Chicago Pneumatic Straight Die Grinder | CP3119-035 | 3500 RPM | 1/4" Collet

Built for low-speed grinding, deburring, and controlled contouring work, the Chicago Pneumatic CP3119-035 Straight Die Grinder gives fabrication, maintenance, and machining teams a powerful pneumatic tool for shaping metal with 1/4" shank accessories. Its 3,500 RPM free speed is well suited for controlled material removal where a slower accessory speed helps the user manage contact, finish, and heat buildup. The 1/4" collet accepts common industrial carbide burrs, mounted points, and abrasive stones when the accessory shank size and speed rating match the tool.

Part of the CP3119 series, this straight pneumatic die grinder uses a 1.2 hp / 900 W governed motor to help maintain working speed under load, making it useful for burr removal, casting cleanup, weld edge blending, and fitting work on metal components. The 8.74" overall length provides a compact straight-body layout for bench and in-place work, while the rear exhaust helps move discharged air away from the immediate grinding area.

Type: Straight Die Grinder | Series: CP3119 | Model: CP3119-035 | SKU: 6151701670 | Free Speed: 3,500 RPM | Power: 1.2 hp / 900 W | Collet Capacity: 1/4" (6.4 mm) | Air Consumption at Load: 38 CFM / 18 l/s | Net Weight: 3.09 lb / 1.4 kg | Length: 8.74" / 222 mm | Vibration: <2.5 m/s² | Sound Pressure: 81 dB(A) | Sound Power: 92 dB(A) | Air Inlet: 3/8" | Minimum Hose I.D.: 3/8" / 10 mm | Air Pressure: 90 PSI / 6.3 bar

Features:

• Powerful 1.2 hp / 900 W governed motor helps maintain consistent grinding performance under load.
• 3,500 RPM free speed supports controlled low-speed deburring, contouring, and finishing work.
• 1/4" collet capacity works with compatible carbide burrs, mounted points, and abrasive accessories.
• Steel housing with insulating composite over-housing improves grip feel while protecting the tool body in shop use.
• Streamlined safety lever helps reduce accidental start-up during handling and repositioning.
• Rear exhaust directs air away from the work surface to help maintain visibility around the accessory.
• Manufacturer-listed maintenance interval of up to 2,000 hours supports planned service in high-use environments.

IMPORTANT: The maximum operating speed of any abrasive accessory must equal or exceed the maximum speed of the tool. Never mount saw blades or non-reinforced grinding wheels. Always wear appropriate eye, face, and body protection.

Applications:

• Metal fabrication: deburring cut edges, smoothing weld-adjacent areas, and shaping small steel or aluminum components.
• Industrial maintenance and MRO: cleaning up worn parts, easing sharp edges, and preparing surfaces before repair or assembly.
• Machining and tool room work: removing burrs from machined parts, refining contours, and blending cast or milled surfaces.
• Vehicle and fleet repair: cleaning gasket surfaces, removing corrosion in tight areas, and dressing small metal imperfections.
• General shop use: controlled low-speed grinding tasks where a straight-body pneumatic grinder fits the part geometry and accessory type.

FAQs:

• Q: What accessories can be used with the CP3119-035?
  A: This grinder uses a 1/4" collet, so accessories must have a compatible 1/4" shank and a maximum operating speed rating that equals or exceeds 3,500 RPM. Common accessory types include carbide burrs, mounted points, and abrasive stones made for straight die grinders.
• Q: Why choose the 3,500 RPM version instead of a higher-speed die grinder?
  A: The lower speed gives the user more control for contouring, deburring larger contact areas, and working with accessories or materials that do not require very high spindle speed. Higher-speed CP3119 models are better matched to smaller burrs and faster stock removal on suitable materials.
• Q: Is the CP3119-035 a pencil grinder?
  A: No. This is a straight die grinder with a 1/4" collet and a 1.2 hp motor. Pencil grinders are usually smaller, lighter, and made for fine detail work with smaller collets.
• Q: What air supply does this grinder require?
  A: The manufacturer lists air consumption at load as 38 CFM / 18 l/s, with a 3/8" air inlet and 3/8" minimum hose I.D. Use a regulated 90 PSI / 6.3 bar air supply that can support the tool during sustained operation.
• Q: What does a governed motor do on a die grinder?
  A: A governed motor helps control speed as load changes, so the accessory does not slow excessively when it contacts the workpiece. This helps maintain steadier grinding and deburring performance.

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

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