Very low noise levels
Negligible pressure pulsations
Long service life
4-quadrant (fully bi-directional pump / motor) or
2-quadrant operation is possible
Low susceptibility to cavitation
400 bar maximum pressure
Hydrodynamic bearing support ensures
Suitable for special fluids such as HFB, HFC, HFD and bio-degradables
suitable for variable-speed operation
Optimised flow path cross-sections and special gear profile give low susceptibility to cavitation

Type		Internal Gear Unit
Mounting method		Oval 2-hole flange to ISO 3019/1 (SAE): QXM 3-6 Oval 2-hole flange to ISO 3019/2 (metric) QXM 2+8
Max continous pressure		450 bar
Peak pressure		400 bar
Effective displacement		5-250 cm³/rev
Speed max		6000 rpm
Speed min		100 rpm
Fluids		HLP mineral oils to DIN 51524, Part 2 HFB, HFD and HFC fluids to VDMA 24317 other fluids - contact Bucher Hydraulics
Fluid temperature		HLP--mineral oils 80_C max HFB, HFD and HFC 50_C max
Viscosity range		10...300 mm²/s (cSt)
Minimum fluid cleanliness		NAS 1638, Class 9 or ISO 4406, code 20/18/15 or better
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