The 0620026735 Eaton drum rotation pump is the heart of the hydraulic system that drives the mixing drum on concrete mixer trucks. Its primary function is to convert mechanical power from the engine, via the power take‑off (PTO), into hydraulic flow and pressure that rotates the drum at a controlled speed. This pump is engineered to deliver smooth, stepless speed control, allowing operators to adjust the drum rotation speed precisely to match the consistency of the concrete mix. A reliable drum rotation pump is critical for maintaining concrete quality, preventing segregation, and ensuring efficient discharge at the job site. By installing the genuine 0620026735 Eaton pump, you restore factory‑fresh performance, reduce downtime, and extend the service life of your hydraulic system.
Precise Speed Control
Advanced hydraulic design enables smooth, proportional control of drum rotation speed, ensuring consistent concrete quality.
Heavy‑Duty Durability
Constructed with high‑strength materials and precision‑machined components to withstand the continuous, high‑load demands of concrete mixing.
Eaton OEM Quality
Manufactured to Eaton’s original specifications – ensuring perfect compatibility with existing hydraulic circuits and controllers.
OEM‑Exact Fit
Designed for direct replacement on HOWO concrete mixer trucks – no modifications required.
| Parameter | Specification |
|---|---|
| OEM Number | 0620026735 |
| Product Name | Eaton Drum Rotation Pump (4633-045) |
| Brand | HOWO / Sinotruk / Eaton |
| Model | 4633-045 |
| Pump Type | Axial piston, variable displacement |
| Material | High‑grade cast iron housing, hardened steel internals |
| Operating Temperature | -20°C to +80°C |
| Max. Pressure | 280 bar (4000 psi) |
| Displacement | 45 cc/rev (nominal) |
| Quality Standard | Original Eaton / HOWO OEM specification |
| Warranty | 12 Months |
The 0620026735 Eaton drum rotation pump is specifically designed for concrete mixer trucks and similar PTO‑driven applications. It is a direct replacement for the original pump used in HOWO and Sitrak mixer chassis, ensuring seamless integration with existing hydraulic circuits. Typical applications include:
The 0620026735 Eaton drum rotation pump is manufactured to the highest quality standards, ensuring it outperforms generic aftermarket alternatives. Based on Eaton’s proven axial piston pump technology, this unit features a precision‑machined swashplate, hardened pistons, and a robust cylinder block that deliver smooth, efficient operation even under continuous heavy loads. The pump housing is constructed from high‑strength cast iron with advanced anti‑corrosion treatment, ensuring long‑term reliability in the presence of moisture, contaminants, and temperature extremes. Each pump undergoes rigorous factory testing to verify pressure output, flow rate, and sealing integrity before leaving the production line. This commitment to quality translates into consistent drum rotation, reduced fuel consumption, and extended hydraulic component life.
Eaton Hydraulic Excellence
Precision‑engineered axial piston design delivers high efficiency, low noise, and consistent flow.
Corrosion & Wear Resistant
Advanced coatings and hardened internals resist wear from hydraulic oil contamination and corrosion.
100% Factory Tested
Every pump is tested for pressure, flow, and leakage to guarantee performance and reliability.
Genuine Eaton / HOWO Quality
Manufactured to original specifications – guaranteed fit, form, and function.
Installing the 0620026735 Eaton drum rotation pump requires specialised knowledge and should be performed by a qualified hydraulic technician. Always refer to the appropriate workshop manual for your HOWO or Sitrak mixer model. Before installation, ensure the hydraulic system is depressurised and the work area is clean to prevent contamination. Replace all sealing rings, O‑rings, and gaskets with new ones supplied in the installation kit. Prime the pump with clean hydraulic oil before starting the engine to prevent dry running. After installation, check for oil leaks, verify the pump drive alignment, and test the drum rotation under load. Regular maintenance includes changing the hydraulic oil and filter at recommended intervals, inspecting the pump for external leaks, and monitoring system pressure.
Choosing the 0620026735 genuine Eaton drum rotation pump is an investment in the long‑term reliability and productivity of your HOWO or Sitrak concrete mixer. Inferior aftermarket pumps often use substandard materials, imprecise machining, and inadequate testing – leading to premature failure, reduced drum speed, and costly downtime. By using a genuine OEM component that adheres to Eaton’s exacting standards, you guarantee perfect fitment, consistent hydraulic performance, and maximum durability. Fleet operators and workshop professionals worldwide trust this pump to deliver the reliable drum rotation required for consistent concrete quality and efficient job site operations. With its 12‑month warranty and proven performance, it is the definitive choice for those who refuse to compromise on quality.
“We have been using the 0620026735 Eaton drum rotation pumps across our fleet of HOWO concrete mixers for over three years. The consistent performance, smooth speed control, and exceptional durability have significantly reduced our downtime and maintenance costs. This is the only pump we trust for our mixer operations.”
The 0620026735 Eaton drum rotation pump is designed to fit a comprehensive range of HOWO and Sitrak heavy‑duty trucks equipped with concrete mixer bodies and PTO systems. It is a direct replacement for the original pump fitted at the factory, ensuring a seamless swap without any modifications. Always confirm the OEM number 0620026735 on your original pump or by cross‑referencing your vehicle’s VIN with the Sinotruk parts catalogue. For any uncertainty, consult your local HOWO or Sitrak dealer with your chassis number.
Concrete mixer trucks operate in some of the most punishing environments – from extreme heat and dust to freezing temperatures and constant vibration. The 0620026735 Eaton drum rotation pump is engineered to withstand these extremes. Its robust cast iron housing and hardened internal components resist wear, corrosion, and fatigue, ensuring reliable performance over thousands of operating hours. The advanced sealing system prevents oil leakage and contamination ingress, even under high pressure and thermal cycling. This pump is built to deliver consistent drum rotation speed and hydraulic power for the entire service life of your mixer, reducing the need for costly and time‑consuming repairs.
Extreme Temperature Tolerance
Reliable operation from -20°C to +80°C – maintains performance in both hot and cold climates.
Vibration & Shock Resistant
Robust construction withstands constant road vibrations and drum load variations without compromising performance.
Contamination Resistance
Precision‑machined components resist wear from oil impurities, extending service life.
High Pressure Capability
Rated for up to 280 bar – delivers the hydraulic power required for heavy‑duty drum rotation.
The 0620026735 Eaton drum rotation pump is supplied in robust, purpose‑designed packaging to ensure safe delivery and convenient storage. Each pump is individually wrapped in anti‑corrosion material and secured within a heavy‑duty carton with foam inserts to prevent any damage during transit. The package includes the fully assembled pump with all necessary sealing rings and O‑rings for installation. Bulk ordering options are available for workshops, fleet maintenance depots, and OEM service centres, offering significant cost savings and streamlined inventory management. Every pack is clearly labelled with the OEM number 0620026735, product name, and applicable vehicle models for easy identification. Always verify the OEM number on the label before installation to guarantee you are using the correct genuine component.
OEM: 0620026735 | Genuine HOWO / Eaton Drum Rotation Pump (4633-045)
Choose 0620026735 Eaton drum rotation pump – the professional‑grade hydraulic power solution that delivers exceptional performance, outstanding durability, and reliable operation for your HOWO or Sitrak concrete mixer truck.
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