Hydraulic systems on many off-highway vehicles have traditionally been assembled by OEMs who purchase a variety of components from suppliers. That’s changing as OEMs seek help getting vehicles to market quickly and vendors increase their offerings to include complete systems.
The change is coming as market pressures rise, forcing equipment makers to get to market quickly with price competitive vehicles.
System design is a growing focus for most vendors on the IFPE show floor. “We can give people a hydraulic motor or we can integrate it with a drive and brake. System packaging is a key focus for us,” says John Strickland, marketing director at Fairfield Manufacturing Co. Inc., a maker of hydrostatic drives based in Lafayette, IN (www.fairfieldmfg.com).
Others say that the change moves in both directions, with suppliers adding capabilities while OEMs are asking them to do more design work. “Large OEMs are coming to use with a white sheet of paper, letting us come up with a solution,” says Russ, Schneidewind, sales engineer at HydraForce Inc. of Lincolnshire, IL.
In targeted applications, using a system-oriented design meets the needs of a cement truck, for example. Bosch Rexroth Corp. devised a combination that keeps the cement mixer rotating at a constant speed despite changes on the engine load as the vehicle drives. “The pump, electronic controller and motor are sold together, offering a complete hydraulic system,” says Hans Melief, product manager at Bosch’s Fountain Inn, SC, facility.
The trend is going down to the sensors that “We’re offering more integral products, putting a transducer, power and signal conditioning all in one module,” says Manfred Hauck, transportation product marketing director at ITT Cannon of Weinstadt, Germany.
Bosch R exroth
Bosch is combining many parts into complete systems to shorten OEM design cycles.