What do planetary gear sets do?

What do planetary gear sets do?

Planetary gears are often used when space and weight are an issue, but a large amount of speed reduction and torque are needed. This requirement applies to a variety of industries, including tractors and construction equipment where a large amount of torque is needed to drive the wheels.

What are the 4 main components of a planetary gear set?

Here’s what they are and how they work.

• Wheel drive. In a wheel drive planetary gearbox, the sun gear drives the surrounding planetary gears which are fixed to a carrier.
• Shaft Output. In shaft drive gearboxes, the sun gear drives the surrounding planetary gears which are housed in a rotating carrier.
• Spindle Output.

What are the 3 main components of a planetary gear set?

Each planetary gear train only contains three basic links: the sun gear, the carrier gear, and the ring gear (the planet gear is not considered in this graph model).

How many outputs does the planetary gear set have?

one output
The planetary gearset is much more versatile, since it has two inputs and one output.

How many gear ratios can you get from a planetary gear set?

Single-stage planetary gearhead ratios range from 3:1 to 10:1. Gear ratios cannot exceed 10:1 because pinion gears can be made only so small. Gear ratios greater than 10:1 are possible with an additional planetary stage, although this normally increases length and cost.

How does the planetary gear set increase or decrease speed and torque?

The planet gears are mounted on a joint carrier that is connected to the output shaft. The rotational speed of the output is lower than that of the drive, and the torque of the output is higher in reverse proportion. The more gear wheels mesh with each other, the higher the torque.

How many ratios are in a planetary gear set?

Most commonly-encountered geartrains are relatively simple, having only one input and one output, and thus only one overall ratio. The planetary gearset is much more versatile, since it has two inputs and one output.

Does planetary gear increase torque?

A planetary gearhead takes a high-speed, low-torque input, say from an electric motor, then increases torque and reduces speed at the output by the gearhead ratio. This lets motors run at higher, more-efficient rpms in equipment that operates at low speeds.

How are the number of planet gears determined?

To make calculating planetary gear ratios as simple as possible, note the number of teeth on the sun and ring gears. Next, add the two numbers together: The sum of the two gears’ teeth equals the number of teeth on the planetary gears connected to the carrier.

How many gear can a planetary gear set?

Planet gear(s): Usually two to four peripheral gears, all of the same size, that mesh between the sun gear and the ring gear.

How to make a planetary gear set with cardboard?

The parts are all laid out in a pdf file and then transferred to the Laser Cutter software.

What are the two types of planetary gear sets?

Sun: The central gear

How does planetary gear set work?

Planetary Gears. Planetary gears normally consist of three parts; A single sun gear at the center,an internal (ring) gear around the outside,and some number of planets that go

What are the components of planetary gear?

Automatic transmissions