Leine & Linde’s 2000 series of bearingless encoders for large shafts consists of a rotating ring and a fix scanning unit which detects the speed through contactless scanning. “Our customers like the principle of contactless scanning,” says Linda Carnbo, product manager for Leine & Linde’s speed sensors. “The solution is immune to mechanical wear as it has no bearings or other contact surfaces. That suits heavy industries where you normally find big stresses on the machinery.”
The 2000 series is developed to accommodate shaft sizes ranging from 100 mm to several metres in diameter. “The goal is to give our customers the ability to measure speed efficiently on any type of application where a standard bearing-based rotary encoder is not applicable,” she continues.
Carnbo explains that there are several advantages to fitting the speed sensor directly to the main shaft. “You avoid extra mechanical parts like adaptor shafts and flanges and this decreases the total machine length so that space and weight are minimised. Our segmented ring can be installed between other parts on the shaft and this gives engineers more flexibility in the design phase – they don’t have to save the end of the shaft for a standard encoder. Measuring the speed directly on the main shaft also has functional advantages – you always get the true speed feedback of the machine, even if, for example, a gearbox breaks,” she says.
In machines used in demanding applications huge mechanical forces are at work. The machine shaft has a certain eccentricity at installation and is also subject to loads and impacts during operation. “One customer requirement has been to increase the installation distance between the ring and scanning unit,” Carnbo continues. “Therefore we have created a new solution that enables scanning up to 6 mm.”
The 2000 series is made for easy installation. An example is a customer wanting to upgrade an installed machine with an encoder in a position where the machine is not prepared for it, or install it between two motors in series. A segmented ring which can be mounted directly on the drive shaft solves the problem. With Leine & Linde’s ClampFit solution it is even possible to mount the ring directly on a round shaft, without the need for flanges or other fixing solutions.
“We are always interested in maintaining a dialogue with our customers as this helps us to design new solutions for their applications. Many of our new features come directly from customer suggestions. We can also carry out minor adaptations like delivering a ring with two separate scanning units for redundancy,” Carnbo concludes.
Miniature inductive sensors ifm - South Africa
Sensors & Transducers
The inductive IY/IZ type sensors from ifm are used in various industrial areas where space is limited.
Read more...PDS implementation on mines
Sensors & Transducers
Level 9 vehicle intervention for collision avoidance has been mandatory on South African mines since 2022, yet the effective roll-out of proximity detection systems remains slower than expected. This is not due to the technical limitations of integration but to operational readiness on site.
Read more...Monitoring analogue process values ifm - South Africa
Sensors & Transducers
Everywhere in industry, electronic sensors are used to detect process values such as temperature, pressure or flow. Process value monitoring often takes place directly in the sensor.
Read more...Protecting buildings’ embodied carbon with retrofitted systems Schneider Electric South Africa
Sensors & Transducers
The World Economic Forum has said that around 80% of the buildings in existence will still be around in 2050; it is therefore essential that in order to combat climate change we retrofit them for energy efficiency.
Read more...Listening for damage to wind turbines
Sensors & Transducers
The Fraunhofer Institute for Integrated Circuits, working in concert with the Fraunhofer Institute for Wind Energy Systems, has developed a solution that can be used to identify cracks and breakage inside wind turbine blades remotely at an early stage.
Read more...Enhancing gold leaching efficiency Endress+Hauser South Africa
Sensors & Transducers
Endress+Hauser offers a range of advanced technologies designed to enhance the stability and accuracy of pH and dissolved oxygen measurements on gold processing plants.
Read more...Powering safer mining with PDS
Sensors & Transducers
With the mining industry under increasing pressure to prioritise safety without compromising productivity, Booyco Electronics is pushing the boundaries of Proximity Detection System and Collision Avoidance System technology across both underground and surface operations.
Read more...The car of the future listens
Sensors & Transducers
The perception of external sounds in cars has been lacking, even in automated driving. That is why Fraunhofer IDMT-HSA is researching the integration of acoustic sensor technology in its KI4BoardNet project with the Hearing Car.
Read more...Telco Sensors for blocked or empty chute detection
Sensors & Transducers
In most industries there is a problem with photoelectric sensors as highly contaminated environments make it difficult to operate and sense reliably. Telco Sensors overcomes this through its powerful high-performance infrared sensors that ensure penetration of harsh pollution to guarantee reliable detection.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version