Dotco 10R0400-13 Inline Precision Grinder | 10-04 Series | 0.1 HP | 60,000 RPM | 3 mm Collet | Composite Housing | Rear Exhaust

When the work calls for controlled deburring in small holes, machined edges, and detailed metal features, the Dotco 10R0400-13 provides a compact inline air grinder for precision finishing rather than heavy stock removal. This 10-04 Series model runs at 60,000 RPM free speed, giving small carbide burrs and diamond pins the surface speed needed for clean cutting on fine features. Its 0.1 HP motor is suited to light material removal, edge cleanup, and close-detail blending where a full-size die grinder may be too large or too aggressive.

The 3 mm collet accepts compatible 3 mm shank accessories, while the catalog-listed abrasive capacity supports a 1/4" carbide burr or 1/4" diamond pin. A carbide burr is a rotary cutting tool used for shaping and deburring metal; a diamond pin is a small abrasive point used for harder materials and precision finishing. The rear exhaust and 1 ft. overhose route spents air away from the nose of the grinder to help keep the work area more visible during detail work. The manufacturer's catalog lists this 10-04 model with a compact aluminum housing.

Type: Inline Precision Grinder | Series: 10-04 Series | Model: 10R0400-13 | Motor: 0.1 HP | Power: 0.074 kW | Free Speed: 60,000 RPM | Collet Size: 3 mm | Abrasive Capacity: 1/4" Carbide Burr, 1/4" Diamond Pin | Housing Material: Aluminum | Exhaust: Rear | Overhose: 1 ft. / 0.3 m | Tool Weight: 0.2 lb / 0.09 kg | Length: 5.8" / 147 mm | Air Inlet: 1/8" NPT

Features:

• Industrial bearing construction supports high-speed precision grinding and consistent spindle performance.
• Built for precision deburring and light metal removal on small edges, holes, slots, and detailed features.
• Compact, lightweight aluminum housing helps keep the tool manageable during close-control finishing work.
• Roll throttle equipped for controlled start-up and hand-operated speed modulation.
• 3 mm collet accepts compatible 3 mm shank carbide burrs, diamond pins, and other properly rated mounted accessories.
• Rear exhaust directs air away from the workpiece to reduce airflow disruption near the grinding point.
• Includes over-hose configuration for routing exhaust air back from the tool body.

Made in USA:

Applications:

• Machine shops and toolrooms — deburring drilled holes, milled edges, slots, and small machined details after cutting operations.
• Aerospace and precision fabrication — performing controlled edge cleanup on light metal parts, brackets, panels, and close-tolerance components.
• Die, mold, and fixture work — refining small contours, parting lines, and tight areas where a larger grinder limits visibility or access.
• Metal finishing and casting cleanup — removing flash, small burrs, and surface imperfections with the correct rated burr or diamond pin.
• Maintenance and repair benches — touching up small replacement parts, brackets, housings, and fabricated components before reassembly.

FAQs:

• Q: What accessories fit the Dotco 10R0400-13?
  A: This grinder uses a 3 mm collet, so the accessory shank must be 3 mm. The 1/4" carbide burr and 1/4" diamond pin specification refers to abrasive capacity, not a 1/4" shank size.
• Q: Is this grinder meant for heavy grinding?
  A: No. The 0.1 HP motor and 60,000 RPM speed are intended for precision deburring, detail finishing, and light material removal. For heavier stock removal, choose a larger die grinder matched to the required burr or wheel size.
• Q: Why is RPM matching important on this tool?
  A: Small grinding accessories spin at very high speed. The accessory’s maximum operating speed must equal or exceed 60,000 RPM before it is installed on the tool.
• Q: What does rear exhaust with overhose do?
  A: Rear exhaust sends used air out the back of the grinder instead of toward the cutting point. The overhose helps route that exhaust farther away from the operator’s hand and immediate work area.
• Q: What air pressure should be used?
  A: Use clean, regulated, lubricated air at the manufacturer-rated operating pressure for this tool class. Do not attach a quick-disconnect fitting directly to the tool body.

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