Oil Cooler


Cause of Heat Generation in the Hydraulic Elevator

∙ Pressure loss occurs by internal friction, viscous resistance,

  and leakage in the hydraulic pump.

∙ Pressure drops in the control system and pipeline.

∙ Pressure loss in pressure relief and pressure reducer.

∙ Hydraulic oil temperature rises by damaging or loss of the motor.


Temperature Effects on the Elevator

∙ Elevating temperature means increasing viscosity of oil. Viscosity increases then control valve does not work correctly.

∙ Increase of oil temperature affects adversely to the hydraulic motor.

∙ Oil change period is shorten due to lower viscosity of the hydraulic oil.

Reason of Using Oil Cooler

∙ Recommend that installing oil cooler is to protect the equipment and maintain renewal of hydraulic oil and comfortable ride.​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​

Capacity, Dimensions, and Operating Methods

Donam's oil cooler is...


∙ Excellent cooling effect.

∙ Simple way to automate the work.

Digital temperature controller.

- operates at set value(factory set 45℃).

- stops at set value(factory set 30℃).

∙ Simple appearance, graceful, and easy to assemble 

  electrical and plumbing connections.