Built for extended-reach material removal where standard die grinders cannot comfortably access the work area, the Dotco 12S2674-2AM6 Multiple Extension Inline Die Grinder combines a 0.9 HP motor with an 18,000 RPM free speed for controlled grinding, deburring, and surface preparation with compatible mounted abrasives. The multiple extension configuration places the working end farther from the operator's hand, helping reach into deep cavities, recessed areas, and around obstructions encountered in aerospace, metal fabrication, and production environments.
Part of the Dotco 12-26 Series, model 12S2674-2AM6 uses a 1/4" collet for compatible carbide burrs and mounted abrasive accessories. The inline body supports straight access to the workpiece, while rear exhaust directs spent air away from the grinding area. Its 18,000 RPM operating speed gives buyers a lower-speed extended-reach option for accessories and material-removal processes that require more controlled surface contact than higher-speed die grinder configurations.
Type: Multiple Extension Inline Die Grinder | Model: 12S2674-2AM6 | Series: 12-26 Series | Power: 0.9 HP | Free Speed: 18,000 RPM | Collet Size: 1/4" | Exhaust: Rear Exhaust
Features:
- Multiple extension configuration provides added reach for grinding and deburring inside recessed areas, deep cavities, and other locations that are difficult to access with standard-length die grinders.
- 0.9 HP pneumatic motor supplies power for material removal and finishing operations with compatible 1/4" shank accessories.
- 18,000 RPM free speed supports controlled grinding and surface preparation when matched with accessories rated for the tool's operating speed.
- 1/4" collet accepts compatible carbide burrs, mounted points, and other approved abrasive accessories with matching shank dimensions.
- Inline configuration provides straight tool alignment for accessing internal surfaces and reaching forward into confined work areas.
- Rear exhaust directs spent air away from the workpiece and grinding area.
- 12-26 Series configuration supports industrial material removal applications where extended reach and pneumatic operation are required.
Made in USA: 
Applications:
- Aerospace manufacturing and repair operations involving extended-reach deburring, blending, and finishing of recessed metal or composite surfaces.
- Metal fabrication work requiring removal of burrs, weld residue, and excess material inside deep openings or around obstructed components.
- Production machining environments for secondary finishing and material removal on parts that cannot be reached efficiently with standard-length die grinders.
- Industrial maintenance and MRO tasks involving grinding, cleaning, and surface preparation inside machinery, housings, and recessed assemblies.
- Tool rooms and fabrication shops using compatible 1/4" shank carbide burrs or mounted abrasives for extended-reach finishing operations.
FAQs:
- Q: What is a multiple extension die grinder used for?
A: A multiple extension configuration increases the tool's reach so the operator can access deep cavities, recessed surfaces, and areas obstructed by surrounding components. It is useful when a standard-length inline die grinder cannot position the abrasive accessory at the required working surface. - Q: What accessories fit the Dotco 12S2674-2AM6?
A: This model uses a 1/4" collet and accepts compatible 1/4" shank accessories approved for die grinder use. Always confirm that the accessory type and maximum operating speed are suitable for an 18,000 RPM pneumatic grinder before installation. - Q: Why does this grinder operate at 18,000 RPM instead of the higher speeds used by some die grinders?
A: Die grinder speed requirements vary with accessory type, diameter, and material-removal process. The 18,000 RPM free speed provides a controlled operating range for compatible accessories and applications where higher spindle speeds are not required. - Q: What is the benefit of rear exhaust?
A: Rear exhaust directs discharged air away from the grinding area, helping reduce airflow disturbance around the workpiece and keeping exhaust from blowing directly across the surface being finished. - Q: Can this grinder be used with any 1/4" shank abrasive accessory?
A: No. The accessory must have the correct 1/4" shank size, be approved for die grinder use, and carry a maximum operating speed rating equal to or greater than the tool's 18,000 RPM free speed. Follow the accessory manufacturer's mounting and safety requirements.
| SKU | Collet Size | Exhaust | Free Speed | Abrasive Capacity Grinder | Weight | Length | Air Inlet Size |
|---|---|---|---|---|---|---|---|
| r/min | Lb | in | in | ||||
| 12S2674-2C | 3/8 in-24e | Rear | 18000 | 1.25“ Cone or Plug Wheel | 4.19 | 23.5 | 1/4 in |
| 12S2674-4C | 3/8 in-24e | Rear | 18000 | 1.25“ Cone or Plug Wheel | 6.6 | 38 | 1/4 in |
| 12S2674-5C | 3/8 in-24e | Rear | 18000 | 1.25“ Cone or Plug Wheel | 7.7 | 45.3 | 1/4 in |
| 12L2674-1A | 1/4 in | Rear | 18000 | 3/4“ Carbide Bur, 1-1/2“ Mounted Wheel | 4.19 | 23.5 | 1/4 in |
| 12L2674-2A | 1/4 in | Rear | 18000 | 3/4“ Carbide Bur, 1-1/2“ Mounted Wheel | 4.19 | 23.5 | 1/4 in |
| 12L2674-3A | 1/4 in | Rear | 18000 | 3/4“ Carbide Burr, 1.5“ Mounted Wheel | 5.3 | 30.8 | 1/4 in |
| 12L2674-5A | 1/4 in | Rear | 18000 | 3/4“ Carbide Burr, 1.5“ Mounted Wheel | 7.7 | 45.3 | 1/4 in |
| 12S2674-2AM6 | 1/4 in | 6mm E300 | Rear | 18000 | 3/4“ Carbide Burr, 1.5“ Mounted Wheel | 4.19 | 23.5 | 1/4 in |
| 12S2674-4A | 1/4 in | Rear | 18000 | 3/4“ Carbide Burr, 1.5“ Mounted Wheel | 6.6 | 38 | 1/4 in |
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warning WARNING: This or other products sold on this website may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
