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Seals & Bearings

Low friction rolling element bearings enable significant energy savings in axial piston pumps and motors

By working closely with a manufacturer of hydraulic pumps and motors, The Schaeffler Group has optimised a number of bearings used in Sauer-Danfoss’ newly developed H1 series of axial piston pumps and motors.

As a result of the new optimised X-life cylindrical and tapered rolling bearings, overall efficiencies of the H1 pumps and H1 motors have increased by around 2 per cent, resulting in significant improvements in energy efficiency levels across the H1 range.

Read more: Low friction rolling element bearings enable significant energy savings in axial piston pumps and...

Barden supplies 440C bearings for optical guidance

For most optical guidance applications, Barden provides bearings in 440C - a martensitic stainless steel that provides good corrosion resistance.

To reduce friction and adhesive wear, the bearings can also be designed with retainers that incorporate PTFE as a source of lubrication, particularly for applications in which oscillatory movement of the bearings is required.
Super-precision bearings are being used to improve optical guidance systems and stabilise camera platforms for military and commercial applications

Super-precision bearings are being used to improve optical guidance systems and stabilise camera platforms for military and commercial applications

Often the bearings are designed with special ball separators (toroids), positioned over every other ball in the bearing and manufactured from a self-lubricating material.

Read more: Barden supplies 440C bearings for optical guidance

igus adds more accessories to Triflex R system

Six innovative products enhance multi-axial energy chain system for robots

Energy chain specialist igus has introduced six new product lines to its Triflex R system of third-generation 6-axis robot energy chains. The multi-axial energy supply system, developed specifically for sophisticated 6-axis robotic applications in harsh industrial environments, now comprises well over 200 components.

“Our primary goal is to provide our customers with technological advances in the robotics industry, while reducing process costs,” said Justin Leonard at igus UK. “With the introduction of these six new product lines to the Triflex R system, all the requirements of large welding robots to small palletizing robots can now be met.”

Read more: igus adds more accessories to Triflex R system

Self-lubricating polymer slew ring bearings

Highly wear resistant, easy to install and completely maintenance-free

25th November, 2009 – Plastic bearing expert igus has developed a range of innovative slewing bearings that use two self-lubricating, low friction polymer sliding elements in place of conventional ball bearings.

As a cost-effective, low noise alternative, the igus PRT polymer slew ring bearing modules are also highly wear resistant, easy to install and completely maintenance-free, while at the same time are robust and have a very high load capacity.

Read more: Self-lubricating polymer slew ring bearings

New hybrid linear bearing combines rolling and sliding

The innovative hybrid linear bearing DryLin® WJRM from igus UK combines rolling and sliding. It was developed for the manual adjustment of machine and guard doors up to 50 kg.Low wear, low friction without lubrication

Linear technology expert igus has developed a completely new breed of hybrid linear bearing that both rolls and slides. Called DryLin® WJRM, this innovative bearing system reduces driving force significantly and is particularly well-suited to applications that combine sliding and rolling movements, such as manually adjustable doors, guards, partitions and locks, as well as for light handling tasks.

The lubricant-free plastic sliding plain bearings ensure the hybrid linear system is robust, insensitive to dirt and humidity, as well as being lightweight and cost-competitive. The polymer rollers, which are also maintenance-free, allow for easy manual adjustment of heavy machine doors and protective doors that can weigh up to 50kg. At a defined installation position, the roller bearing, which carries the main load, reduces the overall driving force by a factor of between four and five – this eases manual operation considerably.

Read more: New hybrid linear bearing combines rolling and sliding

INNOVATIVE BEARING EXTENDS EQUIPMENT LIFE IN WASHDOWN-DUTY ENVIRONMENTS

* design features increase reliability of food and beverage processing automation

Baldor Electric has launched a new Dodge-brand mounted ball bearing incorporating sealing and lubrication innovations that can substantially extend equipment lifetimes in harsh, washdown-duty operating environments such as food and beverage processing.

Dodge ULTRA KLEEN ball bearings employ a 100% stainless steel bearing insert and feature a patented new sealing system and a ball retainer that retain lubrication and prevent washout in wet operating environments.

Read more: INNOVATIVE BEARING EXTENDS EQUIPMENT LIFE IN WASHDOWN-DUTY ENVIRONMENTS

TWO MACHINE BUILDING INNOVATIONS TO DEBUT AT TOTAL

At TOTAL 2010, Baldor is showing for the first time in Europe two new innovations for automation and machine builders that improve reliability and reduce costs.

Baldor believes the first introduction to be the ultimate mounted ball bearing for washdown operating environments such as food and pharmaceutical processing.  Called ULTRA KLEEN, this new Dodge-brand bearing features a 100% stainless steel bearing insert plus a new sealing system and ball retainer that retain lubrication and prevent washout in wet operating environments.

Read more: TWO MACHINE BUILDING INNOVATIONS TO DEBUT AT TOTAL

Baker Motor Testing Ensures Total QA for Air Bearings

Air Bearings Ltd (ABL) of Poole, Dorset, are Queen’s Award winners for Export and Innovation in the design and manufacture of high speed air bearing spindle motors. Their use of the Whitelegg Baker AWA 2.2 analyser enables rapid testing of each motor ensuring total quality control.

Non contact bearing systems offer significant advantages over other low friction devices. In an air bearing the surfaces in motion are separated by a thin film of pressurised air acting under the laws of physics.

Read more: Baker Motor Testing Ensures Total QA for Air Bearings

Reconditioning and durable wear protection for gear boxes and bearings in wind turbines

Figure 6. Optimising the metal surfaces of tribologic systems will increase the parts life time. If the Wind Turbines life is only prolonged with about six days the product costs are already paid. Furthermore there is a targeted exchange and maintenance of the gear box and bearings possible.Use of Wind Energy – Future Development The share of renewable energy sources in total energy consumption is to be increased to 20% in 2020.

Read more: Reconditioning and durable wear protection for gear boxes and bearings in wind turbines

Spares management - a complex issue.

http://www.engineeringmaintenance.info/images/stories/Brammer%20pic.jpgSpares management is a complex issue for manufacturers, almost regardless of the sector in which they are operating. Rapid access to spares is of course vital to maintaining continuity of production and avoiding costly downtime.

However, not only are the required spares often of low value and required infrequently, but the sheer range of components to which a plant needs to have access can be daunting. And, for many, that range of products means dealing with a multitude of suppliers across different product areas – from bearings and mechanical power transmission to hydraulics, pneumatics, tools and personal protective equipment (PPE).

Read more: Spares management - a complex issue.

Linear actuator is ideal for restricted space handling tasks

MKUVS32-KGT linear actuatorMany industrial automation projects – particularly handling tasks within production, machining, handling, assembly, inspection and packaging processes – require machine and linear guidance elements that often need to fit into restricted design spaces.

Schaeffler’s new MKUVS32-KGT linear actuator is a very compact linear actuator with ball screw drive that solves these types of issues. Machine builders and design engineers will find the unit particularly useful as it is suitable for a wide range of applications, where secure, rapid, precise and repeatable positioning and movement of light-to-moderate loads is required.

Read more: Linear actuator is ideal for restricted space handling tasks