The main shaft bearing oil is a special lubricating oil for the main shaft bearing of precision machine tools and similar equipment. It plays a very important role in ensuring the working accuracy and service performance of the main shaft and prolonging its service life, also known as bearing oil.
 
 
 
 
 
Its main performance:
 
 
 
1. Proper viscosity and good viscosity temperature characteristics
 
 
 
In order to keep the temperature of the main shaft of the machine tool from being too high, which may cause the machine tool to undergo thermal deformation, affect the machining accuracy or cause the bearing to be poorly lubricated, the lubricating oil with proper temperature shall be selected according to the structure, rotation speed and bearing clearance of the main shaft bearing and shall have good viscosity temperature characteristics, so as to prevent the lubricating performance from being affected due to the excessive change of the viscosity when the working temperature of the main shaft and the ambient temperature change greatly.
 
 
 
 
 
2. Good lubricity
 
 
 
In order to maintain a uniform oil film between the contact surface of the main shaft and the bearing, and the oil film will not be damaged when the main shaft starts or stops moving, maintaining good lubrication performance plays a role in reducing friction and friction heat, reducing the temperature rise of the main shaft, and ensuring the processing accuracy, and requires good lubrication performance.
 
 
 
 
 
3. Good oxidation resistance
 
 
 
When the machine tool spindle adopts the circulating lubrication mode, the spindle bearing oil is required to be used for a long time without deterioration, so it is required to have good oxidation resistance.
 
 
 
 
 
4. Good rust resistance
 
 
 
Because the oil will inevitably mix with condensed water or machine coolant in the air during the working process of the spindle lubrication system, the oil is required to have good rust resistance.