Cleco 12S2674-4C Inline Extended Grinder | 12-26 Series | 0.9 HP | 18,000 RPM | Composite Housing | Rear Exhaust

For grinding and deburring work that requires long reach, the Cleco 12S2674-4C Inline Extended Grinder gives maintenance teams, fabricators, and toolroom operators a multiple-extension die grinder built around a 0.9 HP pneumatic motor and 18,000 RPM free speed. Its 29.00" extension helps reach deep cavities, recessed surfaces, internal casting features, and obstructed areas where a standard-length die grinder may not provide enough access.

This 12-26 Series inline grinder uses a 3/8"-24 external thread termination for compatible threaded cone or plug wheel abrasives. The 1.25" cone or plug wheel capacity supports controlled spot grinding, edge cleanup, and localized material removal, while the rear exhaust routes spent air away from the workpiece to help reduce debris blowback during close-quarters operation. Its composite housing and multiple industrial bearing construction support balance and power transfer across the extended spindle assembly.

Type: Inline Extended Die Grinder | Series: 12-26 Series | Model: 12S2674-4C | Power: 0.9 HP / 0.67 kW | Free Speed: 18,000 RPM | Termination: 3/8"-24 External Thread | Abrasive Capacity: 1.25" Cone or Plug Wheel | Extension: 29.00" | Overall Length: 38.0" | Weight: 6.6 lbs / 2.99 kg | Housing: Composite | Exhaust: Rear | Air Inlet: 1/4" | Minimum Hose I.D.: 5/16" / 7.9 mm | Rated Air Pressure: 90 PSI / 620 kPa

Features:

• Multiple-extension inline configuration provides extra reach for far-reaching grinding and deburring areas.
• 0.9 HP pneumatic motor supports material removal with compatible threaded abrasive accessories.
• 18,000 RPM free speed provides the rotational speed needed for cone and plug wheel grinding work.
• 3/8"-24 external thread termination accepts compatible threaded abrasive accessories in the proper size and speed rating.
• 1.25" cone or plug wheel abrasive capacity suits spot grinding, casting cleanup, and internal surface work.
• Multiple industrial bearings help maintain balance and power transfer through the extended spindle assembly.
• Composite housing helps manage tool weight while preserving a practical inline grip for controlled use.
• Rear exhaust directs air away from the grinding point to help reduce work-surface disturbance.

Made in USA:

Applications:

• Foundry and casting cleanup — reaching internal casting features, removing flash, and cleaning localized surface defects with compatible cone or plug wheels.
• Metal fabrication and weld repair — blending recessed weld areas, smoothing edges, and accessing deep joint locations.
• Industrial maintenance and MRO — grinding inside housings, brackets, frames, and machinery components where access is limited.
• Toolroom and machining departments — deburring ports, slots, pockets, and long internal features after machining operations.
• Fleet, equipment, and repair shops — cleaning hard-to-reach metal surfaces on frames, mounts, and component cavities.

FAQs:

• Q: What makes the 12S2674-4C different from shorter 12-26 Series models?
  A: The 12S2674-4C has a 29.00" extension and a 38.0" overall length, giving it substantially more reach than shorter multiple-extension models. It is useful when the abrasive must contact a recessed or obstructed area while the operator’s hand remains outside the work cavity.
• Q: What abrasive accessories fit this grinder?
  A: This SKU uses a 3/8"-24 external thread and is listed for 1.25" cone or plug wheel abrasives. Always verify thread size, wheel type, wheel diameter, and maximum operating speed before mounting any accessory.
• Q: Is this a collet-style die grinder?
  A: No. The “C” termination version uses a 3/8"-24 external thread rather than a standard 1/4" collet. Choose an “A” termination version in the 12-26 Series if the application requires collet-mounted carbide burrs.
• Q: Why is rear exhaust useful on an extended inline grinder?
  A: Rear exhaust sends spent air away from the abrasive contact point instead of forward across the workpiece. This can help reduce chip movement and air blast when grinding inside cavities or near loose debris.
• Q: What air supply should be used with the Cleco 12S2674-4C?
  A: Tool performance is rated at 90 PSI / 620 kPa. Use clean, regulated, lubricated air with at least a 5/16" hose I.D. to avoid unnecessary restriction at the tool.

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