Dotco 12L1003-36LH Inline Die Grinder | 12-10 Series | 0.3 HP | 25000 RPM | 1/4" Collet | Front Exhaust

When you need a compact straight grinder for die and mold work, deburring, and controlled material removal, the Dotco 12L1003-36LH Inline Die Grinder delivers 0.3 HP of pneumatic power with a 25,000 RPM free speed for fast cutting with compatible burrs and mounted points. The 1/4" collet accepts common industrial die grinder accessories, while the inline body gives the user a pencil-like approach for working along edges, slots, machined features, and tight contours.

Part of the Dotco 12-10 Series, this model uses a composite housing to keep tool weight low at 0.88 lb, making it practical for repeated bench work and close-control finishing. The front exhaust configuration routes air out the front of the tool, and the LH suffix indicates left hand rotation for applications where opposite rotation is preferred based on burr direction, workpiece approach, or fixture orientation.

Type: Inline Die Grinder | Series: 12-10 Series | Model: 12L1003-36LH | Collet Size: 1/4" | Power: 0.3 HP / 0.22 kW | Free Speed: 25,000 RPM | Abrasive Capacity: 1/2" Carbide Burr, 1" Mounted Wheel | Housing Material: Composite | Rotation: Left Hand | Exhaust: Front | Weight: 0.88 lb | Length: 6" | Air Inlet: 1/4" NPT | Air Pressure: 90 PSI / 620 kPa | Minimum Hose I.D.: 1/4" / 6.4 mm

Features:

• Durable and ergonomic composite housing supports controlled handling during repeated grinding, shaping, and deburring work.
• Compact inline body helps the user access confined areas and maintain a straight approach to the work surface.
• 25,000 RPM free speed provides a balanced speed range for carbide burrs and mounted wheels within the stated abrasive capacity.
• 1/4" collet accepts common industrial die grinder accessories used for edge breaking, blending, porting, and surface preparation.
• Left hand rotation version for applications where reverse rotational direction better suits the workpiece, fixture, or cutting approach.
• Front exhaust configuration for users who prefer a tool without rear overhose routing.
• Standard equipped with lock-off lever to help reduce unintended throttle activation.
• Optional Extended Collet Guard 01-1047 is supplied separately when additional accessory guarding is required.

Made in USA:

Applications:

• Die and mold shops: blending parting lines, refining mold details, and removing small amounts of material with compatible burrs.
• Machining and fabrication: deburring drilled holes, machined edges, weld starts, and cut metal surfaces before finishing or assembly.
• Maintenance and MRO: cleaning up worn parts, gasket surfaces, brackets, and equipment components during repair work.
• Automotive and restoration work: port cleanup, bracket shaping, surface smoothing, and general garage grinding when paired with the correct air supply and accessories.
• General metalworking: controlled grinding, shaping, and edge breaking where a small inline die grinder offers better access than a larger wheel grinder.

FAQs:

• Q: What does “LH” mean on the 12L1003-36LH?
  A: LH means left hand rotation. This model rotates opposite the standard version, which can be useful when the workpiece orientation, burr cutting direction, or fixture setup calls for reverse rotation.
• Q: What accessories can this die grinder use?
  A: The catalog lists abrasive capacity as 1/2" carbide burr and 1" mounted wheel. Any accessory used with this grinder must fit the 1/4" collet and have a maximum operating speed equal to or greater than 25,000 RPM.
• Q: What air setup is required?
  A: This tool is performance rated at 90 PSI / 620 kPa and requires a minimum 1/4" / 6.4 mm hose I.D. Use clean, regulated, lubricated air to help maintain grinder performance and reduce premature wear.
• Q: Does this model have front or rear exhaust?
  A: The 12L1003-36LH is a front exhaust model. Buyers needing rear exhaust or overhose noise suppression should compare rear exhaust OH versions within the Dotco 12-10 Series.
• Q: What comes with the tool?
  A: Standard equipment includes the applicable collet and collet wrenches. Burrs, mounted wheels, extended collet guards, hoses, and FRL equipment are selected separately based on 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