Chicago Pneumatic Air Angle Sander | CP3550-120AB | 12000 RPM | 5" Pad Size

Built for angle sanding, surface preparation, and material removal in production and maintenance environments, the Chicago Pneumatic CP3550-120AB Pneumatic Angle Sander delivers a fast 12,000 RPM free speed with a governed 1.5 hp / 1,100 W motor for demanding sanding work on metal parts, fabricated components, repair areas, and prepared surfaces. Its 5" / 125 mm circular abrasive pad capacity gives technicians a compact sanding footprint for controlled work on panels, edges, weld zones, and coating-prep areas.

The CP3550-120AB uses a 5/8-11 UNC output spindle thread and a safety lever starting system for controlled operation. A durable bevel gear, ball governor, spindle lock button, rear exhaust, and rotative inlet help support productive sanding in industrial maintenance and production settings where operators need power, control, and easier accessory changes.

Type: Pneumatic Air Angle Sander | Model: CP3550-120AB | SKU: 6151620370 | Series: CP3550 | Free Speed: 12,000 RPM | Max Power: 1.48 hp / 1,100 W | Pad Capacity: 5" / 125 mm | Output Spindle Thread: 5/8-11 UNC | Governor Type: Ball | Exhaust: Rear | Rotative Inlet: Yes | Spindle Lock: Yes | Autobalancer: No | Overspeed Shut-Off: No | Starting System: Safety lever | Main Material: Aluminium, composite over-sleeve | Air Consumption @ Load: 36 CFM / 17 l/s | Air Consumption @ Free Speed: 55 CFM / 26 l/s | Air Inlet: 3/8" NPT | Min. Hose Size: 0.5" / 13 mm | Max Dynamic Air Working Pressure: 90 PSI / 6.3 bar | Weight: 3.31 lb / 1.5 kg | Length: 9.8" / 249 mm | Height: 3.7" / 94 mm | Side to Center: 1.14" / 29 mm | Sound Pressure: 84 dB(A) | Sound Power: 95 dB(A) | Vibration: 5.2 m/s² | Vibration Uncertainty: 3.4 m/s² | Pad Holes: 0

Features:

• 1.5 hp / 1,100 W governed motor supports productive sanding in industrial maintenance, fabrication, and production applications.
• 12,000 RPM free speed provides fast abrasive action for surface preparation, blending, and material removal.
• 5" / 125 mm pad capacity gives a practical balance of access and coverage for panels, edges, weld zones, and localized sanding work.
• 5/8-11 UNC output spindle thread fits compatible sanding accessories made for this spindle size and operating speed.
• Durable bevel gear helps transfer torque during higher-load sanding tasks.
• Spindle lock button helps simplify abrasive and accessory changes, reducing downtime between sanding steps.
• Rotative inlet swivel helps improve hose handling and can reduce air hose twisting during operation.
• Rear exhaust helps direct exhaust air away from the immediate sanding area.
• Aluminium body with composite over-sleeve supports operator comfort and handling during repeated sanding work.

Applications:

• Industrial maintenance: Sanding equipment surfaces, brackets, housings, guards, and repair areas before coating or reassembly.
• Metal fabrication: Blending marks, preparing weld-adjacent areas, smoothing fabricated components, and refining surfaces before finishing.
• Production sanding: Supporting repeated surface preparation tasks where a governed pneumatic angle sander is preferred.
• Paint and coating preparation: Preparing compatible metal surfaces before primer, paint, coating, or final finishing steps.
• Vehicle and equipment service: Sanding repair panels, brackets, frames, covers, and service parts where a 5" angle sander provides good access.
• General shop work: Material removal and surface cleanup when paired with compatible 5" sanding accessories and a compressor sized for the tool's airflow demand.

FAQs:

• Q: What size abrasive pad does the CP3550-120AB use?
  A: Manufacturer data lists this model with a 5" / 125 mm circular abrasive pad capacity. Confirm the backing pad, abrasive type, and attachment method match the 5/8-11 UNC spindle and the tool's 12,000 RPM speed rating.
• Q: What is the difference between an angle sander and a random orbital sander?
  A: An angle sander uses a rotating abrasive accessory for sanding and material removal. A random orbital sander uses an orbital sanding pattern intended for different finish-preparation tasks. Select the tool style based on the surface, abrasive, and finish requirement.
• Q: What does the spindle lock do?
  A: The spindle lock helps hold the spindle while changing compatible sanding accessories, making pad or abrasive changes faster and easier.
• Q: What air supply does the CP3550-120AB require?
  A: The tool is rated for 90 PSI / 6.3 bar and uses 36 CFM / 17 l/s at load. Manufacturer data lists a 3/8" NPT air inlet and a 0.5" / 13 mm minimum hose size.
• Q: Can this sander be used for industrial maintenance work?
  A: Yes. Chicago Pneumatic identifies the CP3550 Series for industrial maintenance and production applications. Use compatible accessories, proper guarding practices, and the correct abrasive for the work material.

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

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