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Product news
Short and service-friendly shaft coupling
WITH THE ROFLEX, KTR LAUNCHES a new DIN 740 shaft coupling, characterised by its short design and its service-friendliness.
In addition to power transmission, the ATEX-approved torsionally flexible coupling compensates for misalignments and dampens torsional vibrations. The ROFLEX is available in two designs and currently in seven sizes for torques from 65 to 790Nm.
The short shaft coupling features input and output shafts which can be pushed together between 3mm and 6mm, depending on the size. The torque is transmitted via elastomer packages, which at the same time compensate for misalignments and dampen shocks and torsional vibrations. Should the elastomers fail due to extreme loads, the fail-safe coupling will continue to hold the torque.
The ROFLEX is available in two types: In type N, both the pocket and the cam part consist of standard hubs. In the SH SPLIT design, the cam hub is split with the hub being specifically and mechanically separated into two halves by 'fracture cutting' or 'cracking'. The resulting fracture surfaces centre both hub halves precisely with each other, which makes incorrect assembly almost impossible.
www.ktr.com
PUMP MOTOR WITH SPECIAL FLANGE FOR CHEMICAL PLANT
MENZEL ELEKTROMOTOREN CREATED AN UNUSUAL motor configuration to help out a chemical plant that needed a replacement for a failed pump motor that would be able to accommodate an existing oversized pump flange dimension.
Menzel was able to provide a size 400 motor that matched the performance profile and was light enough for use in the application. It converted a stock, IM B3 type motor (foot mounting) to type IM V1 (vertical flange mounting). The driveend bearing seat was converted for the installation of a thrust bearing. Menzel also manufactured a special flange in-house and adapted it to the shaft, which could only protrude 120mm from the flange. Menzel prepared the motor for installation at the customer's site, shifting the main terminal box to the most accessible position and mounting a cable entry that could be readily adapted to the existing cable diameter on site. The motor, which is now successfully operating in the plant, has a rated output of 315 kW and a nominal voltage of 5,000V. It features the cooling type IC 411 and an IP55 protection rating and weighs 4,900kg.
www.menzel-motors.com
Variable or constant torque in a single package
HP COMBI FROM LAFERT IS A two-in-one offering of a permanent magnet synchronous motor combined with a variable frequency drive. Intended both for variable torque application – typically HVAC – and for constant torque applications – such as material handling, air compressors and vacuum pumps – it promises easy configuration, increased system efficiency and up to 50% reduction in size and weight.
HP Combi's key benefits are a drive pre-configuration that allows for immediate use after installation – the operating parameters are preloaded, so there is no need for further technical settings. It also offers advanced electronic control that allows the user to configure the drive through HP Drive Tools, a user interface app available for PC or mobile platforms, transferable with a dedicated HP Drive Stick (USB). drive near the motor, even in harsh environments.
