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Wheel loaders get Rexroth boost

01 October 2007

Bosch Rexroth has targeted wheel loader manufacturers with a new range of components designed to improve performance, versatility and operator comfort and safety.

Bosch Rexroth has targeted wheel loader manufacturers with a new range of components designed to improve performance, versatility and operator comfort and safety.

The range includes pumps and motors, control blocks, brake systems, steering units, gear pumps, valves and supporting software packages.

A highlight of the new range was pinpointed as the high-efficiency hydrostatic transmission systems with electronic pump control.

Rexroth’s Sean Kilgallen explained the significance of these new systems and said: “Old hydraulic control pumps are factory set to ‘match’ the engine they are driven by but are then ‘dumb’.

“New electronic control pumps take real time signals from the engine and can be run by giving maximum performance at the optimum engine speed for fuel economy and power. Furthermore they can automatically derate so they can account for working at high altitude or poor quality fuel found in some countries.”

Rexroth claims an additional bonus is that a given size of engine delivers up to 5% more useful power than with conventional transmission systems.

In addition to its wheel loader drives, Rexroth is offering a new ride control valve. This costs less than its predecessor and is designed for quick and easy installation. Furthermore, it needs less accumulator capacity.

The company says in use, it delivers benefits that include reduced pitching of the loader, improving operator comfort and allowing it to be driven faster without losing material from even a fully loaded bucket.

Ride control is also claimed to enhance safety. By ensuring the wheels have constant contact with the ground the braking and steering of the wheel loader is more precise and dependable.

A major UK wheel loader manufacturer has just changed over to electronic control and claims to be pleased with the result.


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