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Advantages of small planetary gearboxes

Categories: Latest NewsRelease time: 2016-04-23 10:10:00
Source: ZHAOWEIEditor: ZHAOWEI Author: ZHAOWEI

Planetary gearing is a gear system that consists of one or more outer gears, or planet gears, revolving about a central, or sun gear. Typically, the planet gears are mounted on a movable arm or carrier which itself may rotate relative to the sun gear. 

Advantages of planetary gears over parallel axis gears include high power density, large reduction in a small volume, multiple kinematic combinations, pure torsional reactions, and coaxial shafting. Disadvantages include high bearing loads, inaccessibility, and design complexity. The planetary gearbox arrangement is an engineering design that offers many advantages over traditional gearbox arrangements. One advantage is its unique combination of both compactness and outstanding power transmission efficiencies. A typical efficiency loss in a planetary gearbox arrangement is only 3% per stage. This type of efficiency ensures that a high proportion of the energy being input is transmitted through the gearbox, rather than being wasted on mechanical losses inside the gearbox.

16MM Plastic planetary DC motor

Another advantage of the planetary gearbox arrangement is load distribution. Because the load being transmitted is shared between multiple planets, torque capability is greatly increased. The more planets in the system, the greater load ability and the higher the torque density are.

The planetary gearbox arrangement also creates greater stability due to the even distribution of mass and increased rotational stiffness.

ZHAOWEI can combine the planetary gearbox either with PMDC brushed motor, or PM brushless motor for your requirements.

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