Planetary Reducer

Planetary Reducer

With the development of industry, the application of industrial planetary reducer is becoming more and more extensive main characteristics are its small size, large transmission torque, high transmission efficiency, wide speed ratio, and high safety. lt mainly used to reduce the speed to increase the torque the main transmission structure of planetary gear reducer is planetary gear, sun gear, ring gear, planet carrier.

Our company's planetary gearbox adopts a modular design, with linear AML and right-angle AMR. Different speed ratios are combined by fixed planetary group modules, which can achieve the flexibility and extensiveness of speed ratio selection. The reducer can achieve one to five speed reduction through modular design. Linear planetary reducer speed ratio range of 3.0-5000, Right-angle planetary reducer speed ratio range of 10-5000, You can also adjust the speed ratio range to meet your special needs. This sample introduces 19 specifications of planetary reducer, with a torque range of 500 to300,000 Nm, and the thermal power covers 100KW.Our company's maximum reducer output torque can reach 1 million Nm, and the power 600KW. The special demand covers 3 million Nm.

1.Technical definitions

1-1 Reduction ratio

i= Reduction ratio effective reduction ratio:

Ratio between the input and output velocity of the gearbox

i= n1/n2

1-2 Speed n1= input velocity: is the input velocity of the gearbox

n2= output velocity: is the output velocity of the gearbox; n2=n1/i

1-3 Lifetime

n2·h= output duration index: product of the output velocity and the duration in hours. lt represents a number proportional to the stress applied to the element which limits the life of the gearbox. To correlate the velocity and the duration, the torque Tcont is expressed as a function of the product n2 ·h. With the speed n2 and the torque Tcont required, the duration in hours can be calculated; or alternatively, if the speed and the duration in hours required are known then the Tcont that the gearbox can transmit can be calculated.

n1*h=input duration index: is the product of the input speed and the duration expressed in hours.

It is used to calculate the duration of the bearings of the input supports. If you know velocity n1, the loads applied and the application point, the duration in hours can be obtained.

1-4 power

Pt= thermal power: maximum mechanical power that the gearbox can transmit while operating continuously, with splash lubrication, without exceeding the thermal limit (oil temperature not greater than 90°C).Greater power can be transmitted by using an appropriate cooling system. The value refers to a continual operation with mechanical efficiency of 0,98 for each reduction stage input velocity of 1500 rpm, ambient temperature of20°C, altitude 0/500 m, application to the cover. For different conditions, the thermal power value must be multiplied by the thermal factors. For limited operating periods, followed by rest periods that are sufficiently long to guarantee an adequate cooling of the gearbox, the thermal power obeisance and can be disregarded.