Product Description:
Installation and Maintenance: Gearboxes are to be rigidly mounted so as to minimize the effect of fluctuating or heavy loads. Always check the alignment after bolting down. After installation and alignment has taken place, properly locate the gear unit by means of dowels at appropriate locations preferably in diagonal direction.
The use of flexible couplings (Love joy / Gear coupling flanges with rubber bushes/tyre couplings) is very important for the improved performance of the gearbox. The couplings are to be lined up to avoid the misalignment of angularity and eccentricity.
Change of Handing: When changing the handing of the slow shaft extension, the shaft complete with worm wheel, bearings etc. should be reversed as a unit. It should be appreciated that this has the effect of reversing the offset of the wheel relative to the worm. When changing the slow speed shaft handing of V type units, it should be noted that the position of the wheel relative to the case must not be changed; it is necessary therefore to press the wheel from the shaft. The position of the shaft in relation to the worm wheel must be reversed. The end covers should be located in their respective positions.
It is necessary to check contact markings on the worm wheel teeth and if any axial adjustment of the worm wheel is necessary, it can be effected by means of the shims between covers and bearing housing, which should be moved from one side to the other. It is essential that the top half of the gear case be replaced in its original position (Not applicable for Adaptables).
The contact marking is checked by painting the worm with red lead of Prussian Blue and rotating the worm by hand while applying a small breaking pressure to the wheel by hand. The correct marking should be slightly heavier on the "leaving side" of the teeth, relative to the direction of rotation of the worm, so as to provide "lead in" for the lubricant and to avoid concentration of pressure on the entering side as this would affect the smoothness of operation.
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