Built for 5" wheel grinding, cutting, and metal surface preparation, the Chicago Pneumatic CP3650-120AB5 Angle Grinder delivers 12,000 RPM free speed for productive use with properly rated abrasive wheels. Its 2.4 HP / 1800 W governed pneumatic motor helps maintain wheel speed when removing weld seams, cutting repair sections, cleaning edges, or preparing parts for finishing. The 5" / 125 mm wheel capacity gives users more coverage than a 4-1/2" grinder while staying more compact than 6" or 7" wheel models. A 5/8"-11 UNC spindle thread supports common North American grinder wheel hardware when the selected wheel, guard, and speed rating match the job.
The CP3650-120AB5 is part of the CP3650 Series, a high-output pneumatic angle grinder family built for industrial grinding and cutting applications. The keyless pull-and-turn swiveling guard gives 360° guard rotation with indexed positions, helping the operator reposition the guard as the working angle changes. A spindle lock button supports faster abrasive disc changes, while the steel swiveling air inlet helps reduce hose pull around fixtures, frames, weldments, and workpieces. The aluminum body with composite over-sleeve gives the tool a manageable grip surface for repeated grinding, cutting, and cleanup work.
Type: Angle Grinder | Series: CP3650 | Model: CP3650-120AB5 | SKU: 6151607850 | Free Speed: 12,000 RPM | Power: 2.4 HP / 1800 W | Max Wheel Capacity: 5" / 125 mm | Spindle Thread: 5/8"-11 UNC | Auto Balancer: No | Air Consumption at Free Speed: 37.3 CFM / 17.6 l/s | Air Consumption at Load: 63.1 CFM / 29.8 l/s | Air Inlet: 3/8" BSP | Working Pressure: 90 PSI / 6.3 bar | Min. Hose Diameter: 1/2" / 13 mm | Length: 9.74" / 247.5 mm | Height: 4.02" / 102 mm | Width: 5.51" / 140 mm | Side to Center: 1.34" / 34 mm | Weight: 4.85 lb / 2.2 kg | Sound Pressure: 90 dB(A) | Sound Power: 101 dB(A) | Vibration Level: 7.4 m/s² | Guard Rotation: 360° | Guard Positions: 15 | Guard Type: Keyless Pull and Turn | Main Material: Aluminum with Composite Over-Sleeve | Spindle Lock: Yes | Starting System: Safety Lever
Features:
- 12,000 RPM free speed supports fast grinding and cutting with compatible 5" abrasive wheels.
- 2.4 HP / 1800 W governed motor helps maintain wheel speed during weld cleanup, edge grinding, cutting, and surface preparation.
- 5" / 125 mm wheel capacity provides a useful balance of grinding coverage and tool maneuverability.
- 5/8"-11 UNC spindle thread supports compatible wheel hardware when the correct guard and abrasive accessory are selected.
- Keyless pull-and-turn swiveling guard offers 360° rotation with 15 guard positions for faster guard adjustment.
- Spindle lock button helps reduce abrasive disc change time between grinding and cutting operations.
- Steel swiveling air inlet helps reduce hose drag while the tool is moved around workpieces, fixtures, and frames.
- Aluminum body with composite over-sleeve provides a durable housing with a more manageable grip surface.
Applications:
- Metal fabrication: grinding weld seams, cleaning cut edges, removing burrs, and preparing steel or aluminum parts for finishing.
- Body shop and vehicle repair: cutting panels, cleaning brackets, grinding repair sections, and preparing metal surfaces before refinishing.
- Industrial maintenance and MRO: rust removal, wheel-based cutting, surface cleanup, and repair work on guards, covers, fixtures, and plant hardware.
- Frame and equipment service: grinding mounts, supports, tabs, brackets, and fabricated repair components where a 5" wheel is appropriate.
- Workshop and field service: pneumatic grinding and cutting for users with a compressor system capable of supporting the tool's air demand.
FAQs:
- Q: What wheels can be used with the CP3650-120AB5?
A: Use compatible 5" / 125 mm grinding or cutting wheels that match the 5/8"-11 UNC spindle setup, guard configuration, and work application. The wheel's maximum operating speed must equal or exceed the grinder's 12,000 RPM free speed. - Q: How is the CP3650-120AB5 different from the CP3650-120AB45?
A: Both models run at 12,000 RPM and use a 5/8"-11 UNC spindle, but the CP3650-120AB5 uses a 5" wheel while the CP3650-120AB45 uses a 4-1/2" wheel. Choose the 5" model when you want slightly more wheel coverage while staying in a compact grinder format. - Q: What air supply does this angle grinder require?
A: Chicago Pneumatic lists 63.1 CFM / 29.8 l/s air consumption at load and 37.3 CFM / 17.6 l/s at free speed. Use a compressed-air system that can maintain 90 PSI / 6.3 bar at the tool through a minimum 1/2" / 13 mm hose. - Q: Does this model include an auto balancer?
A: No. The CP3650-120AB5 is listed without an auto balancer. For lower-vibration grinding requirements, compare it with CP3650 variants that include the auto-balancer feature. - Q: What does the keyless guard do?
A: The keyless pull-and-turn guard lets the operator reposition the guard without a separate tool. This helps keep the guard aligned correctly as the grinding or cutting angle changes.
| SKU | PART NUMBER | FREE SPEED | AUTO-BALANCER | POWER | MAX WHEEL CAPACITY | SPINDLE THREAD | AIR CONS. @LOAD | NET WEIGHT | LENGTH | VIBRATION LEVEL ISO 28927 (M/S2) |
SOUND PRESS. | SOUND POWER | AIR INLET | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| hp | W | in. | mm | cfm | l/s | lb | kg | in. | mm | |||||||||
| CP3650-120AA5 | 6151607860 | 12,000 | No | 2.4 | 1800 | 5 | 125 | M14 | 63 | 29.8 | 4.85 | 2.2 | 9.74 | 247.5 | 7.4 | 90 | - | 3/8 |
| CP3650-120AA5V | 6151607870 | 12,000 | Yes | 2.4 | 1800 | 5 | 125 | M14 | 63 | 29.8 | 4.85 | 2.2 | 9.74 | 247.5 | 5.2 | 92 | - | 3/8 |
| CP3650-120AH5V | 6151607880 | 12,000 | Yes | 2.4 | 1800 | 5 | 125 | Hexa | 63 | 29.8 | 4.85 | 2.2 | 9.74 | 247.5 | 3.8 | 92 | - | 3/8 |
| CP3650-100AB6 | 6151607890 | 10,000 | No | 2.3 | 1600 | 6 | 150 | 5/8-11 UNC | 55 | 26 | 5.07 | 2.3 | 9.74 | 247.5 | - | 89 | - | 3/8 |
| CP3650-120AB45 | 6151607840 | 12,000 | No | 2.4 | 1800 | 4-1/2 | 115 | 5/8-11 UNC | 63 | 29.8 | 4.85 | 2.2 | 9.74 | 247.5 | - | 90 | - | 3/8 |
| CP3650-120AB5V | 6151607900 | 12,000 | Yes | 2.4 | 1800 | 5 | 125 | 5/8-11 UNC | 63 | 29.4 | 4.85 | 2.2 | 9.74 | 247.5 | 8.6 | 103 | 93 | 3/8 |
| CP3650-100AB6V | 6151607910 | 10,000 | Yes | 2.3 | 1695 | 6 | 150 | 5/8-11 UNC | 61 | 28.9 | 5.07 | 2.3 | 9.74 | 247.5 | 5.3 | 101 | 90 | 3/8 |
| CP3650-120AB5 | 6151607850 | 12,000 | No | 2.4 | 1800 | 5 | 125 | 5/8-11 UNC | 63 | 29.8 | 4.85 | 2.2 | 9.74 | 247.5 | - | 90 | - | 3/8 |
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
- Type
- Angle Grinder
- Auto Balancer
- No
- Power (hp)
- 2.4
- RPM
- 12000
- Max Wheel Capacity (in.)
- 5
- Spindle Thread (in.)
- 5/8-11 UNC
- Air Consumption (CFM)
- 63
- Air Consumption (l/s)
- 29.8
- Sound Power (dBA)
- 90
- Sound Pressure (dBA)
- -
- Air Inlet
- 3/8"
