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KYB MAG-170VP-3800 Travel Motor
The KYB MAG-170VP-3800 is an integrated swashplate axial piston travel motor designed for medium-duty tracked machinery. Featuring an internal planetary reduction and mechanical parking brake, it delivers reliable, high-torque performance for 25–30 t excavators and equivalent tracked equipment. Rated pressure is 34.3 MPa, with peak torque up to 3,800 kgf·m. Key characteristics include dual-speed variable displacement, smooth operation, robust braking, and long-term durability, making it a proven choice for travel drive systems in this weight class.
Key Features
Integrated Dual-Speed Variable Displacement Structure
Swash plate axial piston motor with high-strength planetary reducer for a fully integrated unit. Rotating housing design fits in-track installations. Dual-speed variable displacement is externally pilot-controlled, allowing low-speed high-torque for climbing and high-speed travel. Compact design ensures efficient power transmission and space-saving installation.
High-Pressure Stable Output & Strong Torque
Optimized hydraulic balance design with precisely matched pistons, slippers, and swash plate. Rated pressure 34.3 MPa ensures long-term stable operation with excellent volumetric and mechanical efficiency. Peak torque 3,800 kgf·m meets the power requirements of 25–30 t equipment for heavy starts, steep climbs, and soft or muddy terrain, with strong load fluctuation tolerance.
Built-In Hydraulic Protection, Low Impact & Low Noise
Integrated balance, relief, and anti-reversal valves reduce pressure shocks during start, direction change, and braking, minimizing vibration and hydraulic noise. Optimized internal flow paths reduce throttling losses, improve efficiency, and prevent motor damage from overload or over speed.
Fail-Safe Mechanical Parking Brake
Spring-applied, hydraulically released brake automatically locks when the machine stops, preventing rollback on slopes. Pilot pressure automatically releases the brake upon startup. Brake and travel actions are synchronized, enhancing operational safety without manual intervention.
Heavy-Duty Durable Design for Harsh Conditions
Planetary gears, main bearings, and other critical components are made from wear-resistant materials with precision heat treatment. Reinforced sealing system withstands dust, vibration, and wide temperature ranges, ensuring long-term reliability and low failure rates.
Wide Compatibility & Easy Maintenance
Standardized mounting interfaces allow direct interchange with equivalent models such as Nabtesco GM38VA and Doosan TM40. Mature mass-produced design ensures global spare parts availability, straightforward maintenance, and low repair costs.
Core Advantages
|
Advantage |
Description |
|
Wide Operating Adaptability |
Peak torque 3,800 kgf·m with 34.3 MPa rated pressure and smooth dual-speed switching provide sufficient power and stable travel for 25–30 t tracked equipment in challenging terrains. |
|
Excellent Travel Control |
Hydraulic damping and vibration reduction ensure smooth startup, direction change, and braking, minimizing shocks and noise for operator comfort and higher productivity. |
|
Comprehensive Safety |
Fail-safe mechanical parking brake plus hydraulic overload protection deliver robust mechanical and hydraulic safety, reducing rollback and uncontrolled movement risks. |
|
High Reliability & Longevity |
Heavy-duty structure and premium components support long-term high-intensity operation, reducing downtime and lifecycle operating costs. |
|
Low-Cost Interchange & Maintenance |
Standardized mounting allows direct replacement of comparable units; global parts availability and mature maintenance solutions lower costs and complexity. |
Applications
Designed primarily for the left and right travel drives of 25–30 t hydraulic excavators, also suitable for medium-duty tracked drills, loaders, crawler cranes, and mining tracked vehicles. Ideal for construction, municipal, mining, and hydraulic projects requiring medium-heavy, continuous, high-intensity operations. It is the mainstream choice for travel drive systems in this weight class.
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