How To Select Planetary Gearbox?

The steps involved in the selection of planetary gearboxes are given below. The following parameters should be known before starting the selection of Planetary Gearbox

       1. Torque to be transmitted (output torque)
2. Motor Power (kW)
2. Input speed (RPM)
3. Output speed (RPM)
4. Operating condition (i.e. No of Start-ups per hour and it subject to impacts
5. Ambient temperature (°C)
6. Radial load on output and input shaft thrust load if any.

The steps involved in the correct selection of Planetary Gearbox are as follow

STEP 1: Select the reduction ratio

The reduction ratio can be calculated as the input speed / output speed. If output torque is not known, then torque can be calculated

STEP 2: Calculate the output Torque(Nm)

Output torque = (P x 9546)/N
Where P is Power in kW (multiply P with 0.746 if power is in HP)
N is output speed (RPM)

STEP 3: Find the service Factor

Service factors are considered based on application type and working hours. See Table 1 for more information. Mentioned in the Top Gear list.

STEP 4: Calculate the Rated Torque

Rated torque = Calculated output torque * service factor

STEP 5: Select the Model from the Catalogue

A.Select the life of Gearbox based upon working hours and output speed (n2h)
B. And based upon rated torque and life select the most appropriate model

STEP 6: Verify the thermal rating for the selected model
Thermal rating is the continuous power transmittable by a gear unit with splash lubrication and maximum oil temperature of 90° C at an ambient temp of 25° & input speed of 1440 RPM.
After the selection of model, it is necessary to check with the thermal capacity of the reducer thermal rating (Kw)

STEP 7: Verification of hollow frame

If the selected planetary gearbox is required in hollow input configuration then it has to be verified for available frame size. Check whether the frame size for given model is suitable for that particular rating of the motor.

STEP 8: Check for Overhang Load

When the output is connected with sprocket, pulley, timing belt, gear or friction wheel there is radial load generated on shaft either high speed or low speed & this has to be checked for overhang load capacity. Calculate the overhung load as per the below-mentioned formula.

Overhang load in N = [(19100000 x P)/(d x n)] x Fc
Where, P is power in Kw (1HP=0.746Kw)
d= is diameter of sprocket /pulley/gear/friction wheel in mm
n= is speed of shaft in RPM
Fc= Is load connection factor. Which is as under
Chain sprocket – 1, Gear-1.06, Sprocket-1.5, V-belt-2.5, Friction wheel-3.

Read more about Planetary Gearbox Price In India

 


Comments

Post a Comment

Popular posts from this blog

6 Types Of Industrial Gearboxes And Their Most Typical Uses

Image
Industrial gearboxes are enclosed systems that transmit mechanical energy to the output device. Gearboxes can convert energy into usable formats by modifying speed, torque and other properties. Gearboxes are used in a variety of devices for a variety of applications. These machines can slow down their rotation to increase torque and speed. The following describes the different types of industrial gearboxes and how they are commonly used. Helical gearbox The helical gearbox is a low power consumer and has a small size. This equipment is used for a wide range of industrial applications, but is typically used for heavy duty applications. Helical gearboxes are widely used in plastic, cement, rubber and other heavy industry environments. Coaxial helical inline The coaxial helical gearbox is ideal for heavy duty applications. The coaxial helical inline is known for its quality and efficiency. They are manufactured to high standard specifications to maximize load and transmission ratio. Beve
Read more

Leading Gearbox Manufacturers in India for Travelling Grate

Image
If you are a Travelling Grate Manufacturer and are looking for a reliable supplier of Gearboxes then you are at a right place. This blog will give you a clear insight of reliable manufacturer of gearboxes for travelling grate. Top Gear Transmissions the leading manufacturer of Industrial Gearboxes in India is supplying highly efficient and reliable gearboxes for travelling grate application from last two decades. With more than 20000+ gearboxes installed all gearboxes are running satisfactory.  Efficiency of travelling grate is very important, inefficient travelling grate boilers causes a considerable energy waste. According to statistics there are >500 000 industrial boilers, representing about one-third of the total nationwide coal consumption. Most of these industrial boilers are coal fired travelling grate. The thermal efficiency of many of these boilers is only 60–70% which leads to a remarkable waste in energy. Use of hydraulic drives or inefficient gearboxes is also one of t
Read more

Get To Know The Planetary Gearbox Key Features

Image
Planetary gearbox is a gearbox with an input shaft and an output shaft. The planetary gearbox is used to transmit the largest torque in the more compact form (known as torque density). Main features of planetary gearbox 18 frame sizes Gear reducer ratios 1 Speed ​​reducer 3.48: 1 ~ 7.2: 1 2-stage gear reducer 12.1: 1 ~ 51.8: 1 3-stage gear reducer 63: 1 ~ 373: 1 4-stage gear reducer 403: 1 ~ 2687: 1 Efficiency of gear reducer 1-stage gear reducer 97% 2-stage gear reducer 95% 3-stage gear reducer 92% 4-stage gear reducer 90% Gearbox torque range: 576 ~ 447 360Nm Mechanical rating up to 380 kW Axis layout: right angle and parallel column Ideal for high reduction ratio, embedded mount and overload Wide reduction ratio, high torque, and small size For more information visit Top Gear Transmission
Read more