Gear Oil VS. Hydraulic Oil: Why You Should Never Use Them Interchangeably

Created on 09.03

A common misconception in industrial maintenance is that gear oils and hydraulic oils are interchangeable. This mistake can cause severe equipment damage. Understanding their different roles is crucial.

Hydraulic Oil is designed to transfer power efficiently in a closed system. Its primary functions are power transmission, lubrication, and heat transfer. It has a lower viscosity and contains anti-wear and anti-foam additives.

Gear Oil, however, is formulated to protect robust gear sets under extreme pressure (EP). Its main job is to prevent metal surface welding and pitting under high-load conditions. It has a higher viscosity and contains strong EP additives like sulfur-phosphorus.

Using hydraulic oil in a gearbox can lead to insufficient protection and accelerated wear. Using gear oil in a hydraulic system can cause overheating and pump failure. Always use the oil specified for the application. Consult fujian keen youlu lubricant Co.Ltd. for expert advice on selecting the perfect lubricant for your needs.

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