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A 6-inch bench grinder is the smallest grinder most shops can actually use: compact enough for a crowded bench, cheap enough to buy on impulse, and strong enough for drill bits, chisels, mower blades and rust removal. It is also the grinder many new woodturners already own when they start asking how to sharpen a bowl gouge.
The thing to know before buying is speed. The common 6-inch models all run at about 3,400 to 3,450 RPM, and small motors bog down when you lean on them. For general sharpening that is fine. For woodturning tools, it means a lighter touch and more care with heat. Below are four 6-inch grinders from WEN, DEWALT and JET, with the specs each maker or retailer publishes, and an honest look at when an 8-inch slow-speed grinder is the better buy.
Quick picks
- Best Budget: WEN BG4276. Best for a low-cost grinder with a work light for occasional sharpening and cleanup.
- Best Variable Speed 6-Inch: WEN BG625V. Best for dialing speed down to 2,000 RPM on delicate edges.
- Best Heavy-Duty: DEWALT DW756. Best for daily use, with a 5/8 HP induction motor and cast iron base.
- Best Cast-Iron Build: JET JBG-6 (577101). Best for a solid, low-vibration grinder with cast iron wheel guards.
Comparison table
| Grinder | Best for | Speed | Wheels included | Arbor | Warranty | Amazon |
|---|---|---|---|---|---|---|
| WEN BG4276 | Budget | Up to 3,450 RPM | 6 x 3/4 in., 36 and 60 grit | 1/2 in. | 2 years | See options |
| WEN BG625V | Variable speed | 2,000–3,400 RPM | 6 x 3/4 in., 36 and 80 grit | 1/2 in. | 2 years | Check price |
| DEWALT DW756 | Heavy-duty | 3,450 RPM | 6 in., 36 and 60 grit | Check manual | See listing | See options |
| JET JBG-6 (577101) | Cast-iron build | 3,450 RPM | 6 x 3/4 in., 36 and 60 grit | 1/2 in. | 2 years | Check price |
The best 6-inch bench grinders, reviewed
1. WEN BG4276: Best Budget
Who it's for: homeowners and new woodworkers who need a grinder for occasional jobs and do not want to spend much.
WEN's BG4276 uses a 2.1-amp motor to turn two 6 x 3/4-inch wheels at up to 3,450 RPM on a 1/2-inch arbor. It ships with a 36-grit wheel for fast removal and a 60-grit wheel for general grinding, adjustable eye guards and a flexible work light that points at the wheel. WEN says the wheel guards come off easily for wheel changes, and it backs the grinder with a two-year warranty. Amazon's listing puts it at about 16 lb.
That light weight is both the appeal and the limit. A 16 lb grinder needs to be bolted down or it will walk, and a 2.1-amp motor slows quickly under pressure. For touching up a chisel or cleaning a bolt it is all you need.
Pros
- Very low cost of entry
- Flexible work light included
- Two wheels: 36 and 60 grit
- Two-year warranty
Cons
- Light motor bogs under heavy pressure
- 3,450 RPM is fast for turning tools
- Needs to be bolted down
WEN BG4276 2.1-Amp 6-Inch Single Speed Bench Grinder with Flexible Work Light
by WEN
Currently unavailable on Amazon
2. WEN BG625V: Best Variable Speed 6-Inch
Who it's for: anyone who wants a small grinder that can slow down for fine edges and speed up for heavy removal.
The BG625V adds a speed dial. Its 2.5-amp motor runs anywhere from 2,000 to 3,400 RPM, and it comes with 6 x 3/4-inch wheels in 80 and 36 grit on 1/2-inch arbors, pivoting tool rests, adjustable eye guards and a flexible work light. WEN covers it for two years.
Two thousand RPM is still faster than the 1,750 RPM the American Association of Woodturners (AAW) recommends for turning tools, but it is a real step down from 3,400, and the 80-grit wheel is a better sharpening wheel than the usual 60. If you want variable speed on a bigger wheel, see our guide to the best variable speed bench grinders.
Pros
- Variable speed from 2,000 to 3,400 RPM
- 80-grit wheel included instead of 60
- Pivoting rests for angled grinding
- Work light and two-year warranty
Cons
- Low end is still above 1,750 RPM
- Small 3/4-inch wheels
- Costs more than single-speed 6-inch models
WEN BG625V 2.5-Amp 6-Inch Variable Speed Bench Grinder with Flexible Work Light
by WEN
3. DEWALT DW756: Best Heavy-Duty
Who it's for: shops that use a grinder every day and want it to hold speed under load.
The DW756 is the long-running 6-inch grinder in DEWALT's lineup. It uses a 5/8 HP induction motor running at 3,450 RPM, with an industrial cast iron base and motor housing and precision-machined adjustable aluminum tool rests. It includes 36- and 60-grit wheels, eye shields and spark deflectors, and Amazon's listing gives about 12-1/2 inches between the wheels, which leaves room to work long tools on either side. The listing mentions a one-year full warranty; check DEWALT's current terms when you buy.
The DW756 is noticeably heavier than budget 6-inch grinders, which is exactly what you want for vibration control. Its main drawback for woodturners is the same as every 6-inch model: single speed at 3,450 RPM. Amazon stock on this model comes and goes, so check availability.
Pros
- 5/8 HP induction motor holds speed under load
- Cast iron base and motor housing
- Machined aluminum tool rests
- Good spacing between wheels
Cons
- Single speed, 3,450 RPM
- Stock gray wheels are coarse for fine edges
- Amazon availability varies
DEWALT DW756 6-Inch Bench Grinder
by DEWALT
Currently unavailable on Amazon
4. JET JBG-6 (577101): Best Cast-Iron Build
Who it's for: buyers who want a solid, quiet-running grinder from a woodworking machinery brand.
JET's 6-inch grinder (part number 577101, listed as JBG-6) turns 6 x 3/4-inch vitrified wheels at 3,450 RPM on a 1/2-inch bore. It ships with fine 60-grit and coarse 36-grit wheels, cast iron wheel guards with dust vents, and totally enclosed ball bearings, and the listing gives a two-year limited warranty. Retail listings disagree on the motor rating (one title says 1/4 HP while the spec text says 1/2 HP), so we leave horsepower out and point you to JET's manual.
The cast iron guards and dust vents are the reason to choose it. Dust ports let you hook up a shop vacuum, which the AAW recommends for grinders, kept separate from your wood dust collector because grinding throws sparks.
Pros
- Cast iron wheel guards with dust vents
- Enclosed ball bearings
- Standard 1/2-inch bore for replacement wheels
- Two-year limited warranty
Cons
- Single speed, 3,450 RPM
- Conflicting horsepower in listings
- No work light
Buying guide: choosing a 6-inch bench grinder
Speed: the number that matters most
The AAW's Safety Guidebook for Woodturners says about 1,750 RPM is the best single speed for sharpening turning tools, and that the common 3,600 RPM grinder is much too fast for efficient sharpening. None of the 6-inch grinders here gets that low. That does not make them useless, but it changes how you use them.
A smaller wheel helps a little. Rim speed depends on diameter as well as RPM: a 6-inch wheel at 3,450 RPM moves about 5,400 feet per minute at the rim, while an 8-inch wheel at 1,750 RPM moves about 3,700 feet per minute. The 6-inch grinder still cuts hotter and faster.
6-inch vs 8-inch bench grinder
| 6-inch grinder | 8-inch slow-speed grinder | |
|---|---|---|
| Typical speed | 3,400–3,450 RPM | 1,750 RPM |
| Wheel width | 3/4 in. on the models here | Usually 1 in. |
| Arbor | 1/2 in. on the models here | Usually 5/8 in. |
| Hollow grind | Tighter curve | Flatter curve |
| Jig fit | Needs a spacer for Wolverine-style jigs | Designed for them |
| Best for | General shop sharpening, small spaces | Turning tools, regular sharpening |
| Amazon | See options | See options |
If you turn regularly, an 8-inch slow-speed grinder such as the WEN BG4286 or RIKON 80-805 is the better tool; our lathe tool sharpening jig guide covers both, and our best 8-inch bench grinders guide compares more models. If you already own a 6-inch grinder, it can still serve you well with the right wheels and habits.
6 inch bench grinder wheels
Most 6-inch grinders ship with gray aluminum oxide wheels in 36 and 60 grit. They are good for shaping and rust removal, but they run hot and leave a coarse edge. For edge tools, swap at least one for a white aluminum oxide wheel, which is more friable and runs cooler. For finishing gouges and small tools, Oneway suggests 80 and 120 grit wheels. Check three things on any replacement wheel: diameter, arbor hole (1/2 inch on the models here) and a maximum RPM rating at or above your grinder's speed.
Using a 6-inch grinder for lathe tools
- Fit a finer white wheel and dress it flat.
- Use a jig. Oneway's Wolverine instructions say a 6-inch grinder may need a spacer about 1 inch thick under it so the wheel centers line up with the jig base.
- Use light pressure and short passes, and keep a water pot nearby for carbon steel tools.
- Let the wheel do the work. If the motor slows, you are pushing too hard.
Our guide on how to sharpen lathe tools covers the grinds themselves.
Motor and build
Amperage and weight are the best quick guides. Light 2-amp grinders are fine for touch-ups. Heavier induction-motor grinders with cast iron bases, like the DW756 and JET, hold speed better and vibrate less. Whatever you buy, bolt it to a bench or stand.
Safety features
Look for adjustable eye shields, spark deflectors and tool rests that can sit close to the wheel. Keep the rest gap small, wear safety glasses or a face shield, and never grind on the side of a standard wheel. Connect a shop vacuum to the dust ports if your grinder has them, and keep it separate from your wood dust system.
How we chose
We did not test these grinders ourselves. We compared the specifications WEN, DEWALT and JET publish and the details in major retailer listings, and weighed them against the AAW's guidance on grinder speed for turning tools. Where listings disagreed, as with the JET's horsepower, we say so and leave the figure out.
FAQ
Is a 6-inch bench grinder good enough for sharpening?
For general shop sharpening (chisels, mower blades, drill bits, deburring), yes. For woodturning tools it works, but every common 6-inch grinder runs around 3,400 to 3,450 RPM, well above the roughly 1,750 RPM the AAW recommends for turning tools, so use friable wheels, a light touch and frequent quenching, or step up to an 8-inch slow-speed grinder.
What is the difference between a 6-inch and an 8-inch bench grinder?
An 8-inch grinder has a larger wheel, usually 1 inch wide on a 5/8-inch arbor, which gives a flatter hollow grind and fits most woodturning jigs and CBN wheels. A 6-inch grinder is smaller and cheaper, with 3/4-inch-wide wheels on a 1/2-inch arbor on the models here, and suits light shop work.
What size arbor does a 6-inch bench grinder have?
The WEN BG4276, WEN BG625V and JET 577101 use a 1/2-inch arbor, which is common on 6-inch grinders. Always check your model's manual before buying replacement wheels, and buy wheels rated for at least your grinder's maximum RPM.
What grit wheels should I use on a 6-inch grinder for sharpening?
Most 6-inch grinders ship with coarse 36-grit and medium 60-grit gray wheels for shaping and rust removal. For sharpening edge tools, many woodworkers replace one or both with finer white aluminum oxide wheels; Oneway suggests 80 and 120 grit for finishing gouges and small tools.
Can I use a Wolverine jig on a 6-inch grinder?
Yes, with a spacer. Oneway designed the Wolverine for 8-inch wheels and its instructions say a 6-inch grinder may need a spacer about 1 inch thick so the wheel centers line up with the jig base.
Verdict
For most shops, the WEN BG4276 is the best 6-inch bench grinder for the money, and the WEN BG625V is worth the step up if you want to slow the wheel down. Heavy users should choose the DEWALT DW756 or the cast-iron JET. If your main reason for buying is sharpening lathe tools, skip the 6-inch class and put the money toward an 8-inch slow-speed grinder.