Posted to News on 8th Nov 2013, 13:57
New range of modular gearboxes with higher power density
The new range of Lenze g500 geared motors takes advantage of developments in materials and machining to get more drive torque out of a given size. At the same time weight is reduced and a high running efficiency is achieved with four alternative types of AC motor. The g500 range is launched at the SPS/IPC show in Nurnberg, November 2013, for output torques up to 600Nm.
Lenze's g500 geared motors are available in helical, shaft-mounted helical and helical bevel designs. Although the helical models are expected to be the most popular, the shaft-mounted helical offers a cost-effective mounting option with its hollow output shaft. The helical bevel right-angle models have either a hollow or a male shaft and ratios up to 100:1 are possible. Typical running efficiencies are 96 per cent, and the low heat losses have contributed to high performance. Output torques show increases up to 20 per cent whilst sizes are typically 20 per cent smaller. This leads to weight reductions of up to 40 per cent. Assembled lengths are shorter too, thanks to an innovative threaded connection between motor and gearbox.
There are four motor options available for the g500 range. At lower powers IE1-rated motors are suitable, but the connection of IE2 motors is equally possible. Where a frequency inverter is to be used the Lenze MF range of motors is a good option, allowing the motor frame to shrink by up to two sizes. The new Lenze Smart Motor is another option, suitable for conveyor and material handling, with freely settable speeds from 500 to 2000r/min plus soft start/stop ramps.
Rune Friis-Knutzen, Lenze Head of Product Development comments: "As the losses are so low, the motor has to deliver less energy which improves the bottom-line efficiency of the whole system. Furthermore the lower level of generated heat and improved cooling air flow increases the service life of the oil dramatically."
With the g500 range Lenze has gone back to the drawing board and asked serious questions on all aspects of the design. The result brings benefits to machine builders, with higher power density, higher efficiency and longer life. After this first phase the range will be extended in cast iron models for torques up to 13000Nm.
Lenze's Smart Motor is available as a package with the new Lenze g500 range of gearboxes. There are three different configurations - helical, shaft mounted helical and helical bevel - with outputs up to 600Nm. These gearboxes are smaller and lighter than previous models, but also offer high efficiency at around 96 per cent. Combined with the Lenze Smart Motor, efficiency is at IE3 levels with an additional "eco' option for cost saving at partial loads.
Follow the link for more information about the Lenze g500 geared motors.
