Hydraulic systems are at the heart of many industrial and mobile machines. Closed-circuit variable-displacement axial piston pumps, such as the Bosch Rexroth A4VG series, require reliable filtration to maintain their long-term performance. Learn why a precisely matched filter element is crucial for your hydraulics – and how Hengst Filtration impresses with tailor-made products for the A4VG series.
The Solution: Filter Elements from Hengst – Precision Meets OEM Expertise
Hengst Filtration offers specially developed filter elements for the A4VG pump series from Bosch Rexroth. The Hengst 62 series has been precisely tailored to the requirements of the respective pump size (nominal size).
Advantages of Hengst filter elements
- Optimal particle separation according to ISO 16889 (beta ratio ≥ 200 at 10–20 µm)
- High dirt holding capacity with low differential pressure
- Thermally and chemically resistant materials
- Long service life, even under continuous load and temperature stress
- OEM-specific fit for fast and safe maintenance
Assignment: Which filter elements fit which pump?
Below is an overview of the most common combinations of Hengst filters and Rexroth pumps:
Rexroth-No: Hengst-No: Filter type Nominal size (pump)
R902603004 100841B 62.0180K 180 (Series 32) & 145, 175, 210, 280 (Series 40)
R902603243 100844B 62.0125K 71, 90, 125 (Series 32) & 85, 110 (Series 40)
R902603298 100845B 62.0056K 40, 56 (Series 32) & 45, 65 (Series 40)
These assignments ensure that each pump unit is operated with exactly the right filter element – for maximum efficiency and safety in the system.
Where are these pumps (and filters) typically used?
Bosch Rexroth A4VG pumps are installed worldwide in a wide variety of applications – wherever closed circuits and the highest performance requirements are required:
In all of these areas, the hydraulic oil must remain clean even during peak performance – and Hengst offers reliable, application-specific filtration solutions for precisely this purpose.
Mobile machinery
e.g. excavators, wheel loaders, harvesters
Marine applications
e.g. drive systems
Industrial hydraulics
e.g. presses, injection molding machines
Material handling / conveyor technology
Why choose Hengst?
Hengst Filtration is an experienced specialist for hydraulic filters with a strong focus on OEM compatibility. The integration of the Bosch Rexroth filtration business has significantly expanded its expertise in the field of mobile and industrial hydraulics.
BENEFITS AT A GLANCE
- Direct OEM matching - full compatibility with Bosch Rexroth
- Made in Germany - quality you can rely on
- Cost-effectiveness - longer service life, less maintenance, fewer breakdowns
- Technical support - expert knowledge directly from the manufacturer
Practical tips
- Always check the nominal size: Only precisely fitting filter elements guarantee the required filtration performance
- Replace filters regularly: Even the best filter has a limited service life - observe the interval!
- Document oil cleanliness: Modern systems use sensors for online monitoring of oil cleanliness - use this for predictive maintenance!
- Use original filters: Hengst filter elements are precisely matched to the pumps - replicas pose risks to system integrity.
CONCLUSION
The hydraulic performance of a Bosch Rexroth A4VG pump depends on the quality of its filtration. Hengst Filtration's 62 series filter elements offer the right solution for every pump size – with maximum protection, a long service life, and optimal flow characteristics.
If performance, efficiency, and reliability are important, the combination of Bosch Rexroth and Hengst Filtration is a must.
Get advice now – with FILCOM GmbH, your Hengst partner.
Not sure which filter element is best suited to your A4VG pump? Or would you like to specifically improve your maintenance and repair concept?
FILCOM GmbH, an authorized Hengst Filtration sales partner, can provide you with expert support in selecting the right filter solution – precisely tailored to your application and system requirements.
Contact us – we will provide you with personalized, technically sound, and manufacturer-focused advice.
Carmen Steiner
Sales & Marketing
- c.steiner@filcom.de
- +49 711 / 441 33 22 - 36