Danfoss crawler agricultural machinery H1T double pump
Danfoss H1T Tandem Pump for Tracked Agricultural Machinery
As a core component of the closed hydrostatic drive system specifically developed for tracked chassis, the Danfoss H1T tandem axial piston pump integrates reliability, efficiency and modularity, providing powerful and stable hydraulic power support for tracked agricultural machinery such as harvesters, windrowers and tracked loaders. Derived from Danfoss’ legendary H1 technology platform with a field population exceeding 700,000 units, the H1T series has proven its excellent performance in harsh agricultural working environments through decades of market verification.
Core Features & Benefits
- Superior Reliability: Boasting a field failure rate of less than 0.07% over the past decade, the H1T tandem pump is manufactured with high-strength robust materials and undergoes rigorous assembly and testing processes across three countries on two continents, ensuring long-term stable operation even under high-load, dusty and vibrating agricultural working conditions.
- Efficient & Compact Design: Compared with two independent single pumps, the integrated tandem structure features a more compact size and optimized length, which effectively saves installation space in the limited engine compartment of tracked agricultural machinery. Its advanced cradle swash-plate design enables efficient power transmission, while the high total efficiency helps reduce fuel consumption of the machinery.
- Versatile Control Options: The pump supports a wide range of control modes, including electrical displacement control (EDC) and manual displacement control (MDC), with standardized connector interfaces for easy integration. All control and sensor options are compliant with Danfoss Plus+1® technology, allowing for quick creation and modification of electrical machine control systems, and realizing integrated management of machine control and diagnostics through a single operational network.
- Enhanced System Functionality: It can be equipped with integrated control cut-off/brake release valves and 2-speed shift valves, optimizing system-level functionality while reducing overall system costs. The optional same-sided or opposed system ports significantly improve installation versatility, adapting to different layout requirements of tracked agricultural machinery chassis.
Key Technical Specifications
| Model Size | Displacement (cm³/rev) | Nominal Pressure (bar) | Maximum Pressure (bar) |
|---|---|---|---|
| H1T 045 | 45.0 (2.75 in³) | 420 (6092 psi) | 450 (6527 psi) |
| H1T 053 | 53.8 (3.28 in³) | 380 (5511 psi) | 400 (5802 psi) |
| H1T 060 | 60.4 (3.68 in³) | 420 (6090 psi) | 450 (6527 psi) |
| H1T 068 | 68.0 (4.15 in³) | 380 (5510 psi) | 400 (5802 psi) |
Other Key Specifications: – Rotation Direction: Right hand (clockwise) or optional configurations – Mounting Flange: SAE B 2-bolt flange (M12 screws and hardened washers required) – Charge Pressure Relief Setting: 24 bar – Filtration: Remote full flow filtration – Paint & Name Tag: Black paint with standard Danfoss tag
Application in Tracked Agricultural Machinery
The Danfoss H1T tandem pump forms a bilateral drive system with the BMVT travel reducer, which is specially designed for tracked chassis of agricultural machinery. This system integrates a two-point variable motor, flushing valve and braking device, realizing smooth and precise steering and forward/backward movement of tracked machinery. Typical applications include:
- Tracked harvesters (combines, forage harvesters)
- Windrowers and swathers
- Tracked agricultural loaders
- Turf care equipment for large agricultural fields
When matched with Danfoss S45 series open-circuit pumps, PVG multi-way valves and ECO valves, the H1T tandem pump can also form a load-sensing system, providing powerful power for various working devices of harvesters and enabling stepless speed regulation of each action, significantly improving the operational efficiency and fuel economy of agricultural machinery.
