HANNOVER MESSE 2018,
23 - 27 April
The new patented "BOX" series of worm gear units is made with die-casting aluminium housing from size 25 up to 90, and in cast iron from the size 110.
The housing has been designed with parametric three-dimensional CAD SW supported by programs of analysis of the thermal dissipation capacity and the structural resistance/deformation under the effect of working loads.
In order to increase silence, efficiency and duration, the wormshaft is made in case hardened steel and ground machined, while the worm wheel is in shell cast bronze. Before being assembled, the worm wheel is submitted to a running-in working period to improve the surface finishing and hardness.
From type 75 and up, 2 taper roller bearings are mounted on the wormshaft, improving the mechanical resistance to the axial loads given by the wormwheel.
Moreover, the combination of this characteristic and 2 nilos (mounted on the unit sizes 75 up to 110 to keep lubrication grease inside the bearings even when they are not touched by the oil bath), permits the mounting of the whole BOX range, from the size 25 to the size 150, in the positions V5 and V6 without any need of additional interventions
The gear unit is equipped with a full set of filler, level and breather plugs, permitting all mounting positions and facilitating the management of the stock.
Lubrification is already provided by Motive with long-life synthetic oil up to size BOX90, and with mineral oil from size BOX110.
The housing shape has been studied to optimize the water draining during washing.
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