Description
This Ball for the Chicago Pneumatic CP9 is a Genuine Part from Atlas Copco, supplied to restore the correct function of the CP9 pneumatic drill. Made from precision, hardened steel with a smooth spherical finish, it acts as a critical sealing and locating element within the air/valve or hammer mechanism. A worn, pitted, or missing ball can lead to air leaks, misfires, and poor impact performance. Replacing it during routine servicing helps maintain reliable operation, consistent power, and reduced downtime on site. Identified by part number Z8768412, it is designed specifically for the CP9, ensuring the right size, hardness, and tolerance to match the original factory specification. Suitable for both professional workshops and DIY maintenance of Chicago Pneumatic CP9 tools.
Key Features:
– Genuine Atlas Copco OEM part for assured fit and compatibility with CP9
– Hardened steel construction for high wear resistance and long service life
– Precision-ground finish to support proper sealing and smooth motion
– Helps restore consistent hammering performance and air control
– Reduces the risk of air leaks, misfires, and premature tool wear
– Like-for-like replacement to simplify fitting and minimise downtime
– Built to original tolerances for dependable, repeatable performance
– Suitable for routine maintenance or full overhauls of CP9 drills
– Reliable choice for construction, demolition, and utility environments
– Backed by Atlas Copco’s manufacturing standards for durability
Typical Applications:
Used during servicing and repairs of the Chicago Pneumatic CP9 to replace a worn or damaged internal ball in the pneumatic/valve assembly. Common in workshop overhauls or on-site maintenance to correct loss of impact, irregular firing, or air leakage. Helps extend tool life, maintain performance, and prevent unplanned stoppages in construction, demolition, and industrial settings.
Also known as:
CP9 valve ball, check ball, steel ball, CP9 drill ball, internal ball for pneumatic drill, CP9 spare, replacement ball for Chicago Pneumatic, OEM ball Z8768412, Atlas Copco CP9 component, air tool ball.
Fits Models:
CP9
Alternate Part Numbers:
Z8768412, Z8768412
Product Specifications
| L&S Part No. | Z8768412 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Atlas Copco |
| OEM No. | Z8768412 |
| Unit of Sale | 1 |
| Applications | CP9 |
| Machine Type | Drills |
| Fits Models | CP9 |




Reviews
There are no reviews yet.