Gold Cup pumps and motors, right, manufactured by Parker Hannifin’s Hydraulic Pump Div., recently underwent extensive instrumentation and analysis to understand reported field issues. Technicians determined that torsional vibration related to new engines and unique load conditions were impacting pump and motor performance.
These findings led Parker to develop a new barrel bearing design (middle) that can withstand severe driveline torsional vibration conditions. Parker’s pump designers revised this already-rugged bearing’s configuration and cage to double its strength. A new Severe Duty bearing is now available for Parker’s size 6, 7, and 8 Gold Cup pumps and motors.
A second development concerns an Extreme Duty version (bottom), which uses a single-piece bronze cage for higher strength and low friction for running low-viscosity and unconventional fluids. Available in all Gold Cup sizes, this bearing design is intended for heavy-duty applications in the mining, forestry, oil and gas, and military industries.
Steve Gluck is Technical Support Engineering Team Leader at Parker Hannifin’s Hydraulic Pump Div., Marysville Ohio. Call (937) 644-3915, or visit www.parker.com/hydraulicpump.
Matthew Witter is Principal Engineer and founder of Structural Dynalysis Ltd., Cincinnati. For more information, call (513) 258-1974, or visit http://strucdynltd.com.