Power-to-Weight Ratio

Angle grinders work better the faster they spin their discs. The maximum speed of most angle grinders varies from 5,000 RPMs to 12,000 RPMs. You can find most angle grinders vary in their power output for use during different jobs. Some angle grinders allow you to operate them at less than 1,000 RPMs.

More powerful angle grinders often weigh more than their less powered counterparts. This is because they need larger motors to produce more energy. Heavy angle grinders might produce more power, but they make extended use difficult. Do not pick an angle grinder heavier than you are comfortable with, regardless of its power level. Sometimes when you find a lightweight but powerful angle grinder, it may present a challenge to operate with complete control. 

Comfort and Control

Make sure you pick an angle grinder that you can operate comfortably. This means feeling completely in control of the device. Look for an angle grinder with a stabilizing handle and comfort grip. User reviews will often indicate the comfort level of the grinder’s operation.

Price and Warranty

Price always plays a factor in making a decision about an angle grinder. The majority of grinders cost between $100 and $200. Additional features will cost more. Be wary of a deal that looks too good to be true. It does not make any sense to buy a cheap power tool if it breaks easily or presents a danger during operation.

Look for an angle grinder backed by some sort of warranty. Try to get extensive use out of your power tool during the duration of the warranty to make sure it will last for a good long time.

Our Winner: The Makita XAG04Z

Overall, the Makita four-and-a-half inch angle grinder offers the best all around experience. Beginners and seasoned professionals should find this device easy to handle. It has a great power-to-weight ratio, allowing for more precision. Additionally, it comes with several safety features to protect the user and the device. You can get more than enough life out of the battery to perform most jobs without delay. 

Other Recommendations:

Check out our blog for more power tool reviews and recommendations.

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