Product Overview
The NABTESCO GM09VN-A-35/21-3 is a high-torque, low-speed hydraulic travel motor engineered by Nabtesco, a global leader in precision motion control and hydraulic drive technology. This unit belongs to the GM series of radial piston type hydraulic motors, specifically configured for closed-loop hydrostatic transmission systems used in mobile and industrial applications. The motor operates on the principle of a rotating cylinder block with radially arranged pistons acting against a cam ring, converting hydraulic pressure into mechanical torque. Its two-stage design (indicated by the 35/21 displacement code) provides selectable high-torque or high-speed operating modes, making it ideal for travel drive systems requiring both gradeability and rapid transit capability. The GM09VN-A-35/21-3 is commonly integrated into the final drive of tracked and wheeled machinery, delivering reliable propulsion with exceptional starting torque and smooth low-speed controllability.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Travel Motor (Radial Piston, Two-Speed) |
| Model Designation | GM09VN-A-35/21-3 |
| Operating Pressure | Up to 350 bar (rated), 400 bar (peak) — typical for GM series |
| Displacement (Dual) | 35 cm³/rev (high torque) / 21 cm³/rev (high speed) |
| Mounting & Connection | Standard SAE / ISO flange, splined shaft, cartridge-style valve interface |
| Control Type | Integral two-speed shift valve (hydraulic pilot) |
Engineering Features & Advantages
- Precision Performance: Radial piston design with hardened cam ring and precision-ground pistons ensures high volumetric efficiency, uniform torque output, and minimal internal leakage even at low speeds.
- Two-Speed Capability: The 35/21 displacement configuration allows automatic or pilot-controlled shifting between high-torque and high-speed modes, optimizing machine productivity and fuel efficiency.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, including high shock loads, dust, and temperature extremes. Heavy-duty bearings support external radial and axial loads directly.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Nabtesco GM09 series travel motors, ensuring drop-in replacement without modification to the final drive or hydraulic circuit.
- Integrated Braking & Flushing: Optional integral parking brake and flushing valve provisions maintain system cleanliness and safety during travel stops.
Typical Industrial Applications
This hydraulic travel motor is widely deployed in heavy-duty mobile and industrial drive systems, including: tracked excavators and crawler cranes for propulsion; wheeled loaders and dozers requiring high drawbar pull; drilling rigs and tunnel boring machines where precise low-speed torque is critical; and marine winches or deck machinery with variable speed demands. Its robust construction also suits metallurgical handling equipment and heavy-duty industrial transfer cars operating in harsh environments.
PRODUCT IMAGES
NABTESCO GM09VN-A-35/21-3 Hydraulic Travel Motor
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine NABTESCO GM09VN-A-35/21-3 Solenoid Directional Control Valve. This Japan-made hydraulic component features a spool-type design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.