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Gears are generally divided into three categories

Release time:2024-06-20

There are a wide variety of gears, and their classification is usually based on gear axiality. It is generally divided into three types: parallel axis, intersecting axis and staggered axis.

1) Parallel shaft gears: including spur gears, helical gears, internal gears, racks and helical racks.

2) Intersecting shaft gears: straight bevel gears, spiral bevel gears, zero-degree bevel gears, etc.

3) staggered shaft gear: staggered shaft helical gear, worm and worm gear, hypoid gear, etc.

The listed efficiency is the transmission efficiency, excluding the loss of bearings and stirring lubrication. The meshing of the gear pairs of parallel shafts and intersecting shafts is basically rolling, and the relative sliding is very small, so the efficiency is high. Staggered shaft helical gears and worm and worm gears and other staggered shaft gear pairs, because they rotate through relative sliding to achieve power transmission, the influence of friction is very large, and the transmission efficiency is reduced compared with other gears. The efficiency of the gear is the transmission efficiency of the gear under normal assembly conditions. If the installation is not correct, especially the bevel gear assembly distance is not correct and lead to the same cone intersection error, its efficiency will be significantly reduced.

keyword: Gear,Shaft