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An introduction to the 
AP/APM212 family

 

Environmentaly friendly:
Extremly low noise emissions

 

Gear pumps are widely used in modern hydraulic systems thanks to their high performance, long service life, and low purchase and maintenance costs. Product development has led to the new AP212 family being capable of achieving high operating pressures, excellent volumetric and mechanical efficiency, and even lower noise emission from specially engineered units (LN – Low Noise).
 

This has all been made possible by:

  • New gear teeth and balancing block designs
  • The application of high-performance materials
  • Carefully controlled heat treatment
  • Even tighter coupling tolerances and a higher surface finish standard
  • Continuous development and testing in our semi-anechoic chamber 
     
Bucher Hydraulics has achieved these results by constantly improving our design, control, and manufacturing techniques in line with the latest technological advances, while at the same time enhancing our quality control system which ensures that every single product is of the same high standard.
 
 

Technical Data

 
Characteristics

Displacement

Max. cont. pressure

Fluid temperature range

Recommended fluid

Viscosity range:
Recommended
Permissible
Permissible for starting

Recommended
Cleanliness class
Operat. pressures > 170 bar
Operat. pressures < 170 bar

Seal material

Values, Units

4,4 – 27,1 cm³/U

250 bar

- 20 bis + 80° C

mineral-oil based hydraulic fluid


20 - 120 mm²/s (cSt)
up to 700 mm²/s (cSt)
2000 mm²/s (cSt)



20/18/15 ISO 4406:1999
21/19/16 ISO 4406:1999

NBR standard (HNBR optional)

 

Improvements to gear pump and motor components

 
 

(Click on the picture for a larger view.)

 

Click here for detailed product information.