As a key component in the field of machine tools, lathe spindle bearings must refer to multiple factors in their selection specifications. The following four elements must be considered in the selection of the spindle bearing of the lathe.
1. Speed ratio and heating
With the development trend of science and technology, the speed ratio of the spindle bearing of the lathe is getting higher and higher, and the range of speed regulation is getting larger and larger. Therefore, the demand for the high-speed operation reliability of the bearing is also becoming higher and higher. The temperature rise of the spindle bearing of the lathe is the main element that limits the bearing speed ratio. Under normal circumstances, proper selection of bearing type, tolerance level, equipment method, backlash (preload) size, lubricating fluid and lubrication method, etc. can improve the rapid characteristics of the flip bearing to a certain level.
2. Service life and bearing capacity
For general machine tools, the key to the service life of the spindle component is the period of its use to maintain the accuracy of the spindle. Therefore, the accuracy maintenance characteristics of the bearing are required to meet the requirements of the service life of the spindle component. For super-heavy-duty machine tools or super-powerful drilling machines, the bearing capacity should be considered first.
3. Bending stiffness and vibration resistance
In order to ensure the production quality of the machine tool, the spindle system software must have sufficient rigidity, otherwise there will be a large re-imaging deviation and even chattering. Vibration resistance tests the ability to resist external force vibration and self-excited vibration. The vibration resistance of the main shaft components lies in the strength and damping of the main shaft and bearings. The selection of torque flip bearings can reasonably improve the bending stiffness of the spindle system software.
4. Noise
In the fast numerical control grinder, the noise of the grinding head bearing is the main component of the noise of the whole machine, and low-noise rolling bearings should be used.
XRL Bearings has more than 30 years of industry experience in lathe spindle bearings and is a professional manufacturer of precision ball bearings. With excellent product development capabilities and strict quality control, we continue to expand the product line and application range.
Post time: Sep-03-2021