1. Simple "general mechanics" assemblies
These assemblies use parallel spur, helical or chevron gears (see [BM 5 620], figure 4), spur or spiral gears (see [BM 5 622] , figure 2), as well as worm gears (see , figure 6).
We only consider high-quality products, with surface-hardened (usually case-hardened) and ground teeth (ISO 6 minimum quality).
These teeth are generally simple helical with a relatively small angle of inclination (15° max.).
Figure 1 shows the general arrangement of three- and four-stage parallel gearboxes.
Figure
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Simple "general mechanics" assemblies