Not everyone needs a bench grinder, but if you work with metal, it is an invaluable tool. Whether you are smoothing rough surfaces, polishing car bodywork, or sharpening tools and knives, a bench grinder handles the heavy lifting.
We tested the top bench grinders on the market, judging them on price, performance, and durability to help you find the right machine for your workshop.
- Slow speed for better precision and control
- Diamond grinding wheel stays cool
- Adjustable spark shield for added safety
- Great price (especially for a DeWALT)
- Powerful motor (3,450 RPM)
- Premium quality brand
- Great price (best budget)
- Flexible work light
- 16 pound lightweight design
- Variable speed for different materials
- Flexible work light
- Large 8-inch grinding disc
- Powerful 15 horsepower motor (3,600 RPM)
- Durable cast iron construction
- Pre-drilled base for fixing it in place
- Separate LEDs for clearer view
- Great price (excellent value for money)
- Rubber feet for additional grip
- Variable speed for different materials
- Water tray included
- Dedicated drill bit feature
What Is a Bench Grinder Used For?
Bench grinders are versatile beasts. While they look simple, they can perform a wide range of tasks depending on the wheel you attach.
Grinding
This is the bread and butter of the tool. Grinders remove material fast, making them perfect for smoothing out a fresh weld or shaping a piece of steel. You typically use different stones for this:
- Coarse (36-grit): ideal for hogging off material quickly.
- Medium/Fine (60 to 120-grit): better for refining the shape and smoothing the surface.
Safety Tip: Never grind soft metals like aluminum on a standard stone wheel. The soft metal clogs the pores of the stone, causing heat buildup that can make the wheel explode.
Sharpening
Bench grinders are the go-to tool for bringing dull edges back to life. You can sharpen chisels, lawnmower blades, drill bits, and knives.
For sharpening, speed matters. A standard grinder runs fast (3,450 RPM), which generates heat. Heat ruins the temper of steel, making the edge soft and useless. A slow-speed grinder (1,750 RPM) or a variable-speed model is far superior for sharpening because it keeps the metal cool.
Cutting
While not a chop saw, a grinder can cut through bolts, rods, and pipes. You hold the object against the rest and rotate it against the spinning wheel. Rotating the piece ensures an even cut and prevents one spot from getting too hot.
Buffing and Polishing
Swap out the abrasive stone for a cotton buffing wheel, add some polishing compound, and you can turn dull metal into a mirror. This is a favorite technique for auto restorers cleaning up chrome trim or engine parts.
Removing Rust
Wire wheel attachments are magic for restoration. They strip rust, paint, and grime off metal parts without removing the base metal underneath. It is significantly faster than sanding by hand.
Buying Guide
Not all grinders are built the same. Here is what you need to look for before you buy.
Wheel Size
The two standard sizes are 6-inch and 8-inch.
- 6-Inch: These are the standard for home DIY. They typically spin faster (3,450 RPM) and are great for general grinding and basic sharpening.
- 8-Inch: These are larger, heavier, and usually run slower (1,750 RPM). The larger wheel has a flatter surface, which is better for sharpening tools like chisels. They also have more torque, so they won’t bog down under load.
Motor Power
The motor drives the wheel, so you want enough juice to keep it spinning when you apply pressure.
- Amps and HP: Look for at least 2.1 amps for a 6-inch grinder. For an 8-inch model, you want 4 to 5 amps (around 0.5 to 1 HP).
- Stalling: A weak motor will slow down or stall when you push metal against the wheel. This is frustrating and leads to poor results.
Wheel Width
Budget grinders often come with thin wheels (around 1/2-inch or 16mm). These wear out faster and can feel flimsy. Look for wheels that are at least 3/4-inch or 1-inch thick. A wider surface area makes it easier to keep your tools flat and stable while grinding.
Safety Features
Grinders throw sparks and debris at high speeds.
- Spark Guards: These should be adjustable to sit close to the wheel.
- Eye Shields: Clear plastic shields are mandatory. Some even have magnifying lenses to help you see fine details.
- Tool Rests: The rest is where you brace the workpiece. Cast iron rests are superior to stamped steel because they don’t flex.
Variable Speed
If you can afford it, get a variable speed model. It gives you the best of both worlds. Crank it up to high speed for grinding down a bolt, then drop it to low speed to sharpen a delicate wood chisel without burning the edge.
What Size Bench Grinder Should I Get?
If you are a general DIYer who just needs to sharpen a mower blade or grind a bolt occasionally, a 6-inch grinder is perfect. It is compact, cheaper, and gets the job done.
If you are a woodworker or do heavy metal fabrication, go for an 8-inch slow-speed or variable-speed grinder. The slower speed protects your tools from overheating, and the larger wheels last longer and provide a better grind profile.
FAQs
Can I Grind Aluminum on a Bench Grinder?
Generally, no. You should not grind aluminum with a standard stone wheel. Aluminum is soft and melts easily; it clogs the pores of the stone wheel (known as “loading”). This creates friction and heat buildup, which can cause the stone wheel to shatter or explode. If you must grind aluminum, you need a specialized wheel designed specifically for non-ferrous metals.
What Does “Dressing” a Grinding Wheel Mean?
Dressing a wheel removes the clogged outer layer of abrasive grains and exposes fresh, sharp grit. It also squares up the face of the wheel if it has become uneven or grooved. You use a tool called a “wheel dresser” (often a diamond-tipped tool or a star-wheel dresser) to clean and flatten the spinning wheel.
Why Do I Need a Slow Speed Grinder?
Standard grinders run at 3,450 RPM, which removes material fast but creates a lot of heat. Slow speed grinders run at 1,750 RPM. This lower speed reduces friction heat, making them ideal for sharpening hardened steel tools like chisels and lathe knives. High heat can ruin the temper of the steel, making the edge soft.
Product Reviews
We analyzed the top grinders on the market to find the best mix of power, durability, and value. Whether you are sharpening lathe tools or polishing chrome, there is a machine here for your shop.
Rikon Professional Power Tools 80-805 8-Inch Slow Speed Bench Grinder
Best Bench Grinder for Sharpening
The Rikon 80-805 is a favorite among woodworkers for a reason. Unlike standard high-speed grinders, this model runs at a low 1,750 RPM. This slower speed is critical for sharpening because it prevents the friction heat that destroys the temper of your tools.
It comes equipped with 60-grit and 120-grit white aluminum oxide wheels. These “friable” wheels keep the cutting action cool and efficient, reducing the risk of burning your chisels. The 8-inch size gives you a nice, flat grind, and the cast iron base reduces vibration significantly.
The tool rests are adjustable, and the safety shield includes a magnifying glass, which is a nice touch for precision work. If your main goal is sharpening tools, this is the grinder to beat.
What We Like
Slow Speed (1,750 RPM)
The lower RPM ensures you don’t overheat your tools. It gives you far more control and precision when sharpening delicate edges.
White Aluminum Oxide Wheels
These wheels are superior to standard grey stones for sharpening. They cut cleaner and cooler, which means you spend less time dressing the wheel and more time working.
Adjustable Safety Shield
The spark guards are easy to adjust as the wheel wears down, and the inclusion of a magnifier helps you see exactly what is happening at the cutting edge.
What We Don't Like
Not for Heavy Material Removal
Because it runs slow, this isn’t the best tool for hogging off massive amounts of steel quickly. It is a precision instrument, not a demolition tool.
Product Specs
| Weight (pounds) | 37.5 |
| Dimensions (inches) | 16.38 x 10.75 x 11.25 |
| Grit | 60 and 120 |
| Wheel size (inches) | 8 |
| RPM | 1,750 |
| Motor power | 0.5 HP |
| Price | $$$ |
| Warranty | 5-year |
Our Ratings
DeWALT DW756 6-Inch Bench Grinder
Best Overall Bench Grinder
DeWALT is a powerhouse in the tool world, and the DW756 is a solid workhorse for general shop use. It features a robust 5/8 HP induction motor that spins at a snappy 3,450 RPM. This high speed makes it excellent for grinding down welds, deburring metal, and general shaping tasks.
The standout feature here is the build quality. It has a cast iron base and motor housing, giving it durability and weight that cheaper plastic models lack. The tool rests are precision-machined aluminum, which allows you to position your work accurately.
There is a generous 12.5-inch distance between the wheels, so you have plenty of room to maneuver larger or oddly shaped items without bumping into the motor housing.
What We Like
Solid Construction
The cast iron base and housing make this grinder durable and stable. It doesn’t walk around the workbench when you turn it on.
Powerful Motor
With 3,450 RPM and a 5/8 HP motor, it has plenty of torque for general grinding duties. It doesn’t bog down easily under load.
Great Wheel Spacing
The wide gap between the wheels is a subtle but important feature. It gives you the freedom to work on longer tools and components without obstruction.
What We Don't Like
High Speed Only
Since it is a single-speed high-RPM motor, you have to be careful when sharpening sensitive tools to avoid overheating them.
Product Specs
| Weight (pounds) | 28.5 |
| Dimensions (inches) | 16.75 x 11.38 x 9.44 |
| Grit | 36 and 60 |
| Wheel size (inches) | 6 |
| RPM | 3,450 |
| Motor power | 0.625 HP |
| Price | $$ |
| Warranty | 3-year limited |
Our Ratings
WEN 4276 6-Inch Bench Grinder
Best Budget Bench Grinder
If you need a bench grinder for occasional use and don’t want to spend a fortune, the WEN 4276 is the answer. It is incredibly affordable but still packs enough punch for home DIY tasks. The 2.1-amp motor spins the 6-inch wheels at 3,450 RPM.
It is lightweight (around 16 lbs), making it easy to move if you have a small shop and need to store it on a shelf. Despite the price, WEN includes a flexible work light, which is a feature often missing on more expensive units.
It comes with 36-grit and 60-grit wheels, covering your bases for material removal and general sharpening. It isn’t an industrial beast, but for the weekend warrior, it is a steal.
What We Like
Unbeatable Price
You simply cannot beat the value here. It performs well for basic tasks at a fraction of the cost of big-name brands.
Flexible Work Light
Lighting is crucial for safety and precision. The built-in flexible lamp lets you aim light exactly where the wheel meets the metal.
Compact and Portable
Its lighter weight and small footprint make it perfect for small garages or workshops where bench space is at a premium.
What We Don't Like
Light Duty Only
The 2.1-amp motor is fine for sharpening a mower blade, but if you lean into it with a heavy steel bar, you will slow it down. It is not built for continuous heavy use.
Product Specs
| Weight (pounds) | 16 |
| Dimensions (inches) | 14 x 9.75 x 15 |
| Grit | 36 and 60 |
| Wheel size (inches) | 6 |
| RPM | 3,450 |
| Motor power | 2.1 amps |
| Price | $ |
| Warranty | 2-year |
Our Ratings
WEN 4280 5-Amp Variable Speed Bench Grinder
Best 8-Inch Bench Grinder
The WEN 4280 takes everything good about the smaller model and supercharges it. This is an 8-inch grinder with a 5-amp motor, but the real headline is the variable speed control. You can dial the speed anywhere from 2,000 to 3,400 RPM.
This versatility is a game-changer. You can run it slow for sharpening to avoid burning your tools, or crank it up to max speed for aggressive material removal.
It comes with 80-grit and 36-grit wheels, giving you a good range for finishing and roughing. Like its little brother, it includes a flexible work light and adjustable eye guards. For the price, getting variable speed on an 8-inch grinder is impressive value.
What We Like
Variable Speed Control
This feature makes the tool incredibly versatile. You aren’t stuck with one speed, so you can adapt the machine to the material you are working on.
Powerful 5-Amp Motor
The stronger motor provides better torque, meaning it handles the larger 8-inch wheels without bogging down as easily as the 6-inch model.
Flexible Work Light
Good visibility is key to safe grinding, and the included light ensures you aren’t working in the shadows.
What We Don't Like
Quality Control
WEN offers great value, but occasionally units ship with slightly unbalanced wheels or minor cosmetic issues. It’s a trade-off for the low price point.
Product Specs
| Weight (pounds) | 41 |
| Dimensions (inches) | 16.5 x 10.5 x 16 |
| Grit | 36 and 80 |
| Wheel size (inches) | 8 |
| RPM | 2,000 to 3,450 (variable speed) |
| Motor power | 5 amps |
| Price | $$$ |
| Warranty | 2-year |
Our Ratings
JET IBG-8 8-Inch Industrial Bench Grinder
Best Industrial Bench Grinder
If you run a professional shop and need a grinder that will last a lifetime, the JET IBG-8 is the answer. This is an industrial-grade machine. It features a massive 1 HP motor that spins at 3,600 RPM, delivering serious torque that won’t stall under heavy load.
Everything about this grinder screams durability. It has heavy-duty cast iron construction, massive tool rests, and sealed bearings to keep the grit out. The safety guards have 2.5-inch dust ports, so you can hook up a dust collection system, a huge plus for keeping your shop air clean.
It is expensive, heavy, and overbuilt. But if you need reliability for daily use, the JET is in a league of its own.
What We Like
Industrial Power
The 1 HP motor is a beast. You can push hard against the wheels for heavy stock removal, and this motor won’t even flinch.
Dust Collection Ports
The built-in ports on the rear of the guards allow you to connect a vacuum system, keeping hazardous metal dust out of your lungs and off your workbench.
Built to Last
With a total cast iron build and high-quality components, this machine is designed to withstand the abuse of a professional metalworking shop.
What We Don't Like
Premium Price
This is a significant investment. Unless you are running a business or are a serious fabricator, it might be overkill for a home garage.
Product Specs
| Weight (pounds) | 44 |
| Dimensions (inches) | 21 x 13.75 x 14 |
| Grit | 36 and 60 |
| Wheel size (inches) | 8 |
| RPM | 3,600 |
| Motor power | 1.5 HP |
| Price | $$$$$ |
| Warranty | 2-year |
Our Ratings
SKIL 3380-01 6-Inch Bench Grinder
Best 6-Inch Bench Grinder
The SKIL 3380-01 sits comfortably in the middle ground between budget and pro tools. It sports a 2.1-amp motor running at 3,450 RPM, making it comparable to the WEN in terms of raw specs, but with a few nice upgrades.
Instead of a single lamp, SKIL integrated LED lights directly into the spark guards over each wheel. This provides excellent illumination right where you need it without a bulky lamp getting in the way.
The base is cast iron for stability, and it has rubber feet to dampen vibration. It comes with medium and coarse wheels, making it a solid “set it and forget it” tool for the home workshop.
What We Like
Built-In LED Lights
The integrated LEDs are a smart design choice. They shine directly on the grinding surface, eliminating shadows without requiring you to adjust a flexible neck.
Rubberized Feet
Vibration can be annoying with lighter grinders. The rubber feet help keep the SKIL stable and reduce the noise transfer to your workbench.
Good Value
It offers slightly better build quality and features than the absolute cheapest models while still remaining very affordable for the average homeowner.
What We Don't Like
Light Duty
Like the other 6-inch models, this is designed for intermittent DIY use. It works great for sharpening and light grinding but isn’t meant for heavy industrial work.
Product Specs
| Weight (pounds) | 8.48 |
| Dimensions (inches) | 15.4 x 10.75 x 8.5 |
| Grit | 36 and 60 |
| Wheel size (inches) | 6 |
| RPM | 3,450 |
| Motor power | 2.1 amps |
| Price | $ |
| Warranty | 1-year |
Our Ratings
Delta Power Tools 23-197 8-Inch Variable Speed Bench Grinder
Best Variable Speed Bench Grinder
Delta has a long history in American workshops, and the 23-197 is a fantastic variable speed grinder. With a 5-amp motor and a speed range of 2,000 to 3,400 RPM, it handles everything from delicate sharpening to heavy grinding.
A unique feature of this model is the integrated water tray built right into the base. This allows you to quench your workpiece conveniently to keep it cool, a small detail that saves you from setting up a separate cup of water.
It also features a dedicated drill bit rest milled into the tool rest, which helps you get the correct angle when sharpening bits. The cast iron construction keeps vibration low, and the variable speed dial is smooth and easy to access.
What We Like
Variable Speed Versatility
Being able to dial in the RPM gives you control over the finish and temperature of your workpiece. It makes the grinder useful for a wider range of materials.
Integrated Water Tray
This is a clever addition. Having a quench tray right on the tool encourages you to keep your metal cool, which results in better sharpening and safer handling.
Drill Bit Guide
Sharpening drill bits by hand is tricky. The milled guide helps take the guesswork out of the angle, making it easier to restore your dull bits.
What We Don't Like
Higher Price Point
You pay for the brand name and the extra features. It is significantly more expensive than the WEN variable speed model, though the build quality is generally higher.
Product Specs
| Weight (pounds) | 44.2 |
| Dimensions (inches) | 9.5 x 14.5 x 16.5 |
| Grit | 36 and 60 |
| Wheel size (inches) | 6 |
| RPM | 2,000 to 3,400 (variable speed) |
| Motor power | 5 amps |
| Price | $$$$ |
| Warranty | 5-year |
Our Ratings
| Product | Best | Weight | Dimensions | Grit | Wheel size | RPM | Motor power | Price | Warranty |
|---|---|---|---|---|---|---|---|---|---|
| Rikon Professional Slow Speed Bench Grinder | Best for Sharpening Chisels | 37.5 lbs | 16.38″ x 10.75″ x 11.25″ | 60 & 120 | 8″ | 1,750 | 0.5 HP | $$$ | 5-year |
| DeWALT DW756 Bench Grinder | Best for Woodworking | 28.5 lbs | 16.75″ x 11.38″ x 9.44″ | 36 & 60 | 6″ | 3,450 | 0.625 HP | $$ | 3-year limited |
| WEN 4276 Bench Grinder | Best Budget | 16 lbs | 14″ x 9.75″ x 15″ | 36 & 60 | 6″ | 3,450 | 2.1 amps | $ | 2-year |
| WEN 4280 Variable Speed Bench Grinder | Best 8-Inch | 41 lbs | 16.5″ x 10.5″ x 16″ | 36 & 80 | 8″ | 2,000 – 3,450 (variable speed) | 5 amps | $$$ | 2-year |
| JET IBG-8 Industrial Bench Grinder | Best for Polishing | 44 lbs | 21″ x 13.75″ x 14″ | 36 & 60 | 8″ | 3,600 | 1.5 HP | $$$$$ | 2-year |
| SKIL 3380-01 Bench Grinder | Best 6-Inch | 8.48 lbs | 15.4″ x 10.75″ x 8.5″ | 36 & 60 | 6″ | 3,450 | 2.1 amps | $ | 1-year |
| Delta Power Tools Bench Grinder | Best Variable Speed | 44.2 lbs | 9.5″ x 14.5″ x 16.5″ | 36 & 60 | 6″ | 2,000 – 3,400 (variable speed) | 5 amps | $$$$ | 5-year |
