Dotco 12L1028-36 Inline Grinder | 12-10 Series | 0.3 HP | 20,000 RPM | 1/4" Collet | Composite Housing | Rear Exhaust

When deburring, die work, and small-area finishing call for a straight, controlled air grinder, the Dotco 12L1028-36 inline grinder delivers a practical balance of speed, power, and accessory compatibility. Its 0.3 HP pneumatic motor supports light material removal with carbide burs, mounted points, and similar 1/4" shank accessories, while the 20,000 RPM free speed helps maintain clean cutting action on edges, holes, slots, and contoured surfaces. The 1/4" 300 Series collet gives users compatibility with common die grinder tooling, and the inline body keeps the abrasive accessory aligned with the hand for accurate touch-up work.

Part of the Dotco 12-10 Series, the 12L1028-36 is built with a composite housing and rear exhaust configuration. Rear exhaust routes spent air away from the front of the tool, helping keep the work area near the burr or mounted wheel more visible when compared with front-exhaust configurations. This model is a strong fit for maintenance teams, toolrooms, mold shops, and repair technicians who need a compact straight grinder for detail work rather than a larger wheel grinder.

Type: Inline Grinder | Brand: Dotco | Model: 12L1028-36 | Series: 12-10 Series | Power: 0.3 HP / 0.22 kW | Free Speed: 20,000 RPM | Collet Size: 1/4" 300 Series | Exhaust: Rear | Housing: Composite | Abrasive Capacity: 1/2" Carbide Burr, 1" Mounted Wheel | Overall Length: 6.0" | Weight: 0.8 lb / 0.36 kg

Features:

• 0.3 HP pneumatic motor provides usable output for controlled deburring, blending, and light grinding work.
• 20,000 RPM free speed supports efficient cutting with properly rated carbide burs, mounted points, and abrasive accessories.
• 1/4" 300 Series collet accepts common 1/4" shank accessories used for die grinding and finishing tasks.
• Composite housing offers a practical grip surface while keeping the tool compact for repeated shop and production use.
• Rear exhaust routes air away from the tool nose, helping maintain visibility near the grinding point during detail work.
• Compact inline body helps users reach into confined areas where larger grinders or right-angle tools may be awkward.
• Standard lock-off lever helps reduce accidental starts when handling, positioning, or setting the tool down.

Made in USA:

Applications:

• Die and mold work — refining cavities, cleaning parting lines, and touching up tight details with carbide burs or mounted points.
• Metal fabrication — removing burrs from cut edges, drilled holes, slots, brackets, and small welded areas.
• Industrial maintenance and MRO — cleaning replacement parts, fitting components, and preparing small surfaces during equipment repair.
• Automotive and fleet repair — gasket cleanup, casting flash removal, rust spot cleaning, and small-area grinding in service bays.
• Machine shop and toolroom use — deburring machined features, ports, bores, and fixture components where straight-line control is preferred.

FAQs:

• Q: What accessories can I use with the Dotco 12L1028-36?
  A: This grinder uses a 1/4" collet, so it is intended for compatible 1/4" shank carbide burs, mounted points, rotary files, and similar accessories. Confirm both shank size and maximum RPM rating before installing any accessory.
• Q: Why choose the 20,000 RPM version instead of a higher-speed 30,000 RPM model?
  A: A 20,000 RPM grinder can be a better match for some mounted wheels and carbide burr work where control and accessory speed limits matter. Always choose the grinder speed based on the accessory manufacturer’s maximum operating speed and the material being worked.
• Q: What does rear exhaust mean on this inline grinder?
  A: Rear exhaust means spent air exits toward the rear of the tool rather than near the front. This can help reduce air blast near the workpiece and may improve visibility around the burr or mounted point.
• Q: Is this the same as a right-angle grinder?
  A: No. The 12L1028-36 is an inline grinder, meaning the accessory is positioned in line with the tool body. A right-angle grinder uses a 90-degree head and is selected for different access needs.
• Q: Can this grinder be used in a garage or small repair shop?
  A: Yes, provided the air system can support the tool and the user selects properly rated accessories. It is best used for controlled deburring, cleaning, and small-area material removal rather than large-scale surface grinding.

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