Time: 2025-08-14 14:15:02
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August 14, 2025 | Posted by: Tonkee Machinery Co.,Ltd.
At Tonkee Machinery Co.,Ltd., we understand that the longevity and efficiency of your heavy machinery are paramount to your operations. Excavators are complex machines, and their smooth operation relies on a network of critical components working in perfect harmony. From the core CPU controller that acts as the brain of the machine to the precise sensors and motors that dictate its movements, each part plays a vital role in ensuring performance, safety, and productivity.
The right replacement parts are not just about functionality; they're about maintaining the original specifications and integrity of your equipment. Using high-quality, reliable components is the best way to prevent costly downtime, extend the lifespan of your excavators, and ensure that they perform at their best, day in and day out. This article highlights a selection of essential parts we offer, focusing on their importance and the specific machines they serve.

The heart of an excavator's electronic system lies in its control units and controllers. These components manage everything from engine performance to hydraulic functions. A well-functioning controller ensures that the machine responds accurately and efficiently to operator commands. Similarly, stepper motors and sensors provide the feedback and control necessary for precise movements and system monitoring. A stepper motor, for instance, is crucial for controlling throttle or other critical valves, while a speed sensor provides essential data for the machine's operation.
Another crucial part is the monitor, which is the operator's window into the machine's health and status. It displays vital information, from engine temperature to diagnostic codes, allowing the operator to make informed decisions and react to potential issues before they become serious problems. The air conditioner (AC) controller, while perhaps not directly related to digging, is vital for operator comfort and focus, especially during long working hours in challenging environments.
We've compiled a list of high-demand parts, complete with their part numbers and the specific excavator models they are compatible with. This table is designed to help you quickly identify the components you need to keep your fleet running smoothly.
| No. | Part Name | Part Number | Suitable Excavator Models |
|---|---|---|---|
| 1 | Control Unit | 4I5387 | - |
| 2 | CPU Controller | 164-8285 | 320B / 320BL |
| 3 | Monitor | Y000000463 | ZX30U-5 |
| 4 | CPU Controller | LQ22E00102F2 | SK200-8 / SK-8 |
| 5 | Control Unit | 20Y-06-25120 | - |
| 6 | Stepper Motor | 247-5207 | E311C / E312C |
| 7 | Air Conditioner AC Controller | YN20M01468P3 | SK330-8 |
| 8 | Speed Sensor | 4P-5820 | CAT330C / CAT336D |
| 9 | Stepper Motor | 7Y-3914 | E320L / E322L |
| 10 | Epos Controller | 300611-00057 | DX140 |
| 11 | Controller | 7834-21-4001 | PC200LC-6 / PC200-6 |
| 12 | Controller | 9263792 | ZX280-3 / ZX270-3 |
| 13 | Controller | 7835-26-1005 | PC200-7 / PC290-7 |
| 14 | CPU controller | 119-0607X-00 | E320B / 320B |
| 15 | Solenoid valve | 2436U1453S8 | - |
Choosing the right supplier for your excavator parts is just as important as choosing the right parts themselves. At Tonkee Machinery, we pride ourselves on providing components that meet or exceed OEM standards, ensuring perfect compatibility and reliable performance. Our commitment to quality, combined with extensive industry experience, makes us a trusted partner in the heavy machinery sector. We understand the demands of your work and the importance of having equipment that you can count on.
Our knowledgeable team is dedicated to helping you find the exact parts you need, providing expert advice and support to minimize downtime and maximize your investment. Whether you're looking for a CPU controller for a Komatsu PC200-7 or a stepper motor for a CAT E311C, our comprehensive inventory and precise part matching ensure you get the right component every time.
Investing in high-quality parts is the most effective way to protect your heavy machinery. It's an investment in your business's future, guaranteeing that your excavators remain powerful, efficient, and ready for any job. Trust Tonkee Machinery for all your excavator parts needs.