Bucher hydraulic pumps.

External gear pumps, series AP...
High Pressure Internal Gear Pumps QX
Internal Gear Pumps QXV (for low-viscosity fluids)

For other Bucher products click Bucher product overview .

External gear pumps, series AP...

External gear pumps, series AP

The essential components of series AP external gear pumps are an aluminium alloy body and two gearwheels supported by plain bearings.

The front flange can be the SAE standard, or the British or German OEM patterns.

The various frame sizes can be combined with each other, enabling double and triple pumps to be assembled.

Advantages

High overall efficiency thanks to optimised hydraulic compensation
Design and materials that guarantee excellent technical specifications and long life service
Optimum quality/price ratio
Customised models can be built for specific applications
Low maintenance requirements, even in heavy-duty operating conditions
Various components and accessories are available for radial/axial loads, pressure/flow control, etc.

Models

Single pumps, unidirectional
Single pumps, reversible (AP05 only)
Double and triple pumps, unidirectional, in several configurations.
With integral flow or pressure control valve (sizes AP100 and AP200 only).
With outrigger bearing for axial and radial loads (sizes AP100, AP200, AP300 only)

Applications

Tractors
Agricultural machines
Lift trucks
Log splitters
Construction machinery
Front loaders
Sweepers
Hydraulic hoists

For further information see the Bucher factory documentation

High Pressure Internal Gear Pumps QX

Internal Gear Pumps QX

The QX pumps are the 5th generation of Bucher internal gear pumps, which have proven themselves in thirty years of service around the world. The straightforward and rugged construction guarantees long service life without the need for extensive maintenance. Tandem and multiple pumps are available worldwide in more than 1000 variants.

Advantages

High pressures
Low noise level
Long service life
Negligible flow and pressure pulsations
Insensitive to contamination of the fluid

Double pumps

QX double pumps consits of two single pumps mounted on a common drive shaft. Hydraulically, the two pumps operate independently of one another but they share a common suction port in the pump´s centre section. The larger pump of the combination is situated at the shaft end (the drive side). With equal frame sizes, the pump with the larger displacement is situated at the drive side.

Triple pumps

The largest pump of the combination is situated at the shaft end. For equal frame sizes, the pump with the larger displacement is situated at the drive side. Pumps 2 and 3 have common suction port.

Applications

Hydraulic presses
Machine tools
Waste compactors
Plastics machinery
Diecasting maschines
Lift/elevator drives
Hydraulic power units
Lift trucks

For further information see factory documentation 1 en factory documentation 2

Internal Gear Pumps QXV (for low-viscosity fluids)

Internal Gear Pumps QXV

The QVX is an internal gear pump for low viscosity. It can develope pressures of 300 bar with high efficiency at viscosities of around 1 mm²/s. The QXV is being used with great success to pump aviation jet fuels, paraffin oil/kerosene, brake fluids, Pentosin and HFA fluids.

Advantages

Very low noise levels
300 bar can be developed at viscosities around 1 mm²/s
Outstanding efficiencies
Long service life
Low pump wear
Low sceptibility to cavitation
Good emergency running properties

Applications

Test rigs for testing Jet A1/ fuel controllers for aircraft turbines
Test rigs for diesel injektion nozzles
Rolling mills
Fuel pumps for gasturbines
Welding machines
Inbrication pump for spindle
bearings

For further information see the factory documentation 1 en factory documentation 2