Built for higher-output deburring, weld blending, and controlled material removal in tight work areas, the Dotco 12L2777-36 Heavy Duty Head Right Angle Grinder pairs a 0.9 HP pneumatic motor with a 12,000 RPM free speed for strong cutting action with larger compatible burrs and mounted wheels. The 1/4" collet accepts common carbide burr tooling, while the heavy duty right-angle head improves access around fixtures, frames, castings, and fabricated assemblies where straight grinders are harder to position.
Part of the Dotco 12-27 Series, this model features a composite housing, rear exhaust, and a 3" extension for added reach into recessed areas. Its 3/4" carbide burr and 1.25" mounted wheel capacity make it a practical choice for production grinding, repair work, and finishing operations that require a compact tool with more power than smaller angle grinders.
Type: Heavy Duty Head Right Angle Grinder | Series: 12-27 Series | SKU: 12L2777-36 | Power: 0.9 HP | Free Speed: 12,000 RPM | Collet Size: 1/4" | Abrasive Capacity: 3/4" Carbide Burr, 1.25" Mounted Wheel | Housing: Composite | Exhaust: Rear | Extension: 3" | Overall Length: 10.5" | Weight: 2.3 lbs
Features:
- 0.9 HP motor provides added grinding power for higher material removal demands.
- Heavy duty right-angle head improves access in confined grinding and finishing locations.
- 12,000 RPM free speed supports controlled use with compatible burrs and mounted wheels.
- 1/4" collet accepts common carbide burr tooling for deburring and shaping work.
- Composite housing helps reduce tool weight while maintaining jobsite durability.
- Rear exhaust directs air away from the work area and operator.
- 3" extension provides extra reach into recessed features, castings, and assemblies.
Made in USA: 
Applications:
- Deburring machined parts, castings, and fabricated metal components.
- Blending welds and smoothing edges in fabrication and repair shops.
- Die, mold, and pattern work requiring controlled access with a right-angle tool.
- Production finishing where a compact grinder must reach around fixtures or inside assemblies.
- Maintenance and MRO work on equipment frames, brackets, housings, and tight-clearance parts.
FAQs:
- Q: What accessories can be used with the Dotco 12L2777-36?
A: This grinder uses a 1/4" collet and is rated for a 3/4" carbide burr or a 1.25" mounted wheel. Always confirm the accessory’s maximum RPM before use. - Q: What does the 3" extension help with?
A: The extension gives the operator more reach into recessed or obstructed areas, which is useful when grinding inside castings, brackets, frames, and assemblies. - Q: Is this model stronger than smaller 0.6 HP Dotco angle grinders?
A: Yes. The 0.9 HP motor provides more power for higher material removal work, while the 12,000 RPM speed remains controlled for compatible burrs and mounted wheels. - Q: Does this grinder include the burr?
A: No. Burrs and mounted wheels are selected separately based on the material, shape, and finishing requirement.
| SKU | Collet Size | Exhaust | Free Speed | Abrasive Capacity Grinder | Abrasive Capacity Sander | Weight | Length | Head Height | Air Inlet Size |
|---|---|---|---|---|---|---|---|---|---|
| r/min | Lb | in | in | in | |||||
| 10L2778-36 | 1/4 in | Rear | 14500 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 4“ (100mm) Sanding/Polishing Disc | 2.4 | 10.5 | 2.90 | 1/4 in |
| 10L2778-45 | 1/4 in | Rear | 14500 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 4“ (100mm) Sanding/Polishing Disc | 2.4 | 10.5 | 2.90 | 1/4 in |
| 12L2277-36 | 1/4 in | Rear | 12000 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 4“ (100mm) Sanding/Polishing Disc | 2.2 | 10 | 2.70 | 1/4 in |
| 12L2278-36 | 1/4 in | Rear | 14500 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 4“ (100mm) Sanding/Polishing Disc | 2.2 | 10 | 2.70 | 1/4 in |
| 12L2776-36 | 1/4 in | Rear | 13500 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 4“ (100mm) Sanding/Polishing Disc | 2.2 | 10.5 | 2.90 | 1/4 in |
| 12L2777-32 | 1/4 in-28i | Rear | 12000 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 4“ (100mm) Sanding/Polishing Disc | 2.2 | 10.5 | 2.90 | 1/4 in |
| 12L2777-36 | 1/4 in | Rear | 12000 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 4“ (100mm) Sanding/Polishing Disc | 2.2 | 10.5 | 2.90 | 1/4 in |
| 12L2777-45 | 1/4 in | Rear | 12000 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 4“ (100mm) Sanding/Polishing Disc | 2.2 | 10.5 | 2.90 | 1/4 in |
| 12L2778-36 | 1/4 in | Rear | 14500 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 4“ (100mm) Sanding/Polishing Disc | 2.2 | 10.5 | 2.90 | 1/4 in |
| 12L2778-45 | 1/4 in | Rear | 14500 | 3/4“ Carbide Burr, 1.25“ Mounted Wheel | 2.2 | 10.5 | 2.90 | 1/4 in | |
| 12L2776-30 | 1/4 in-20i | Rear | 13500 | 4“ Sanding Disc | 2.2 | 10.5 | 2.90 | 1/4 in | |
| 12L2776-32 | 1/4 in-28i | Rear | 13500 | 4“ Sanding Disc | 2.2 | 10.5 | 2.90 | 1/4 in | |
| 12L2777-28OH | 3/8 in-24e | Rear | 12000 | 4“ Type 1 Cut-Off Wheel | 3.3 | 10.9 | 2.90 | 1/4 in | |
| 12L2778-28 | 3/8 in-24e | Rear | 14500 | 4“ Type 1 Cut-Off Wheel | 3.3 | 10.9 | 2.90 | 1/4 in | |
| 12L2778-84 | 3/8 in-24e | Rear | 14500 | 4“ Type 27 Wheel | 2.87 | 10.5 | 2.30 | 1/4 in |
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
- Type
- Grinder
- Power (hp)
- 0.9
- Power (kW)
- 0.67
- Collet Size (in.)
- 1/4
- RPM
- 12000
- Extension (in.)
- 3
- Abrasive Capacity
- 3/4" Carbide Burr, 1-1/4" Mounted Wheel
- Housing Material
- Composite
- Length (in.)
- 10.5
- Length (mm)
- 267
