Chicago Pneumatic Angle Grinder | CP3850-65AH9VE | 6500 RPM | 9" Wheel Size

Built for large-wheel grinding, cutting, weld cleaning, contouring, and deburring in industrial maintenance and fabrication work, the Chicago Pneumatic CP3850-65AH9VE angle grinder delivers 6,500 RPM free speed for use with properly rated 9" / 230 mm abrasive wheels. Its 2.8 HP / 2,100 W governed pneumatic motor provides the power needed for heavy surface preparation, structural repair, and metal removal applications where smaller grinders may take more passes. This AH-version uses a Hexa output spindle, so wheel mounting hardware must be matched to the Hexa spindle configuration rather than a standard threaded spindle setup.

The CP3850-65AH9VE is part of Chicago Pneumatic’s CP3850 Series, a high-output 7" and 9" pneumatic angle grinder family made for rough industrial use. The built-in autobalancer helps reduce vibration while the wheel is running, which can improve control during longer grinding passes. Chicago Pneumatic also specifies a spiral bevel gear design with a 2,000-hour maintenance interval, plus a spindle lock button, double streamlined safety lever, multi-position guard, and 360° adjustable exhaust with integrated muffler for practical daily operation.

Type: Angle Grinder | Series: CP3850 | Model: CP3850-65AH9VE | SKU: 6151704950 | Free Speed: 6,500 RPM | Power: 2.8 HP / 2,100 W | Max Wheel Capacity: 9" / 230 mm | Output Spindle: Hexa | Auto Balancer: Yes | Air Consumption at Free Speed: 44 CFM / 21 l/s | Air Consumption at Load: 80 CFM / 38 l/s | Air Inlet: 1/2" BSP | Working Pressure: 90 PSI / 6.3 bar | Min. Hose Diameter: 0.63" / 16 mm | Length: 13.39" / 340 mm | Side to Center: 1.14" / 29 mm | Weight: 6.39 lb / 2.9 kg | Sound Pressure: 93 dB(A) | Sound Power: 104 dB(A) | Vibration Level: 5.4 m/s² / 17.7 ft/s² | Vibration Uncertainty K: 1.0 m/s² / 3.3 ft/s² | Guard Max Rotation: 150° | Guard Positions: 7 | Guard Type: Screws | Swiveling Guard: Key | Main Material: Aluminum | Spindle Lock: Yes | Starting System: Safety Lever

Features:

• 6,500 RPM free speed supports large 9" wheel grinding and cutting when paired with properly rated abrasive accessories.
• 2.8 HP / 2,100 W governed motor provides high output for weld cleaning, contouring, deburring, surface preparation, and repair work.
• 9" / 230 mm wheel capacity gives operators broad grinding coverage for larger surfaces, structural components, and heavy repair areas.
• Autobalancer helps reduce vibration during repeated grinding passes by improving wheel balance while the tool is running.
• Hexa output spindle supports compatible Hexa wheel mounting hardware for applications requiring this output configuration.
• Spiral bevel gear design helps reduce vibration and torque transmission stress while supporting a 2,000-hour maintenance interval.
• Spindle lock button helps reduce abrasive wheel change time between grinding, cutting, and cleanup operations.
• 360° adjustable exhaust with integrated muffler helps direct spent air away from the operator and work area.

Applications:

• Industrial maintenance and MRO: grinding, cutting, weld cleaning, and repair work on plant equipment, frames, fixtures, guards, and structural parts.
• Metal fabrication: weld seam removal, edge grinding, deburring, contouring, and surface preparation on large steel assemblies.
• Heavy equipment repair: cleaning repair plates, grinding brackets, cutting worn sections, and preparing larger service components for rework.
• Shipyard, rail, and structural service: pneumatic wheel grinding where 9" wheel coverage and high air motor output are required.
• Workshop and field service: large-wheel air grinding for users with a compressed-air system capable of supporting the tool's 80 CFM load demand.

FAQs:

• Q: What wheels can be used with the CP3850-65AH9VE?
  A: Use compatible 9" / 230 mm abrasive wheels that match the Hexa output spindle, wheel mounting hardware, guard configuration, and work application. The wheel's maximum operating speed must equal or exceed the grinder's 6,500 RPM free speed.
• Q: What does the Hexa output spindle mean?
  A: The Hexa output spindle is a specific non-standard-thread wheel mounting configuration. Do not assume this model accepts the same hardware as 5/8"-11 UNC CP3850 variants; use accessories and flanges intended for the Hexa setup.
• Q: What does the autobalancer do on this grinder?
  A: The autobalancer helps reduce vibration by improving wheel balance while the grinder is running. This is useful during repeated large-wheel grinding passes where vibration control affects handling and finish consistency.
• Q: What air supply does this 9" grinder require?
  A: Chicago Pneumatic lists 80 CFM / 38 l/s air consumption at load and 44 CFM / 21 l/s at free speed. Use a compressed-air system that can maintain 90 PSI / 6.3 bar at the tool through the recommended 0.63" / 16 mm minimum hose diameter.
• Q: How is the CP3850-65AH9VE different from the 7" CP3850-85AH7VE?
  A: The CP3850-65AH9VE uses a 9" / 230 mm wheel and runs at 6,500 RPM, while the CP3850-85AH7VE uses a 7" / 180 mm wheel and runs at 8,500 RPM. Choose based on required wheel diameter, available workspace, accessory rating, and the amount of grinding coverage needed.

Looking for more information about Chicago Pneumatic Angle Grinder? Click here to view the Catalog.

For help selecting the correct Chicago Pneumatic Angle Grinders for your assembly application, call (800) 608-5210 or email info@intlairtool.com