Dotco 12R0380-13 Precision Gearless Right Angle Grinder | 12-03 Series | 0.1 HP | 80,000 RPM | 3 mm Collet | Composite Housing | Rear Exhaust

When precision deburring calls for speed, reach, and a small accessory footprint, the Dotco 12R0380-13 gives operators a compact right-angle grinder built for controlled material removal on small parts, machined edges, tight pockets, and detailed finishing work. The 80,000 RPM free speed helps carbide burrs and diamond pins stay effective on fine contact points, while the 3 mm collet matches metric shank accessories used for precision grinding and finishing. Its 0.1 HP / 0.074 kW motor is suited for light deburring and detail work rather than aggressive stock removal, and the gearless right-angle configuration provides 90-degree access while helping reduce gear-train maintenance concerns.

The 12-03 Series composite housing keeps the tool light in hand for bench work, part cleanup, and repeated touch-up operations. A roll throttle provides controlled activation, while the rear exhaust and included overhose help route exhaust air away from the work area, making chips, dust, and oil mist less likely to blow directly across the grind point.

Type: Precision Gearless Right Angle Grinder | Series: 12-03 Series | Model: 12R0380-13 | Power: 0.1 HP / 0.074 kW | Free Speed: 80,000 RPM | Collet Size: 3 mm | Abrasive Capacity: 1/4" Carbide Burr, 1/4" Diamond Pin | Housing: Composite | Exhaust: Rear | Overhose: 1 ft / 0.3 m | Length: 5.5" / 140 mm | Weight: 0.3 lb / 0.14 kg | Air Inlet: 1/8" NPT

Features:

• Gearless right-angle 12-03 Series configuration provides 90-degree access while helping reduce maintenance and downtime compared with gear-driven angle heads.
• Industrial bearing supports precision spindle operation for repeatable deburring and fine metal removal.
• 80,000 RPM free speed is suited for small carbide burrs and diamond pins used on fine edges, tight radii, and detailed finishing points.
• Compact, lightweight composite housing helps reduce hand strain during detailed bench work and repeated part cleanup.
• Roll throttle equipped for controlled activation and adjustment during precision grinding operations.
• Includes a 1 ft / 0.3 m overhose to help route exhaust air away from the operator and work surface.
• Rear exhaust configuration helps keep airflow directed away from the grinding point in tight work areas.

Made in USA:

Applications:

• Precision deburring and edge cleanup — removing small burrs from machined parts after milling, drilling, boring, or tapping operations.
• Tool and die maintenance — refining small slots, radii, gates, mold details, and hard-to-reach surfaces with compatible 3 mm shank accessories.
• Metalworking and component manufacturing — light material removal on fittings, brackets, castings, and small fabricated parts.
• Maintenance and MRO benches — touch-up grinding, part correction, and fine cleanup where a larger die grinder would be difficult to control.
• Advanced home shop and hobby use — detailed grinding on small metal projects when used with properly rated accessories and regulated compressed air.

FAQs:

• Q: What does “gearless right-angle grinder” mean?
  A: The right-angle head gives the tool 90-degree access for tight spaces where an inline grinder may not fit. Gearless refers to the 12-03 Series head configuration, which helps reduce gear-related maintenance concerns.
• Q: What accessories fit the Dotco 12R0380-13?
  A: This model uses a 3 mm collet and is listed for 1/4" carbide burrs and 1/4" diamond pins. Always confirm the accessory shank size and maximum RPM rating before mounting.
• Q: Is a 3 mm collet the same as a 1/8" collet?
  A: No. A 3 mm collet is slightly smaller than a 1/8" collet, so the accessory shank size must match the collet. Use the 12R0380-13 for 3 mm shank accessories.
• Q: Is this grinder intended for heavy stock removal?
  A: No. With a 0.1 HP motor and 80,000 RPM speed, this is a precision grinder for fine deburring, detailed cleanup, and light material removal. For heavier grinding, choose a larger die grinder or right-angle grinder with the correct power and accessory capacity.
• Q: What air supply should be used with this tool?
  A: Use clean, regulated compressed air and match the air inlet connection to the tool’s 1/8" NPT inlet. The manufacturer data provided does not list air consumption, so confirm compressor capacity before using the tool in continuous production work.

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