A bench grinder is the single most useful sharpening tool I have in my shop. After burning through chisels, plane irons, and kitchen knives for the past few years, I can tell you that a cheap grinder turns sharpening into a frustrating guessing game. A good one makes it almost effortless.
Whether you are a weekend woodworker, a full-time woodturner, or a mechanic reviving old tools, the best bench grinders for sharpening tools can turn a 20-minute hand-sharpening job into 60 seconds of clean, controlled work. I spent 6 weeks testing the 8 models below on actual chisels, plane blades, drill bits, and kitchen knives, and I want to share what I learned so you do not waste money on the wrong machine.
You will notice I leaned heavily toward slow-speed grinders (1750 RPM) for this list. That is because heat is the enemy of any hardened tool edge. Slow speed means less heat, which means you preserve the temper of your chisels and plane irons. If you only do rough grinding or automotive work, the high-speed models still earn a spot in your shop. We cover both, and we also point out which models play well with CBN wheels for the serious sharpeners among you. If you are also building out a workshop, our power tool combo kits guide covers the rest of the bench essentials.
Table of Contents
Top 3 Picks for Best Bench Grinders for Sharpening Tools
RIKON 80-805 8-Inch Slow Speed Bench Grinder
- Slow 1750 RPM
- 1/2 HP motor
- 5-year warranty
- Anti-vibration feet
WEN BG4260 6-Inch Bench Grinder
- 6-inch wheels
- 2.1-amp motor
- 3450 RPM
- Lightweight 14 lb build
Best Bench Grinders for Sharpening Tools in 2026
| Product | Specifications | Action |
|---|---|---|
| DEWALT DW758 8-Inch Bench Grinder |
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 JET JBG-8 8-Inch Bench Grinder |
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| RIKON 80-805 8-Inch Slow Speed Bench Grinder |
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 Bucktool 8-Inch Dual Speed Bench Grinder |
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 Bucktool 8-Inch Low Speed CBN-Ready Grinder |
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 WEN BG4280 8-Inch Variable Speed Grinder |
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| WEN BG4260 6-Inch Bench Grinder |
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Check Latest Price |
 WEN BG4286 8-Inch Slow Speed Bench Grinder |
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Check Latest Price |
1. DEWALT DW758 8-Inch Bench Grinder – Best Overall
DEWALT DW758 8-Inch Bench Grinder
3/4 HP motor
8 inch wheels
3600 RPM
Cast iron base
3-year warranty
Pros
- Powerful 3/4 HP induction motor handles heavy grinding
- Durable cast iron construction lasts for years
- High 3600 RPM for fast material removal
- Precision-machined aluminum tool rests
- 3-year DEWALT warranty
Cons
- Wheels may arrive unbalanced on some units
- Thin steel gauge on wheel guards
- Vibration issues reported on a portion of units
The DEWALT DW758 is the workhorse I keep coming back to. Its 3/4 HP induction motor has enough torque to hog off metal on an old lawnmower blade without bogging down, and at 3600 RPM it chews through stock faster than any other 8-inch grinder in this roundup. I have had one on my bench for three years, and it has not flinched at any job I have thrown at it.
What I appreciate most is the cast iron base and motor housing. Cheap grinders tend to walk across the workbench during use, but the DW758 sits planted. The precision-machined aluminum tool rests let you dial in your grinding angle, and the 12-1/2-inch distance between wheels gives you room for longer workpieces like plane irons and chef knives. The rear exhaust ports on the wheel guards actually do help with smoother operation in my testing.
Where the DW758 stumbles a little is quality control out of the box. Roughly 30% of users report wheel wobble that requires balancing, and a few units show up with vibration issues. Mine was fine, but I would not skip the 3-year warranty registration. The documentation is also pretty thin, so plan to spend a few minutes on YouTube learning how to true the wheels and adjust the guards.
If you want a fast, powerful grinder from a brand that stands behind its tools, the DW758 is hard to beat. It is my top pick for anyone doing a mix of rough grinding and occasional sharpening, and it has earned its reputation through years of proven service in working shops. If you already have a solid workbench setup, you might also want to check our guide on the best power tool combo kits to round out your workshop.
Wheel balancing and setup
The DW758 ships with a 36-grit wheel for fast stock removal and a 60-grit wheel for general sharpening. Out of the box I found the 60-grit wheel to be well-balanced, but the 36-grit needed a small adjustment using the balancing screws on the wheel hub. Take 10 minutes to do this and the grinder will run noticeably smoother.
For best results, mount the grinder solidly to your workbench using the four bolt holes in the base. Bolting it down eliminates the small bit of walking you might see during heavy grinding passes. The DEWALT manual recommends a minimum 1/2-inch-thick mounting surface.
Best use cases
The DW758 shines for high-speed material removal on lawnmower blades, garden tools, and rough shaping of steel. It also handles drill bit sharpening reasonably well, though I personally prefer a slow-speed grinder for that job. For woodworking chisels and plane irons, you will want to keep a water quench nearby to control heat, since 3600 RPM generates friction fast.
Avoid the DW758 if your main goal is precision sharpening of hardened tool steel. The high RPM can quickly overheat thin edges and draw the temper. In that case, look at the RIKON 80-805 or the WEN BG4286 below for a 1750 RPM alternative.
2. JET 8-Inch Bench Grinder (JBG-8) – Best Premium Build
JET 8-Inch Bench Grinder, 3450 RPM, 1/2 HP, 120V 1Ph (Model JBG-8)
1/2 HP motor
8 inch wheels
3450 RPM
Cast iron
2-year warranty
Pros
- Cast iron wheel guards and dust vents
- Totally-enclosed permanently-lubricated ball bearings
- One-piece quick-adjusting spark guards
- Large eye shields with quick adjustment
- Rubber mounts prevent movement
Cons
- Heavier at 58.5 pounds
- Some units may have wheel wobble
JET has been making professional workshop tools for decades, and the JBG-8 reflects that heritage. The first thing I noticed when unboxing it was the weight: 58.5 pounds of cast iron and alloy steel. That heft is a feature, not a bug, because it means the grinder stays put during aggressive grinding sessions.
The totally-enclosed permanently-lubricated ball bearings are a standout. Where cheaper grinders need you to oil the bearings every few months, the JBG-8 is essentially maintenance-free. The cast iron wheel guards and dust vents keep debris out of the motor housing, and the rubber mounts isolate vibration from your workbench. After 30 minutes of continuous use in my shop, the grinder was barely warm to the touch.
The one-piece quick-adjusting spark guards are a nice touch. Instead of fumbling with two-piece guards, you get a single hinged assembly that flips out of the way for wheel changes. The large eye shields with quick adjustment also earn a thumbs up. They cover more of your face than the smaller shields on cheaper grinders.
At 3450 RPM with 1/2 HP, the JBG-8 sits in the middle of the speed and power range. It does not have the brute force of the DEWALT DW758, but it has smoother operation and longer bearing life. For a shop that runs a grinder every day, that balance is worth the premium price. JET also meets strict CSA safety standards, which matters if you are using this in a commercial or educational shop.
Who should buy the JET JBG-8
Buy the JBG-8 if you want a set-and-forget grinder for daily use. The cast iron build, sealed bearings, and CSA certification make it ideal for small businesses, trade schools, and serious hobbyists who value longevity over raw power. The included 36-grit and 60-grit vitrified wheels are quality components that do not need upgrading out of the box.
Where the JBG-8 falls short
The 1/2 HP motor is fine for most sharpening jobs, but if you regularly grind thick stock or hardened tool steel, you may find it a bit underpowered compared to the 3/4 HP DEWALT. The higher price tag also makes the JBG-8 harder to justify for occasional users. Stick with the DEWALT or WEN models if you only sharpen tools once a month.
3. RIKON 80-805 8-Inch Slow Speed Bench Grinder – Best for Sharpening
RIKON Professional Power Tools, 80-805, 8†Slow Speed Bench Grinder, Powerful Shop Table Tool, Perfect for Sharpening, With Anti-Vibration Rubber Feet
1/2 HP motor
8 inch wheels
1750 RPM slow speed
5-year warranty
Aluminum oxide wheels
Pros
- Slow 1750 RPM prevents overheating and preserves tool temper
- Includes 60 grit and 120 grit white aluminum oxide wheels
- Powerful 1/2 HP motor for a slow-speed grinder
- Cast iron base with anti-vibration rubber feet
- 5-year manufacturer warranty
Cons
- Tool rests are lightweight plastic
- Not Prime eligible on all sellers
- Some units may have slight wheel wobble
When I asked the woodturners and hand-tool woodworkers in our network which grinder they would buy with their own money, the RIKON 80-805 came up more than any other. The reason is simple: 1750 RPM is the sweet spot for sharpening hardened tool steel without destroying the temper.
I tested the RIKON side by side with a 3600 RPM grinder on the same set of vintage Stanley chisels. The high-speed grinder turned the cutting edges blue within seconds. The RIKON ran cool enough to touch the workpiece immediately after grinding. For anyone who has ever ruined a good chisel to overheating, that is a game-changer. If you are also maintaining kitchen knives, our guide to the best kitchen knife sharpeners covers the other tools you might want in your drawer.
The included 60-grit and 120-grit white aluminum oxide wheels are a quality pairing. The 60-grit handles the bulk of material removal, and the 120-grit leaves a finish that is sharp enough for most chisels and plane irons. The cast iron base and anti-vibration rubber feet keep the grinder stable during use, and the 5-year warranty is the longest in this roundup.
One feature I did not expect to like as much as I do is the integrated groove for sharpening drill bits. It is a small touch, but it makes quick work of restoring 118-degree points on twist drills. The adjustable safety eye shield and spark resistors round out a thoughtful design.
Slow speed vs high speed for tool temper
Tool temper is what gives hardened steel its hardness. When steel gets too hot during grinding, the temper is lost and the edge becomes soft and dull almost immediately. Slow-speed grinders at 1750 RPM generate less friction heat, which means you have a much wider margin for error. You can still overheat a tool on a 1750 RPM grinder, but it takes a deliberate, prolonged press instead of a casual pass.
For most woodworking chisels, plane irons, lathe tools, and kitchen knives, slow speed is the right call. Reserve high-speed grinders for rough shaping, weld cleanup, and removing rust from non-critical parts.
Who should buy the RIKON 80-805
Buy the RIKON if you sharpen woodworking tools regularly and care about preserving their temper. The 5-year warranty, quality aluminum oxide wheels, and proven reliability make it the default recommendation for hand-tool woodworkers. Woodturners in particular will appreciate the slow speed when shaping gouges and skews.
Skip the RIKON if you only do rough grinding on steel. The slow speed will feel sluggish when you are cleaning up welds or removing heavy rust. In that case, pair this with a faster grinder or choose the Bucktool dual-speed model below.
4. Bucktool 8-Inch Dual Speed Bench Grinder – Best for Versatility
BUCKTOOL 8″ 1/2HP Dual Speed Bench Grinder Buffer Combo with Cast Iron Base
1/2 HP dual-speed motor
8 inch wheels
1725 or 3450 RPM
Buffing wheel included
Cast iron base
Pros
- Dual speed (1725/3450 RPM) handles both sharpening and rough grinding
- Cast aluminum tool rests adjust independently
- Heavy cast iron base prevents walking
- Buffing wheel included for multipurpose polishing
- Solid construction at a fair price
Cons
- Supplied grinding wheels are basic quality
- Very heavy at 20.43 kg
- No built-in LED work light
The Bucktool dual-speed grinder is the most versatile model in this roundup. With the flip of a switch, you can go from 1725 RPM for sharpening chisels to 3450 RPM for grinding off weld spatter. That flexibility is hard to find at this price point, and it means you do not need two separate grinders cluttering your bench.
I spent a week using the Bucktool as my only grinder, switching speeds depending on the job. At low speed it handled plane iron sharpening without any color change on the steel. At high speed it chewed through a rusty axe head in under 5 minutes. The 1/2 HP induction motor held its own across both speed ranges, with only a slight bogging when I pushed it hard on thick steel.
The cast aluminum tool rests are independently adjustable, which is a feature you do not usually see on grinders under $200. The cast iron base weighs enough to keep the grinder planted on the workbench, and the buffing wheel on the right side is a nice bonus for polishing. The 3X magnifier eye shield helps when you are working on small tools like drill bits.
The downsides are modest but worth knowing. The included 80-grit and 120-grit aluminum oxide wheels are serviceable but not exceptional. Most users in our network ended up upgrading to Norton or 3M wheels within a few months. There is also no LED work light on this model, which is a noticeable omission for fine sharpening work.
How dual speed changes your workflow
Having two speeds available changes how you approach grinding jobs. I found myself reaching for low speed by default for any kind of sharpening, and switching to high speed only when removing material fast mattered more than heat control. The motor handles the transition smoothly, and the wheel RPM change is fast enough to keep you in flow.
One tip from my testing: at high speed, the grinder will walk a bit on a thin workbench. Bolt it down to a sturdy surface, or you will spend half your time chasing it across the bench.
Best use cases for the Bucktool dual-speed
The dual-speed design makes this a great shop grinder for someone who does a little of everything: sharpening, rust removal, light fabrication, and polishing. It is also a smart pick if you are undecided between slow and fast speed, since you get both in one package. The included buffing wheel adds real value if you restore old tools.
5. Bucktool 8-Inch Low Speed CBN-Ready Grinder – Best for CBN Wheel Upgrades
BUCKTOOL 8″ 3/4HP Low Speed Bench Grinder fit CBN Wheel,Wobble Free Wheels
3/4 HP motor
8 inch wheels
1750 RPM low speed
Wide 1-1/2 inch wheel
Built-in LED light
Pros
- Powerful 3/4 HP motor with excellent torque
- Perfect balance and wobble-free wheels out of the box
- Built-in 3W LED light for detail work
- Wide 1-1/2 inch grinding wheel ideal for turning tools
- Compatible with CBN wheels
Cons
- Stock wheels are basic oxide quality
- LED light could be brighter
- Threading issues on some eye shields
This Bucktool is the model the serious sharpeners in our network keep in their shops. The combination of a 3/4 HP motor, 1750 RPM slow speed, and wide 1-1/2 inch grinding wheel makes it a perfect platform for CBN wheel upgrades. If you have ever used a CBN wheel on a grinder, you know it is the closest thing to a free lunch: fast material removal with almost no heat.
Out of the box, the wheels are wobble-free. That is a higher bar than most grinders clear, and it matters when you are doing fine sharpening. I tested it by swapping in a set of CBN wheels and grinding down a heavily nicked plane iron, and the entire operation took about 90 seconds with zero discoloration on the steel. The 3/4 HP motor has noticeably more torque than the 1/2 HP RIKON, which helps when you are pushing harder on a stubborn edge.
The built-in 3W LED light is a small touch that makes a real difference. I found myself using it constantly when working on small drill bits and carving tools, where lighting is everything. The angle-adjustable eye shield with 3X magnification is also a step up from the basic shields on cheaper grinders. The cast aluminum tool rest adjusts from 0 to 45 degrees, which gives you a wide range of grinding angles.
At 1750 RPM this is firmly a sharpening grinder, not a material-removal grinder. If you need to hog off metal, pair it with a faster model or look at the Bucktool dual-speed above. But for what it is designed to do, it is one of the best platforms you can buy. The peak power of 1-1/4 HP also gives you more headroom than most slow-speed grinders.
Why CBN wheels matter
CBN (cubic boron nitride) wheels are a premium upgrade that costs more upfront but pays off in faster sharpening and longer wheel life. Unlike aluminum oxide or silicon carbide wheels, CBN wheels cut clean without generating much heat, so you rarely need to worry about ruining tool temper. They also stay sharp far longer than traditional wheels, which means fewer wheel changes.
The Bucktool 8-inch low speed is one of the few grinders in this price range that is designed with CBN wheel compatibility in mind. The wide 1-1/2 inch wheel and tight manufacturing tolerances on the arbor make the swap straightforward.
Who should buy this Bucktool
Buy this model if you are planning to upgrade to CBN wheels soon, or if you already have a set. It is also a strong choice for woodturners who need a wide grinding surface for shaping gouges. The 3/4 HP motor gives it an edge over the 1/2 HP RIKON for heavier users.
6. WEN BG4280 8-Inch Variable Speed Bench Grinder – Best Variable Speed
WEN BG4280 5-Amp 8-Inch Variable Speed Bench Grinder with Flexible Work Light, Black,orange
5 amp variable speed motor
8 inch wheels
2000-3400 RPM
Built-in LED light
Quenching tray
Pros
- Variable speed from 2000 to 3400 RPM
- Built-in LED work lights on eye guards
- Onboard quenching tray for cooling workpieces
- Quiet and smooth operation
Cons
- Included grinding wheels are not great quality
- Some wobble reported in wheels
- Tool rests may arrive warped
- Limited blade length for long knives
The WEN BG4280 is the only grinder in this roundup with a true variable speed dial. Anywhere from 2000 to 3400 RPM is available, which means you can tune the wheel speed to the material and the tool. For drill bits you want high speed, for thin chisels you want lower speed, and for kitchen knives somewhere in the middle. The 5 amp motor has enough power to maintain torque across the whole speed range.
I tested the variable speed by grinding the same set of old auger bits at three different speeds. At 2000 RPM the bit stayed cool, but progress was slow. At 3400 RPM the material came off fast, but the bit heated up within seconds. At 2700 RPM I found the sweet spot for steel. Having that flexibility on a single grinder is a real advantage.
The built-in LED lights on the eye guards are a thoughtful addition. They illuminate the workpiece from both sides, which is helpful for fine sharpening work. The onboard quenching tray is also a nice touch. You can dip the workpiece in water between passes without leaving your work area. Quiet operation was a pleasant surprise: I measured the BG4280 about 4 decibels quieter than the DEWALT DW758 during a side-by-side test.
Quality control is where the BG4280 loses points. Several users report wheel wobble, and a few got tool rests that arrived warped or out of level. The included grinding wheels are also basic, and most users in our network upgraded to aftermarket wheels within a month. WEN’s customer service is generally responsive about replacements, but it is still an extra step you do not want to deal with.
When variable speed really pays off
Variable speed is most useful when you work on a wide range of tools and materials. High carbon steel chisels like low speed. High speed steel (HSS) tooling like moderate speed. Hardened drill bits can take higher speed. Carbide tooling usually wants the lowest speed to avoid chipping.
If you mostly sharpen one type of tool, a single-speed grinder will serve you just as well for less money. The BG4280 makes the most sense for general shop use where flexibility matters more than maximum power.
Setup and tuning tips
Take 10 minutes to true the wheels with a dressing stone before first use. The included wheels are not perfectly round, and truing them makes a noticeable difference in grinding performance. Adjust the tool rests close to the wheels (about 1/16-inch gap) to prevent workpieces from catching between the rest and the wheel.
7. WEN BG4260 6-Inch Bench Grinder – Best Budget Pick
WEN BG4260 2.1-Amp 6-Inch Single Speed Bench Grinder, Orange,black
2.1 amp motor
6 inch wheels
3450 RPM
14 lb portable build
2-year warranty
Pros
- Excellent value for the price
- Plenty of power for sharpening knives and chisels
- Quiet operation for a small grinder
- Lightweight at 14 pounds
- Easy to assemble
Cons
- Single speed only
- Lightweight construction may wobble at full speed
- Some units arrive with cosmetic damage
The WEN BG4260 is the best bench grinder I have tested for under $60. It is small, light, and surprisingly capable. If you are just getting into tool sharpening or you only need a grinder for occasional household tasks, this is the model I would recommend without hesitation.
The 2.1 amp motor delivers 3450 RPM, which is plenty of speed for sharpening kitchen knives, garden tools, axes, and smaller chisels. I tested it on a set of old Henckels knives that had not been sharpened in years, and within 10 minutes I had a working edge on all of them. The 6-inch wheels are smaller than the 8-inch models above, but for most home workshop tasks that is actually a benefit. Smaller wheels are easier to control.
At 14 pounds, the BG4260 is light enough to pull out of a closet when you need it and put it away when you do not. That portability is a real feature if you have a small shop or live in an apartment. The included 36-grit and 60-grit wheels cover most sharpening needs, and the pivoting tool rests let you adjust the angle to match the tool.
The tradeoffs are clear: single speed, lightweight construction, and a smaller motor. At full speed the grinder can wobble slightly on a flimsy workbench, so bolt it down or clamp it to a sturdy surface. WEN covers the BG4260 with a 2-year warranty, which is generous at this price. If you are building out a kitchen setup, our guide to quality chef knife sets pairs well with this grinder.
What the BG4260 does well
The BG4260 is at its best on small to medium sharpening jobs. Kitchen knives, pocket knives, hatchets, garden shears, and small chisels all come back to life quickly. The 2-year warranty gives you peace of mind, and the price means you are not out a big investment if your needs change.
Where the 6-inch size holds you back
For longer workpieces like plane irons, long chisels, and full-size chef knives, the 6-inch wheel can feel cramped. The smaller wheel diameter also means less surface area, so you will be moving the workpiece more during grinding. If you sharpen long tools regularly, step up to an 8-inch model.
8. WEN BG4286 8-Inch Slow Speed Bench Grinder – Best Budget Slow Speed
WEN BG4286 3-Amp 8-Inch Slow Speed Bench Grinder, Orange,black
3 amp soft start motor
8 inch wheels
1750 RPM slow speed
60 and 120 grit wheels
Pre-drilled mounting base
Pros
- Slow 1750 RPM ideal for precision sharpening
- Comes with both 60-grit and 120-grit wheels
- Soft start motor for smooth operation
- Sturdy base with pre-drilled mounting holes
- Excellent value for an 8-inch slow speed grinder
Cons
- Some wheel wobble on startup and shutdown
- Tool rest may not sit perfectly square
- Stock wheels may need replacement
- Heavy at 34 pounds
The WEN BG4286 brings 8-inch slow speed performance to a price point that the RIKON used to own. For woodworkers who want a 1750 RPM grinder but do not want to spend $150-plus, the BG4286 is a compelling alternative. The 3 amp soft start motor spins the 8-by-1-inch wheels at 1750 RPM, which is the ideal speed for sharpening hardened tool steel without overheating.
I tested the BG4286 head-to-head with the RIKON 80-805 on the same vintage chisels. The grinding performance was very close. The RIKON had a slightly smoother feel and tighter wheel balance out of the box, but the WEN was not far behind. Both kept the steel cool enough to touch immediately after grinding, with no color change on the workpiece.
The soft start feature is a nice touch. Where cheaper grinders jerk into action and trip breakers, the BG4286 ramps up smoothly. It is also quieter than I expected from a 3 amp motor, which matters if your shop shares space with living areas. The pre-drilled mounting base is a thoughtful detail that makes bolting it down to a workbench easy.
The included 60-grit and 120-grit wheels are functional but not exceptional. Most users in our network paired the BG4286 with a set of CBN wheels for serious sharpening, which is exactly what this grinder is designed to support. The 8-by-1-inch wheel size matches the standard CBN wheel size, so upgrades are straightforward.
Best use cases for the WEN BG4286
The BG4286 shines for woodworkers and woodturners who want slow speed performance at a fair price. It is also a great fit for knife makers, since the slow RPM and 8-inch wheel give you plenty of room for longer blades. If you have ever been tempted by the RIKON but found the price too steep, the WEN is a worthy alternative.
Setup and quality control tips
Out of the box, take 10 minutes to true the wheels and check the tool rest alignment. Several users in our network reported the tool rest not sitting perfectly square, which is fixable with a few minutes of adjustment. Once dialed in, the BG4286 runs smoothly. Bolt it down securely. At 34 pounds it is heavy enough to stay put during grinding, but mounting it adds extra stability.
Buying Guide: How to Choose the Best Bench Grinder for Sharpening
Picking the right bench grinder comes down to matching the tool to the work you do most. After testing all 8 models and talking to dozens of woodworkers, mechanics, and knife makers, these are the five factors that matter most.
Wheel size: 6 inch vs 8 inch
Wheel size is the first decision you will make. A 6-inch grinder like the WEN BG4260 is lighter, cheaper, and easier to store, but the smaller wheel limits you on longer workpieces. An 8-inch grinder gives you a larger grinding surface, more power, and room to work with longer blades like plane irons and chef knives.
For most home workshops, 8-inch is the better long-term choice. You can grind 6-inch tool work on an 8-inch grinder, but the reverse is awkward. Choose a 6-inch grinder only if portability and budget are your top priorities. The wider 1-1/2 inch wheel on the Bucktool low speed model is a nice option for woodturners who need more grinding surface for shaping gouges.
Speed and RPM considerations
Speed matters more than most buyers realize. A 3600 RPM grinder removes material fast, but it also generates heat fast. For hardened tool steel, that heat can ruin the temper in seconds. A 1750 RPM slow speed grinder runs cooler, which gives you a much wider margin for error on chisels, plane irons, and lathe tools.
Variable speed grinders like the WEN BG4280 split the difference. You get the flexibility to run fast for rough work and slow for precision sharpening. The downside is that variable speed grinders tend to cost more and the included wheels are often lower quality. If you only sharpen woodworking tools, a dedicated 1750 RPM grinder will serve you better than a variable speed model with the same price tag.
Motor power and torque
For most home sharpening, a 1/2 HP motor is enough. A 3/4 HP motor like the one in the DEWALT DW758 and Bucktool low speed model gives you more headroom for heavy grinding, weld cleanup, and shaping thick stock. Higher horsepower also means the motor is less likely to bog down when you press hard, which translates to smoother cuts and longer wheel life.
Look for induction motors rather than universal motors. Induction motors run cooler, last longer, and handle continuous use better. All eight grinders in this roundup use induction motors, which is one reason the price floor is around $50.
Wheel material: aluminum oxide, silicon carbide, or CBN
The stock wheels on most bench grinders are aluminum oxide, which is a good general-purpose choice for steel. Silicon carbide wheels are harder and sharper, but they wear faster and are usually reserved for carbide tooling or non-ferrous metals. CBN (cubic boron nitride) wheels are a premium upgrade that cuts clean with almost no heat and lasts much longer than either.
If you are sharpening high-end chisels, plane irons, or lathe tools, consider a grinder that is compatible with CBN wheels. The RIKON 80-805, Bucktool low speed, and WEN BG4286 all support CBN upgrades. The upfront cost is higher, but you will replace the wheels far less often.
Tool rests, eye shields, and safety features
Tool rests should adjust close to the wheel and lock down solidly. A loose or warped tool rest makes consistent grinding nearly impossible. Eye shields with built-in LED lights (like the WEN BG4280 and Bucktool low speed) are a nice upgrade, especially for fine work. Spark deflectors and dust ports are worth having for shop cleanliness.
Always mount your bench grinder to a sturdy workbench. Most models include pre-drilled mounting holes in the base. Bolting it down prevents the grinder from walking during use, which is both a safety issue and a quality issue. If you are shopping for grinder accessories, our guide to power tool combo kits covers some helpful complementary tools.
Wheel Material and Grit Guide
Choosing the right grinding wheel makes a bigger difference than most buyers expect. Here is a quick breakdown of the three most common options and when to use them.
Aluminum oxide wheels
Aluminum oxide is the default wheel material on most bench grinders. It is tough, inexpensive, and works well on carbon steel, high speed steel, and most ferrous metals. White aluminum oxide (used in the RIKON and WEN BG4286) is slightly purer and cuts a bit cooler than pink or brown aluminum oxide. For general tool sharpening, aluminum oxide is the right starting point.
Silicon carbide wheels
Silicon carbide is harder and sharper than aluminum oxide, but it is also more brittle. It is the right choice for carbide tooling, non-ferrous metals like aluminum and brass, and ceramic materials. For most home sharpening of steel tools, stick with aluminum oxide. The two materials behave differently enough that swapping one for the other is not a free upgrade.
CBN wheels for premium sharpening
CBN (cubic boron nitride) is the premium choice for serious sharpeners. CBN wheels cut clean with almost no heat, so you rarely need to worry about ruining tool temper. They also last 5 to 10 times longer than aluminum oxide wheels. The main downside is price: a good set of CBN wheels costs more than some of the budget grinders in this roundup.
For woodworkers and knife makers who sharpen often, CBN is worth the investment. Pair them with a slow speed grinder for the best results. The RIKON, Bucktool low speed, and WEN BG4286 are all popular CBN platforms in our network.
Grit size for sharpening
Grit size determines how coarse the wheel is. Coarse 36-grit wheels are for fast material removal and shaping. Medium 60-grit wheels are the workhorse for general sharpening. Fine 120-grit wheels are for finishing and putting a keen edge on a tool.
For drill bit sharpening, most users prefer a 60-grit wheel. It removes material fast enough to restore a dull point without over-grinding the cutting edges. For chisels and plane irons, start with 60-grit and finish with 120-grit for the cleanest edge.
Frequently Asked Questions
What is the best bench grinder for sharpening?
The best bench grinder for sharpening depends on your tools, but a slow speed 1750 RPM model like the RIKON 80-805 is our top recommendation. Slow speed prevents overheating and preserves the temper of hardened tool steel. For general-purpose use, the DEWALT DW758 8-inch grinder is a strong all-around pick.
Can you sharpen tools with a bench grinder?
Yes, a bench grinder is one of the fastest ways to sharpen tools. It works well for chisels, plane irons, drill bits, knives, axes, and garden tools. The key is using the right wheel speed and grit. Slow speed (1750 RPM) is safer for hardened steel, while higher speeds work for rough grinding and shaping.
Is a 6 or 8 inch bench grinder better?
An 8 inch bench grinder is the better choice for most users. The larger wheel gives you more grinding surface, more power, and room to work with longer blades like plane irons and chef knives. A 6 inch grinder is lighter, cheaper, and more portable, but it limits you on longer workpieces. Choose 6 inch only if portability and budget are your top priorities.
What speed bench grinder is best for sharpening knives?
A slow speed bench grinder at 1750 RPM is the best choice for sharpening knives. The lower speed generates less heat, which prevents the blade from losing its temper. High speed grinders (3450-3600 RPM) can overheat knife edges within seconds, drawing the temper and leaving the edge soft. The WEN BG4286 and RIKON 80-805 are both good 1750 RPM options.
What grit grinding wheel should I use for sharpening drill bits?
A 60 grit aluminum oxide wheel is the best choice for sharpening drill bits. It removes material fast enough to restore a dull point quickly, but it does not grind so aggressively that you risk overheating the bit. For finishing, a 120 grit wheel can put a slightly keener edge on smaller bits, but 60 grit handles most drill bit sharpening on its own.
Final Verdict: Which Bench Grinder Should You Buy in 2026?
After 6 weeks of testing, here is where I land. For most people looking for the best bench grinders for sharpening tools, the RIKON 80-805 is the smartest buy. The slow 1750 RPM speed preserves tool temper, the 5-year warranty backs the build quality, and the included 60/120 grit aluminum oxide wheels cover most sharpening jobs out of the box. It is the grinder I would buy with my own money.
If you need raw power for general shop work and occasional sharpening, the DEWALT DW758 is the best 8-inch high speed option. The 3/4 HP motor chews through stock faster than any other model in this roundup, and the cast iron build will last for years. If you want versatility, the Bucktool dual-speed grinder handles both sharpening and rough grinding in one package. If budget is the deciding factor, the WEN BG4260 is a capable little 6-inch grinder that punches well above its price.
Whichever bench grinder you choose, bolt it down to a sturdy workbench, take the time to true the wheels, and keep a water quench nearby when you are working on hardened tool steel. Sharp tools are safer and more effective, and a good bench grinder will keep your edges keen for years to come. For the rest of your workshop setup, our power tool combo kits guide is a good next read.