Machine tool spindle bearings selection criteria and performance requirements of bearing oil
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Machine tool spindle bearings selection criteria and performance requirements of bearing oil

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Company: WuXi JOBST BEARING CO.,LTD Located in WuXi, China, JOBST Bearings is a leading bearing manufacturer that only offers the latest, state of the art ball bearings and roller bearings around the world. From miniature bearings to huge heavy industry bearings, we're committed to providing our customers with only the best.


Key Words: China Bearing; Cheap Bearings; 6203 Bearing


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Selection criteria spindle bearings

Speed ​​and temperature

With the development of science and technology, more and more high-speed spindle bearings, speed range growing, therefore, bearing high speed stability requirements are also getting higher and higher. Spindle bearing temperature is an important factor limiting the speed of the bearing. Under normal circumstances, the correct choice of bearing type, tolerance level, allocation, clearance (preload) size, lubricants and lubrication methods, can improve the performance of high-speed rolling bearings to a certain extent.



Life and carrying capacity

General machine tools, the life of the spindle assembly mainly refers to its precision spindle holding period of use and therefore requires precision bearing spindle assembly retaining performance to meet the requirements of life. For heavy-duty machine tools or heavy cutting machine tools, should first consider the carrying capacity of the bearing.

Rigidity and vibration resistance

To ensure the quality of the processing machine, the spindle must be sufficiently rigid system, otherwise it will have a greater complex bearing manufacturer mapping error even flutter. Vibration resistance refers China bearing to the ability to resist forced vibration and self-excited vibrations by. Vibration of the spindle assembly depends on the stiffness and damping of the spindle and bearing. Rolling adopts preload can effectively increase the stiffness of the spindle system.


In the high-speed grinder, grinding machine noise bearing noise is the main ingredient should be used in low-noise rolling bearings.


Performance requirements of machine tool spindle bearing oil

Spindle bearing oil is a precision machine tool spindle bearings and similar special lubricants, and use it to ensure the accuracy bearing manufacturers of the work spindle performance and prolong its service life bearings manufacturer play a very important role, also known as bearing oil. The main performance requirements include:

Suitable viscosity and good viscosity-temperature characteristics

For the machine tool spindle bearing wholesalers  temperature will not be too high and the machine thermal variations, or to affect the machining accuracy poor bearing lubrication, it should be based on the structure of the spindle bearings, speed and bearing clearance and other selected appropriate temperature and oil required to have a good viscosity-temperature characteristics, and prevent the spindle temperature and ambient temperature change is large, the change in viscosity is too large to affect its lubricating properties.

Good lubrication

To make the contact surface between the shaft and the bearing to maintain a uniform film, and when the spindle start or stop motion film to produce an impact load is not caused by sabotage, to maintain good lubricating bearings China  properties to reduce friction and friction plays a hot, reduce the spindle temperature, guarantee the role of precision, requires a good lubricating properties.

Good oxidation resistance

Spindle when the cyclical lubrication, spindle bearing oil requires long-term use without deterioration so requires a good oxidation resistance.

Good rust resistance

Since the spindle oil lubrication system work process will inevitably mixed with the air condensing water or machine coolant, thus requiring oil has good corrosion resistance.

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