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 perfect harmony!

BUILT TO LAST - Rugged cast iron base and motor housing ensure unmatched durability and stability.
SPEED THAT WORKS - 3,600 RPM motor accelerates material removal for maximum efficiency.
EFFORTLESS ACCURACY - Precision-machined aluminum tool rests for exact positioning and flawless results.
POWER MEETS PRECISION - 3/4 HP induction motor delivers relentless industrial-grade grinding power.
COOL SMOOTH OPERATION - Rear exhaust ports reduce heat and dust, keeping your workspace cleaner and cooler.

The DEWALT DW758 8-Inch Bench Grinder features a robust 3/4 HP induction motor running at 3,600 RPM, housed in a durable cast iron frame designed for industrial grinding tasks. Its precision-machined aluminum tool rests and rear exhaust ports enhance accuracy and operational smoothness, making it an essential tool for professionals demanding power, longevity, and efficiency.

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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
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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