Dotco 12R0400-13 Inline Precision Grinder | 12-04 Series | 0.1 HP | 60,000 RPM | 3 mm Collet | Composite Housing | Rear Exhaust

Built for fine deburring, flash removal, and controlled metal removal in close quarters, the Dotco 12R0400-13 Inline Precision Grinder combines a pencil-style inline body with 0.1 HP output and a fast 60,000 RPM free speed for small carbide burrs and diamond pins. The 3 mm collet holds compatible miniature rotary accessories for detailed edge work, while the composite housing helps keep the tool compact and light for fingertip control during careful finishing operations.

Part of the Dotco 12-04 Series, this rear-exhaust precision grinder directs spent air away from the work area to help reduce chip disturbance during delicate grinding. Its 1/4" carbide burr and 1/4" diamond pin abrasive capacity make it useful for mold shops, casting cleanup, aerospace component work, die maintenance, and general shop deburring where a full-size die grinder would be too large or too aggressive.

Type: Inline Precision Grinder | Series: 12-04 Series | SKU: 12R0400-13 | Power: 0.1 HP / 0.074 kW | Free Speed: 60,000 RPM | Collet Size: 3 mm | Exhaust: Rear | Housing Material: Composite | Overhose: 1 ft / 0.3 m | Abrasive Capacity: 1/4" Carbide Burr, 1/4" Diamond Pin | Overall Length: 5.8" / 147 mm | Tool Weight: 0.3 lb / 0.14 kg | Air Inlet: 1/8" NPT

Features:

• Industrial bearing construction supports consistent spindle performance during precision deburring and small-part finishing.
• 60,000 RPM free speed is suited for miniature carbide burrs and diamond pins used in fine material removal.
• 3 mm collet configuration accepts compatible 3 mm shank accessories for controlled detail grinding.
• Compact, lightweight composite housing helps improve handling in tight work areas and on small components.
• Rear exhaust directs air away from the front of the tool to help keep chips and debris from being blown across the work surface.
• Roll throttle allows the user to regulate tool speed by hand while maintaining a pencil-style grip.
• Standard equipment includes applicable collet, collet wrenches, collet guard, 5 ft / 1.5 m air supply hose, and 1 ft / 0.3 m overhose.

Made in USA:

Applications:

• Mold and die work: Removing small burrs, refining edges, and cleaning narrow details in tooling, cavities, and inserts.
• Casting and foundry cleanup: Trimming flash, small gates, and fine surface imperfections where a larger grinder may remove too much material.
• Aerospace and precision manufacturing: Detail finishing on machined parts, turbine-related components, and small metal features requiring controlled hand work.
• Automotive and motorsport shops: Deburring ports, small brackets, machined edges, and custom-fabricated parts with compatible burrs or diamond pins.
• Maintenance and repair departments: Touch-up grinding, small-part cleanup, and general deburring on fixtures, jigs, and plant equipment components.

FAQs:

• Q: What accessories fit the Dotco 12R0400-13?
  A: This model uses a 3 mm collet and is specified for 1/4" carbide burrs and 1/4" diamond pins. Always confirm the accessory shank size and speed rating before use.
• Q: What does rear exhaust mean on a precision grinder?
  A: Rear exhaust routes air out the back of the tool instead of toward the accessory. This helps keep airflow away from the grinding point, which is useful when working on small parts or fine details.
• Q: Is this the same as a standard die grinder?
  A: No. This is a precision pencil-style grinder built for small burrs, fine deburring, and detailed finishing. Standard die grinders are typically larger, lower-speed tools used for broader material removal.
• Q: Does the 12R0400-13 include a collet guard?
  A: The Cleco product information lists the applicable collet, collet wrenches, collet guard, air supply hose, and overhose as standard equipment. Please verify packaging before publishing if kit contents are critical for this SKU.
• Q: Can this grinder be used for DIY or hobby work?
  A: Yes, when paired with a suitable air supply and correctly rated accessories. It is best used for precision metal deburring, small custom parts, and careful detail grinding rather than large-scale material removal.

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