Linde developed technology to overcome limitations which restricted swash plate piston pump and motor design for more than three decades. The company claims that the breakthroughs have enabled the swash plate design to surpass that of the bent axis in virtually every area of performance. The long recognised power density and installation flexibility of the swash plate provides major performance improvements, making this design far superior to the bent axis. The new technology has yet to be applied to the larger sizes (>140 cc/rev), so the bent axis design is still needed to satisfy higher flow/torque requirements.
Swash plate design breakthrough
Until this development the mechanical design limit for swash plate units was 18°. Increasing this angle to 21° increases the force transmitted by 18,1%. Linde’s breakthrough allows the increase in swivel angle to 21°. It is accomplished through the piston assembly’s redesign, where the ball of the piston to slipper ball joint is part of the slipper, rather than the piston.
Superior to bent axis
The flexibility of the swash plate design has long been recognised. The compactly designed drive-through capability, which allows for attachments and the elimination of pump drives, offsets the perceived negatives of the design, particularly for pumps. These negatives were traditionally contamination sensitivity and lower efficiencies, particularly in torque transmission.
The new Linde design has effectively eliminated all of these concerns; the relative inefficiencies are more than compensated for by the 21° technology. The use and refinement of hydrostatic bearings that self compensate for wear have made the new units more reliable than their bent axis predecessors.
According to Linde, when improved compactness, cost effectiveness and power density are added to the equation, it becomes clear that bent axis units have a limited future.
Emerson software optimises maintenance
Other technologies
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...Emerson software optimises maintenance
Other technologies
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...R200 part saves recycler millions igus
Other technologies
A simple switch to a polymer bearing, in place of stainless steel, has saved lead acid battery recycler, Frys Metals, tens of thousands of rands in maintenance costs, and much more in preventing lost production time.
Read more...Lube tip: thermal failure in lubricants WearCheck, a division of Synerlytic Services
Other technologies
One of the most common causes of thermal failure in hydraulic fluids and some lubricating oils relates to aeration.
Read more...Superior lubrication capability
Other technologies
Superior lubrication slashes electricity consumption, reduces vibration, and increases protection through dramatically lower friction.
Read more...Approaches to wire rope lubrication
Other technologies
The approaches to wire rope lubrication have shifted in recent years, largely due to important technological advances to improve the application and performance of lubrication products for wire ropes. Locally, Lubrication Engineers has been at the forefront of these advancements.
Read more...Megatrends shaping the auto industry
Other technologies
The automotive industry is in the midst of a technology-driven revolution that will not only advance the safety and sustainability of transportation, but also transform how consumers interact with their vehicles and the OEM brands behind them.
Read more...Lube tip: foaming is affected by oil level WearCheck, a division of Synerlytic Services
Other technologies
In a circulating system, it is crucial to check the oil level before introducing anti-foam agents to address a foaming problem.
Read more...Powerful diagnostic tool for condition monitoring SKF South Africa
Other technologies
SKF has extended its Microlog Analyser family of data collection devices with a new model that offers faster measurement collection and greater diagnostic power. “The new SKF Microlog Analyser that is ...
printer friendly version