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High Quality Air-Powered Die Grinders – For Use on Metal, Fiberglass, Carbon Fibre, Composites and More!

Dynabrade 0.5 hp Straight-Line Die Grinders deliver powerful 0.5 horsepower (373 W) performance in a compact, gearless pneumatic design built for industrial reliability. Operating at speeds up to 24,000 RPM depending on the model, they provide smooth, precise grinding and finishing on metal surfaces. With durable steel housings, multiple collet options, and configurations including front, rear, or extended exhausts, these tools are ideal for metal fabrication, welding, shipbuilding, and general industrial maintenance.

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High Quality Air-Powered Die Grinders – For Use on Metal, Fiberglass, Carbon Fibre, Composites and More!

Gearless, Front Exhaust

• Gearless for reduced maintenance and downtime.
• All models include 1/4″ and 6 mm collets.
• Includes 1/4″ Collet Insert (50013), fits optional 1/8″ (50065), 3/8″ (50014), 6 mm (50016), 8 mm (50039)

Model 51300 – 15,000 RPM, 1/4″ & 6 mm Collets
Model 51301 – 18,000 RPM, 1/4″ & 6 mm Collets
Model 51302 – 20,000 RPM, 1/4″ & 6 mm Collets
Model 51303 – 24,000 RPM, 1/4″ & 6 mm Collets

Gearless, Rear Exhaust

• Gearless for reduced maintenance and downtime.
• Extended rear exhaust muffler design ensures lowest sound level.
• Both models include 1/4″ and 6 mm collets.

Model 51304 – 15,000 RPM, 1/4″ & 6 mm Collets
Model 51305 – 18,000 RPM, 1/4″ & 6 mm Collets
Model 51306 – 20,000 RPM, 1/4″ & 6 mm Collets
Model 51307 – 24,000 RPM, 1/4″ & 6 mm Collets

Steel Housings

• 24,000 RPM. Both models include 1/4″ and 6 mm collets.
• Ideal for use in foundries, welding operations and shipyards.
• Rubber Grip Housing reduces vibration and cold air transmission.
• Safety Lock Lever standard on all models.

Model 53807 – Front Exhaust
Model 53808 – Rear Exhaust

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Extension Models, Rear Exhaust

• Extension Die Grinder with 3″ workable reach.
• Extended rear exhaust muffler design ensures lowest sound level.

Model 53510 – 18,000 RPM, 1/4″ & 6 mm Collets
Model 53511 – 20,000 RPM, 1/4″ & 6 mm Collets

• Extension Die Grinder with 7-1/4″ workable reach.
• Extended rear exhaust muffler design ensures lowest sound level.

Model 53501 – 18,000 RPM, 1/4″ & 6 mm Collets
Model 53502 – 20,000 RPM, 1/4″ & 6 mm Collets

.5hp Die Grinder Image

.5hp Die Grinder Specs Table