DEWALT DW758 8-Inch Bench Grinder

Q: I'm confused by the claim this grinder 3/4 horse power. A 4.4 amp,120vac induction motor is 1/6 hp per various engineering charts and 3/4 hp 13 amps??

Horsepower is often used to compare electric, internal combustion, and hydraulic power, but you can't really convert one to the other without considering the load and duty cycle. 4.4 amps in a 120VRMS circuit is 528W of electric power. 750W is 1 hp... again, in electric power. So from the power company's point of view, it's a 3/4 hp motor (528/750=0.7, close enough). Throw in power factor, efficiency, and delivery loss and you are probably down to half a hp or so of mechanical power.. but certainly not as little as 1/6. From an engineer's point of view, it makes a big difference if you're going to power a chemical mixer for 12 hours at full load or sharpen a lawnmower blade for four seconds and then let the motor cool for thirty seconds.

Q: What is the size of the retaining nut that secures the grinding wheels on this unit? 1" is too small. 1-1/16" too big. Is it metric?

1 1/16 socket will work if you don’t have 26mm

Q: Is the tool rest adjustable to any angle?

Yes, it is adjustable but it needs a better way to loosen and tighten it, other than using open-end wrenches. I have seen other models that use a clamping style closure and after 3 years I think I'll weld up my own to match theirs.

Q: Is possible to remove one wheel to attach another wheel?

DW758 - use only wheels that measure 8" (200 mm) in diameter. This tool has 5/8" (16 mm) arbors on each side. These are specifications for the DW758 GRINDING WHEELS MAX. SAFE SPEED 7/8" (22 mm) & 1" (25 mm) Face, 8" (200 mm) dia. 60 grit medium grinding wheel 3600 RPM 7/8" (22 mm) & 1" (25 mm) Face, 8" (200 mm) dia. 36 grit coarse grinding wheel 3600 RPM BUFFING WHEEL 5/8" (16 mm) arbor, 8" dia. cotton buffing wheel 3600 RPM WIRE WHEEL BRUSHES 5/8" (16 mm) arbor, 5/8" (16 mm)–1–1/4" (32 mm) Face, 8" (200 mm)dia. 3600 RPM

4.7/5

Product ID: 4454985

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Details

Brand
DEWALT
Material
Cast Iron
Product Dimensions
17.75"L x x
Style
Bench Grinder
Power Source
Corded

⚡3/4 HP induction motor

⏱️3,600 RPM high-speed rotation

🛠️12.5-inch wheel spacing for large projects

Frequently Bought Together

DEWALT DW758 8-Inch Bench Grinder

DEWALT Wire Wheel For Bench Grinder, Crimped Wire, 8-Inch (DW4906)

WEN Bench Grinder Stand, 32-Inch with Water Pot (4288T), Black

Description

⚙️ Grind smarter, not harder — power and precision in one sleek package!

BUILT TO LAST - Industrial cast iron base and housing guarantee durability and long-term reliability.
COMFORT CONTROL - Precision-machined aluminum tool rests and rear exhaust ports provide smooth, accurate operation.
POWER MEETS PRECISION - Robust 3/4 HP motor delivers relentless grinding power for your toughest tasks.
SPEED THAT SAVES TIME - 3,600 RPM ensures rapid material removal, accelerating your workflow.
WORKSPACE FLEXIBILITY - 12.5-inch distance between wheels accommodates larger, more complex grinding jobs.

The DEWALT DW758 8-Inch Bench Grinder features a powerful 3/4 HP induction motor running at 3,600 RPM, housed in a rugged cast iron frame for industrial-grade durability. With a spacious 12.5-inch wheel gap and precision tool rests, it’s engineered for large-scale grinding, sharpening, and shaping tasks. Backed by a 3-year limited warranty and 1-year free service, this bench grinder is the ultimate tool for professionals demanding speed, strength, and longevity.

Specifications

Brand	DEWALT
Material	Cast Iron
Product Dimensions	17.75"L x 12.63"W x 11.73"H
Style	Bench Grinder
Power Source	Corded Electric
Color	Yellow, Black, Gray
Item Weight	0.22 Kilograms
Maximum Rotational Speed	3600 RPM
Horsepower	3600 RPM
Global Trade Identification Number	00028875075800
Manufacturer	DeWalt
UPC	028875075800
Part Number	DW758
Item Weight	7.7 ounces
Item model number	DW758
Is Discontinued By Manufacturer	No
Size	8"
Finish	Brushed
Pattern	Solid
Shape	Rectangular
Torque	1400 Inch Pounds
Item Package Quantity	1
Head Style	Flat
Measurement System	Metric
Grit Description	Coarse
Special Features	quiet
Included Components	60 Grit Wheel \| Eye Shields \| Spark Deflectors \| Tool Rests \| 36 Grit Wheel
Batteries Included?	No
Batteries Required?	No
National Stock Number	5130-01-397-8895

Have a Question? See What Others Asked

I'm confused by the claim this grinder 3/4 horse power. A 4.4 amp,120vac induction motor is 1/6 hp per various engineering charts and 3/4 hp 13 amps??

What is the size of the retaining nut that secures the grinding wheels on this unit? 1" is too small. 1-1/16" too big. Is it metric?

Is the tool rest adjustable to any angle?

Is possible to remove one wheel to attach another wheel?

Common Questions

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