Power transmission company Brevini has combined the high efficiency, low weight and high reduction ratios of its planetary gear stages with the higher capacity, strength and durability of bevel helical gears to develop the Posiplan range of hybrid gearboxes. The result is high capacity from smaller units, reducing the necessary size of gearbox for each application.
Brevini says it created the Posiplan range in response to the reluctance of some engineers to use planetary gearboxes due to the shaft not being engaged all the way through the gearbox: the Posiplan’s helical final stage reduction nullifies this concern.
A modular cast casing design and a broad range of mounting options have reduced manufacturing times and design costs, whilst maintenance engineers and plant managers using the gearboxes in replacement situations will find the use of labyrinth sealing technology and high performance bearings brings an extended operating life, even in the harshest environments.
Fitting flexibility
Using these gearboxes in a shaft-mounted configuration offers the flexibility of fitment in any orientation and can be used to replace high-wearing/high-maintenance exposed transmission alternatives such as belts, chains and pulleys. Costs can also be reduced over worm/wheel transmissions due to higher efficiency operation, requiring a smaller motor to drive it as well as the actual units themselves being lower in weight and price competitive.
“The Posiplan range is well suited to a number of industries, including those where there is a typically harsh environment such as mining and metalworking," said Brevini UK sales manager Dave Brown. "The low weight and overall size that typifies planetary gearboxes means that they can be installed in most areas and often require less energy to run; while the bevel helical output ensures that the gearbox has the strength and durability required for heavier loads."
