Dotco 12L1003-36 Inline Grinder | 12-10 Series | 0.3 HP | 25,000 RPM | 1/4" Collet | Composite Housing | Front Exhaust

Built for die and mold work, deburring, edge breaking, and small-area material removal, the Dotco 12L1003-36 Inline Grinder combines a 0.3 HP motor with 25,000 RPM free speed for fast burr work without moving into a larger grinder body. The 1/4" 300 Series collet accepts common carbide burrs and mounted points, while the front exhaust configuration routes exhaust at the tool head for users who prefer forward air discharge during close-control grinding.

The 12-10 Series composite housing keeps the tool compact and manageable for bench work, mold repair, casting cleanup, and production deburring. At 0.88 lb and 6" overall length, this inline die grinder gives the operator a pencil-like working position for reaching into pockets, contours, and inside edges where larger right-angle grinders are too bulky.

Type: Inline Die Grinder | Series: Dotco 12-10 Series | Model: 12L1003-36 | Power: 0.3 HP / 0.22 kW | Free Speed: 25,000 RPM | Collet Size: 1/4" | Collet Series: 300 Series | Exhaust: Front | Abrasive Capacity: 1/2" carbide burr or 1" mounted wheel | Weight: 0.88 lb | Length: 6" | Air Inlet Size: 1/4" | Minimum Hose I.D.: 1/4" / 6.4 mm | Air Pressure Rating: 90 PSI / 620 kPa

Features:

• 0.3 HP motor provides controlled power for deburring, porting, blending, and small-surface material removal.
• 25,000 RPM free speed supports fast cutting with properly rated carbide burrs and mounted wheels.
• 1/4" 300 Series collet accepts common die grinder accessories used in metalworking, mold work, and general shop finishing.
• Composite housing keeps the tool light in the hand and suited to repeated detail grinding tasks.
• Compact inline body gives the operator close control when working inside pockets, around edges, and along contoured surfaces.
• Front exhaust configuration suits workstations where forward exhaust discharge is preferred.
• Supplied with applicable collet and collet wrenches for setup with compatible accessories.
• Optional extended collet guard 01-1047 is supplied separately when additional guarding is required.

Made in USA:

Applications:

• Die and mold shops — refining cavities, removing small burrs, and blending tool steel surfaces after machining.
• Metal fabrication — cleaning cut edges, touching up weld areas, and smoothing small cast or machined parts.
• Aerospace and composite work — controlled burr and mounted-wheel work where a compact inline grinder helps reach tight detail areas.
• Automotive and performance shops — port matching, gasket-surface cleanup, bracket deburring, and general bench repair work.
• Maintenance and MRO departments — removing burrs from shafts, housings, brackets, and replacement parts before reassembly.
• Garage and hobby use — precision grinding and cleanup tasks when paired with an air system capable of supporting pneumatic die grinders.

FAQs:

• Q: What accessories fit the Dotco 12L1003-36?
  A: This model uses a 1/4" collet and is rated for a 1/2" carbide burr or a 1" mounted wheel. Always confirm that the accessory shank fits the collet and that the accessory speed rating equals or exceeds 25,000 RPM.
• Q: What does front exhaust mean on this grinder?
  A: Front exhaust means the tool discharges exhaust air at the front of the grinder rather than through the rear of the housing. This is a configuration preference that may affect air direction, noise at the workstation, and how the tool feels in tight spaces.
• Q: Is this a pencil grinder or a die grinder?
  A: The 12L1003-36 is an inline die grinder. Pencil grinders are usually smaller, higher-speed tools with smaller collets, while this model uses a 1/4" collet for common carbide burrs and mounted wheels.
• Q: What air hose size should be used?
  A: The catalog specifies a minimum hose inside diameter of 1/4" / 6.4 mm. Use a properly sized air supply and maintain 90 PSI at the tool for rated performance.
• Q: Does this grinder include the collet?
  A: Yes. Standard equipment includes the applicable collet and collet wrenches. Burrs, mounted wheels, guards, and other accessories are selected separately for the application.

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