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proDucts Bearings & linear motion
Available in the UK from Heason Technology, the Electrak LL series high performance electric actuators from Thomson Industries are aimed at applications where long maintenance-free working life and extended duty cycle lifting and moving tasks in challenging environments are prime requisites. The Electrak LL combines a high-
high performance electric actuators protection. The controller – which complies to the railway standards EN 50155, EN 60077 and EN 4554 – delivers a constant speed regardless of the actual load and includes controlled braking for repeatable and protected operation for the actuator and its connected equipment. To further ensure safe and reliable
efficiency brushless motor and drive with low friction ball screw and nut mechanics in a sealed IP66 rated housing that includes onboard control. An ideal standalone solution for gate and valve control, pick and place, logistics, materials handling and more, the durable actuator’s 24V supply voltage and high efficiency makes it especially well-matched for mobile machinery applications in construction and agriculture as well as an alternative for pneumatic or hydraulic cylinders on lift and load machinery. With a choice of stroke lengths from
100 to 500mm in increments of 50mm, a full load up to 6kN at 35% duty cycle, and 100% duty cycle for task-dependant lower loads, the actuator has a travel life of 600km. Dynamic load rated options of four or 6kN are available with speeds set at 30 or 15mm/sec respectively. And, with its 35% duty cycle at full load, the actuator is estimated to have a 10 to 20% higher duty performance rating than other comparable electric linear actuators, the company explains. The Electrak LL series’ control card
provides standalone end-to-end position control triggered by separate extend and retract inputs; or, the stroke can be set and adjusted by externally located end of stroke limit switches that can be and configured to provide overtravel
use, overload protection includes current monitoring that isolates the supply if exceeded, replicating a mechanical clutch. The controller further includes temperature monitoring with compensation in addition to voltage monitoring, whilst a mechanical holding brake option prevents back-driving for vertical oriented positioning. The long-life ball-screw and nut assembly also features a load-dependant locking capability. According to the company, wide
application flexibility is ensured with a comprehensive choice of front and rear mechanical interfacing options that include stainless steel pin, forked and threaded adapters. In addition, the Electrak LL is particularly robust and durable with a highly corrosion protected aluminium and polycarbonate housing which is washdown-compatible and includes UV-resistant surface treatment.
Heason Technology
www.heason.com
new 2k ball bearing is wear-resisTanT and quieT
igus has launched the xiros, a two-component (2K) ball bearing which is wear-resistant, dimensionally stable and quiet, even at high speeds. This quiet tribo-optimized ball bearing for high speed and low noise is suitable for use in fans and test lab equipment. With the xiros 2K ball bearing, igus has developed a
lubrication- and maintenance-free plastic ball bearing that guarantees quiet operation through the use of different designs and materials. In the bearing, the blue layer of xirodur D180 material
has a noise-dampening effect. To give the soft, wear- resistant inner material a high dimensional stability, it is combined with a hard shell. Because the soft material is poured into the hard shell of both rings, the balls always run on the soft, high-performance plastic during rotational movement, and are then supported by the shell. Undercuts designed into the balls ensure high adhesion
of both materials and additional stability. The balls are kept apart by a wear-resistant cage made of the igus plain bearing material iglidur J3, igus explains. At the company’s in-house test laboratory, tests showed
around three times less noise at high speeds than standard ball bearings from the xiros range. In contrast to metallic solutions, the tribologically-optimized
bearing does not need to be externally lubricated to maintain this smooth running. Despite the lack of lubrication, the bearing has a long service life with low operating costs. The 2K ball bearing is 10mm in diameter and will be available with inner diameters from 5mm to 12mm. Customised solutions and dimensions are also possible. An online configuration tool for the xiros 2K bearing will be available in the future.
igus
www.igus.co.uk
opening the window on linear motion products
Linear rails and guides, and SFNHR precision ballscrews, have been supplied by Matara UK to Pernamatic Engineering for a new CNC Corner Transom Machine for uPVC Double Glazed Windows. Pernamatic Engineering designed the machine to
meet the customer’s exact requirements. At the heart of the machine is an XY linear system which uses Matara MSB compact 35mm type linear rails and guides and SFNHR precision 20mm ballscrews, which position the internal radius tool to 100 different programmable positions. Compact in size, the MSB Series offers quiet and
smooth motion. It features a 45˚ contact angle to bear an equal load in radial, reversed radial and lateral
3 design sOluTiOns septemBer 2022 2
directions, along with high rigidity, four-way equal load and self-alignment capability. The ballscrews, which are machined in-house at
Matara, suit the fixed ballscrew end supports which give excellent rigidity. Additional benefits of the linear ballscrews include high efficiency due to reduced friction during use, high load capacity at fast speeds, and cost-efficiency. The resulting machine is capable of handling 200
different UPVC window frame configurations and finishes a complete frame in just 80 seconds.
Matara
www.matara.com
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