John Deere & Hitachi AT Series Pump/Motor | AT457670, AT428960, AT302661 | Hydraulic Piston Pump
| Model Number | At457670, At302661 |
|---|
Product Description
AT Series Hydraulic Piston Pumps & Motors for John Deere & Hitachi
Product Overview: The AT series axial piston pumps and motors are the operational heart of hydraulic systems in John Deere and Hitachi excavators, loaders, and backhoes. Featured models such as AT457670, AT428960, and AT302661 are specifically optimized for high-intensity digging and heavy-duty environments. Known for their superior volumetric efficiency and extended service life, this series ensures rapid cycle times and robust traction under harsh jobsite conditions. We provide high-performance replacement units that meet 100% OEM specifications to restore your machinery to peak performance.
Key Technical Advantages:
OEM-Standard Compatibility: Manufactured strictly to John Deere and Hitachi factory standards (e.g., Part Nos. 83006780, 83005896), ensuring error-free alignment of mounting holes, splined shafts, and porting for a seamless “drop-in” installation.
High-Response Variable Control: Integrated precision control valves modulate displacement instantaneously based on load changes, significantly improving fuel efficiency and reducing system heat.
Reinforced Heavy-Duty Construction: Internal components (Cylinder Block, Pistons, Valve Plate) undergo specialized hardening to maintain minimal internal leakage even under shock pressures exceeding 350 Bar.
Quiet Operation: Optimized hydrodynamic internal flow passages effectively suppress hydraulic pulsation and noise, enhancing the operator’s cabin experience.
Broad Compatibility: Fits John Deere 135G, 210G, 350G series excavators and equivalent Hitachi platforms.
Detailed Models & Parameters:
Core Series: John Deere / Hitachi AT Series.
Key OEM Part Numbers: AT457670, AT428960, AT302661, 83006780, 83005896.
Product Types: Axial Piston Variable Pump / Travel Motor / Swing Motor.
Pressure Ratings: Rated at 31.5 – 34.3 MPa (4500-5000 PSI).
Target Applications: Crawler excavators, wheel loaders, forestry machinery, and various heavy construction equipment.


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