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.

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

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.

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

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

EFFORTLESS ACCURACY - Precision-machined aluminum tool rests let you position work with surgical precision.
SPEED MEETS PRECISION - Runs at 3,600 RPM for rapid material removal without sacrificing control.
STAY COOL GRIND SMOOTH - Rear exhaust ports reduce heat buildup for longer, quieter operation.
POWER THAT MEANS BUSINESS - 3/4 HP induction motor delivers relentless industrial-grade grinding power.
BUILT TO OUTLAST THE GRIND - Rugged cast iron base and motor housing ensure unmatched durability and stability.

The DEWALT DW758 8-Inch Bench Grinder combines a robust 3/4 HP induction motor with a durable cast iron frame, delivering 3,600 RPM for high-speed, precise grinding. Designed for professionals who demand reliability and efficiency, it features precision tool rests and rear exhaust ports for smooth, quiet operation—perfect for tackling larger, longer grinding tasks with confidence.

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Manufacturer	DeWalt
Part Number	DW758
Product Dimensions	45.09 x 32.08 x 27.31 cm; 220 g
Item model number	DW758
Size	8 Inches
Colour	Yellow, Black, Gray
Style	Bench Grinder
Material	Cast Iron
Power Source	Corded Electric
Horsepower	0.75 Horsepower
Torque	1400 Inch Pounds
Item Package Quantity	1
Head Style	Flat
Measurement System	Metric
Grit Description	Coarse
Special Features	quiet
Included Components	8IN BENCH GRINDER
Batteries included?	No
Batteries Required?	No
Item Weight	220 g

DEWALT DW758 8-Inch Bench Grinder

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