Bosch Rexroth planter metering vane pump
Bosch Rexroth Fixed Displacement Vane Pump for Seeders
Product Overview
The fixed displacement vane pump specially developed by Bosch Rexroth for seeding machinery is a core hydraulic power component designed to meet the high reliability and stable performance requirements of agricultural seeding operations. It adopts advanced vane pump technology and robust structural design, which can efficiently convert mechanical energy into hydraulic energy, providing a continuous and stable hydraulic power source for the precise seeding, fertilizer application and other key mechanisms of seeders. This product is perfectly adapted to the harsh working environment of agricultural fields, with excellent anti-pollution ability and long service life, which is an important guarantee for improving the operation efficiency and seeding quality of seeding machinery.
Core Features
- Stable Displacement Output: As a fixed displacement vane pump, it can output a constant flow rate under a certain speed, ensuring the uniformity and stability of the seeder’s execution components (such as seeding wheels, fertilizer distributors) during operation, and realizing precise control of seeding quantity and fertilizer dosage.
- Long Service Life: The internally force-compensated design eliminates hydraulic bearing load, greatly reducing wear of key components such as rotors and vanes . At the same time, high-quality seal materials (NBR or FKM optional) are used to effectively resist the erosion of hydraulic oil and external pollutants, extending the service life of the pump .
- Low Noise and Vibration: The optimized cam ring profile and 10-vane rotor structure reduce delivery pressure pulsations, significantly lowering the noise and vibration level during operation , which improves the comfort of the operator and reduces the impact of vibration on the seeder’s mechanical structure.
- Strong Environmental Adaptability: It can work stably in a wide temperature range (-20°C to +60°C) and adapt to various common hydraulic fluids (such as HLP, HFC, HFD, etc.) , which is suitable for the complex and variable temperature and working conditions in agricultural fields.
- Easy Maintenance: The modular cartridge design allows the core components to be easily disassembled and replaced without disconnecting the pump from the hydraulic circuit, simplifying maintenance operations and reducing downtime .
Technical Parameters
| Parameter Item | Specification |
|---|---|
| Displacement Type | Constant |
| Displacement Range (cm³/rev) | 18 – 193 (specific value depends on model) |
| Maximum Operating Pressure (bar) | Up to 210 bar |
| Maximum Flow Rate (l/min) | Up to 80 l/min (varies with displacement and speed) |
| Maximum Rotation Speed (rpm) | Up to 3600 rpm |
| Rotation Direction | Clockwise or Counterclockwise (optional) |
| Seal Material | NBR (standard) / FKM (for special fluids) |
| Mounting Flange | 2-hole mounting flange 101-2 according to ISO 3019-1 |
| Shaft End | Cylindrical with fitting key (ø 22.2 mm / ø 25.4 mm, etc., depending on model) |
Application Scenarios
This fixed displacement vane pump is mainly applied to various types of agricultural seeding machinery, including precision seeders, no-till seeders, compound seeder-fertilizers, etc. It provides reliable hydraulic power for the seeding system, fertilizer application system and soil covering compaction system of the seeder, ensuring the accuracy of seeding spacing, the uniformity of fertilizer distribution and the stability of the whole machine operation. It is widely used in wheat, corn, rice, soybean and other grain crops as well as cash crop seeding operations, and can adapt to different soil types and seeding requirements.
Product Series Reference
Representative product models of Bosch Rexroth fixed displacement vane pumps applicable to seeders include PVV series and PVQ series . Among them, the PVV series is suitable for general industrial and mobile applications, while the PVQ series has higher efficiency in mobile applications due to its axial gap compensation design, which is more in line with the working characteristics of seeding machinery. Specific models can be selected according to the displacement, pressure and installation requirements of the seeder.
