Dotco 12R0380-43 Precision Gearless Right Angle Grinder | 12-03 Series | 0.1 HP | 80,000 RPM | 3 mm Collet | Composite Housing | Rear Exhaust

For controlled deburring in tight spaces where extra hose reach matters, the Dotco 12R0380-43 combines a compact gearless right-angle head with a longer 4 ft / 1.2 m overhose for better air routing around benches, fixtures, and small workpieces. It's 80,000 RPM free speed supports fine cutting action with properly rated carbide burrs and diamond pins. At the same time, the 3 mm collet fits metric-shank precision accessories commonly used for detail grinding and edge cleanup. The 0.1 HP / 0.074 kW motor is suited for light material removal, small burr cleanup, and finishing work rather than aggressive grinding.

The 12-03 Series gearless right-angle configuration gives technicians 90-degree access for pockets, shoulders, machined corners, and small contours where a straight grinder may be awkward to position. A lightweight composite housing supports careful hand control during repetitive detail work, while the rear exhaust and extended overhose help carry exhaust air away from the immediate grinding point. Use this tool with clean, dry, regulated air at 90 PSI maximum, and do not lubricate turbine-style precision grinders.

Type: Precision Gearless Right Angle Grinder | Series: 12-03 Series | Model: 12R0380-43 | Power: 0.1 HP / 0.074 kW | Free Speed: 80,000 RPM | Collet Size: 3 mm | Overhose: 4 ft / 1.2 m | Abrasive Capacity: 1/4" Carbide Burr, 1/4" Diamond Pin | Housing: Composite | Exhaust: Rear | Weight: 0.3 lb / 0.14 kg | Length: 5.5" / 140 mm | Air Inlet Size: 1/8"

Features:

• Gearless right-angle 12-03 Series construction provides 90-degree access while reducing gear-head maintenance concerns.
• Industrial bearing supports dependable spindle performance for precision deburring and fine metal removal.
• 80,000 RPM free speed helps small carbide burrs and diamond pins cut efficiently on light contact areas.
• 3 mm collet fits metric-shank precision accessories used in mold work, tool rooms, and small-part finishing.
• 4 ft / 1.2 m overhose provides additional routing length compared with shorter overhose versions in the same series.
• Compact, lightweight composite housing helps improve maneuverability during close-hand detail work.
• Roll throttle equipped for controlled activation during delicate grinding and finishing operations.
• Standard equipment includes applicable collet, collet wrenches, collet guard, and 5 ft / 1.5 m air supply hose.

Made in USA:

Applications:

• Machine shop deburring — cleaning small burrs from drilled holes, milled edges, machined pockets, and tight shoulders.
• Tool, die, and mold work — reaching small radii, slots, parting lines, and contour details with compatible 3 mm shank accessories.
• Precision manufacturing — refining small metal components where grinder size, speed, and accessory control are more important than horsepower.
• Fixture and bench repair — touch-up grinding on brackets, fittings, tooling details, and confined repair points.
• Advanced hobby and prototype work — detailed metal cleanup when the accessory is properly rated for 80,000 RPM operation.

FAQs:

• Q: What makes the 12R0380-43 different from the 12R0380-13?
  A: Both models use a 3 mm collet and run at 80,000 RPM, but the 12R0380-43 is listed with a 4 ft / 1.2 m overhose. The longer overhose can help route exhaust air farther away from the immediate work area.
• Q: Can I use 1/8" shank accessories in this grinder?
  A: No. This model is listed with a 3 mm collet, which is not the same size as 1/8". Use accessories with the correct 3 mm shank, or choose a 1/8" collet model if your shop uses fractional-shank accessories.
• Q: Why does this grinder need dry air?
  A: Manufacturer guidance for this precision grinder calls for dry air at 90 PSI maximum and warns not to lubricate turbine-style grinders. Moisture or oil in the air supply can reduce performance and shorten tool life.
• Q: Is the Dotco 12R0380-43 for heavy grinding?
  A: No. This is a 0.1 HP precision grinder for detail deburring, edge cleanup, and light metal removal. For larger burrs or heavier stock removal, use a higher-horsepower die grinder or right-angle grinder rated for that work.
• Q: Can a quick-disconnect fitting be installed directly on the tool?
  A: No. Manufacturer guidance states not to attach a quick-disconnect fitting directly to the tool. Use the proper supplied hose arrangement and air-line setup to protect the grinder.

Looking for more information about Dotco Grinder? Click here to view the Catalog

Need help selecting the correct Dotco Grinders for your application? Please call (800) 608-5210 or email info@intlairtool.com