Why Should The Speed Reducer Be Equipped With A Cooling Fan?

We often see the installation of a cooling fan on the high-speed shaft of the geared motor. As we all know, the installation of a cooling fan is to enhance the cooling of the temperature of the geared motor.


Thermal power refers to the actual power that does not exceed a certain calculated oil temperature during continuous operation of the gearbox. The heat treatment method of the gearbox is generally carburizing and quenching. When selecting a hard-tooth surface reducer, an important parameter is the thermal power. The thermal power of the reducer is closely related to its heat dissipation. To increase the thermal power, the heating problem in the box should be solved first. When the reducer is running due to excessive heat (heating and heat dissipation process), due to meshing loss, bearing loss, oil stirring loss, and sealing loss, a large amount of heat is generated, which causes the temperature of the reducer to rise due to excessive power loss, which limits the system The normal performance of the function has a great impact on the reducer system. To give full play to the performance of the reducer, a key factor is to increase the thermal power. The increase in the thermal power of the reducer is mainly through the cooling of the reducer system, increasing its heat dissipation and lubricating oil circulation, usually, the increase of the reducer Additional cooling mainly includes: cooling fan, cooling coil, and forced lubrication system.

shaft mount reducers

Three heat transfer methods: heat conduction, convection and radiation


1.Heat conduction: 

If there is a temperature difference in a continuous medium, or two objects with different temperatures are in direct contact, the heat transfer phenomenon that occurs when there is no visible macroscopic material flow in the object is more conductive.


2.Convection: 

The heat transfer that occurs when there is a fluid and there is a macroscopic movement of the fluid is called convection.


3.Radiation: 

Objects emit thermal radiation energy when heated, high-temperature objects lose heat and low-temperature objects get heat. This method is called radiant heat transfer.


Heat transfer method of reducer


1.Heat conduction:

 conduct heat transfer between the base of the reducer and the foundation, exchange heat, and reduce the temperature of the reducer.


2.Radiation: 

The high-temperature gear box body transfers heat through the radiation on the outer surface, and transfers the heat to the air, and the air takes away the heat through the flow.


The role of the cooling fan in the reducer


The fan generates wind flow through the high-speed shaft rotation of the reducer. Through the structural design of the fan cover, the wind flow is blown to the outer surface of the reducer as much as possible to accelerate the air flow on the outer surface of the box, accelerate the radiation heat transfer, and accelerate the heat exchange. Remove the heat and reduce the temperature of the reducer.

CAMEL is a professional supplier,distributor and manufacturer of speed reducers and related accesories. including gear reducers, rotary reducer, worm gearbox, servo-gearbox, planetary gearboxes, planetary gear reducer helical gear reducers, planetary gearbox, right angle gear reducer, gear reduction, gear motors, electrical motors, DC motors, DC gear motor, dc gearedmotors, AC gear motor, AC motors, servo motors, ac servo motor, dc servo motor, servomotor, bearings, gears, spur gear, helical gear, bevel gear, worm gear, planetary gear, couplings, oil seals, belts, chains, etc. If you have any need, please feel free to contact CAMEL:

sales@china-speed-reducer.com

https://www.china-speed-reducer.com

https://www.gear-reducer-worm.com

https://www.gear-worm-reducer.com

https://www.gears-speed-reducers.com

https://www.gearsreducers.com


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