Grease degradation diagnosis technology
April 2024
Motion Control & Drives
NSK is developing a world-first, a high-accuracy way of rapidly and accurately diagnosing the remaining life of lubricant grease. The company will provide the solution as a mobile app, enabling users to perform the onsite analysis of lubricant condition in bearings and linear motion systems. This innovative capability will reduce the need for grease inspection and replenishment costs, and help companies implement condition-based maintenance strategies. NSK is currently seeking customer input and feedback ahead of launching its new app.
A broad spread of machinery and equipment, from machine tools to railcars, utilise grease-lubricated products like bearings, ball screws, and linear guides. However, grease degrades over time as machinery operates, so onsite lubricant inspection is vital to help maximise uptime and overall equipment effectiveness. In recent years, more companies are switching their equipment maintenance strategy from time-based maintenance to condition-based maintenance. A need therefore exists for a grease degradation diagnosis method capable of rapid and highly accurate deployment on site. Such an app would also help combat labour shortages, and support carbon neutrality efforts.
Existing high-accuracy diagnosis methods rely on laboratory analysis, but this comes with high cost, a lack of suitability for onsite use, and a long wait for results. Visual observation or densitometer methods are thus more common, but suffer from low accuracy. As a consequence, many companies replenish lubricant unnecessarily early to ensure stable operation, resulting in wasteful grease usage.
With these thoughts in mind, NSK set about developing a far more convenient, cost-effective, fast and accurate method of grease degradation diagnosis. Importantly, the new NSK app can analyse the level of lubricant degradation using just a small sample of grease. Chemical changes to the base oil and additives of the grease occur due to heat from operation and oxidation with the passage of time. These chemical changes cause the molecular structure of the lubricant to change and absorb more short-wavelength light, affecting its colour. Grease itself starts off white when new, turning yellow or orange with use and eventually becoming black, which indicates zero remaining life. The NSK app quantifies grease by its colour to calculate remaining life. NSK has a 40+ year history of in-house grease development, allowing the company to base its new grease degradation diagnosis technology on a deep understanding of the chemical composition of lubricants.
Further reading:
Smarter motor technology for high-performance industrial automation
Adroit Technologies
Motion Control & Drives
Adroit Technologies is bringing Mitsubishi Electric’s EM-A series permanent magnet motors to Africa, offering servo-like speed and position control at a lower cost by combining patented sensorless control with the FR-E800 inverter to eliminate encoders while achieving IE5 efficiency.
Read more...
A smarter approach to simplifying motion architecture
Motion Control & Drives
n motion system design, the wiring and drive placement between motor and drive are often decided by default, yet they shape a machine’s cost, footprint and adaptability. Kollmorgen sets out how single-cable and decentralised architectures simplify the cabinet.
Read more...
Robotic case packer achieves 99% uptime
Rockwell Automation
Motion Control & Drives
DCC Automation designed a new robotic case packer for a nutrition supplement manufacturer using delta robots and a unified Rockwell Automation control platform, cutting changeover time from 45 minutes to 5 minutes, and achieving 99 to 99,5% uptime against the previous 10% per-shift downtime.
Read more...
igus puts 3D-printed wear materials to the test
igus
Motion Control & Drives
A new igus white paper compares its tribological iglidur 3D-printing materials directly with conventional POM, reporting lower wear, more stable friction and up to ten times longer service life in gear testing for customised, low-volume and replacement components.
Read more...
SEW-EURODRIVE’s expanded local engineering capability
SEW-EURODRIVE
Editor's Choice Motion Control & Drives
At Electra Mining Africa, SEW-EURODRIVE demonstrated how its expanded local engineering capability, digital technologies and lifecycle support strategy help customers improve reliability, energy efficiency and total cost of ownership across the full life of their drive assets.
Read more...
Latest Danfoss automation drive
Bearing Man Group t/a BMG
Motion Control & Drives
BMG has launched the Danfoss iC7-Automation enclosed variable speed drive range in South Africa, backed by significant local stockholding of 400 V models up to 710 kW, approved warranty workshops, and DrivePro digital asset management support.
Read more...
Severe-duty workhorses powering mining
Motion Control & Drives
Mining machines such as rock crushers, pumps and conveyors need motors that combine high torque with robust enclosures, seals and cooling. WEG Africa explains how severe-duty motors deliver more than a decade of reliable performance in harsh conditions while meeting modern energy-efficiency standards.
Read more...
Looking beyond the spec sheet when choosing motion architecture
Motion Control & Drives
When machine builders focus only on torque, speed and price, engineering time, integration effort and long-term maintainability get overlooked. Kollmorgen explains how thinking at the system level, not the component level, leads to better motion architecture choices.
Read more...
Economy drive system closes the drive gap in the entry-level segment
Beckhoff Automation
Editor's Choice Motion Control & Drives
Beckhoff has launched an economy drive system pairing its new AX1000 servo drive and AM1000 servomotor with the AF1000 dual-axis variable frequency drive on a shared EtherCAT platform, targeting series machines and price-sensitive markets without sacrificing TwinCAT integration or functional safety.
Read more...
SEW-EURODRIVE showcases modernisation and lifecycle support at Electra Mining Africa 2026
SEW-EURODRIVE
Motion Control & Drives
At Electra Mining Africa 2026, SEW-EURODRIVE showed how it has expanded beyond equipment supply into integrated engineering solutions, plant modernisation and long-term lifecycle support for mining and industrial operators across Africa.
Read more...
printer friendly version