Axial machine tool spindle bearings installed proper positioning

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Bearing short-lived or premature loss of accuracy, to a large extent due to not strictly in accordance with the requirements of the machine tool spindle bearings installed. In order to ensure the long life of the bearings installed, we should pay attention to common problems. angular contact bearing
Must be cleaned before installing bearings, bearings in the factory, in order to protect the raceway and the rolling surface is not rust, anti-rust oil or rust grease is injected between the raceways and rolling elements. Therefore, it is necessary to use clean gasoline and kerosene, cleaning, and then coated with a clean, high-quality or high-speed high-temperature lubricant can be used. However, some fully enclosed bearings and coated lubrication the antirust dual-purpose grease machine tool spindle bearings do not need to be cleaned. The cleanliness of the bearing life and vibration noise is very large.
Transition gasket (1) special bearing positioning: In some special cases, the shaft shoulder and fillet size can not be determined by this catalog listed mounting dimensions as the axial support.
(2) bearing spring sta lls circle positioning: by the axial load bearing, speed is not high, the journal axis both shorter and processed into thread can be cross-section rectangular elastic stalls circle positioning. This method is very convenient loading and unloading, the position occupied and simple manufacturing.
(3) bearing thrust washer positioning: journal shorter journalled processed into threaded difficulties, the higher the rotational speed of the spindle bearings, the case of the larger of the axial load may be washers positioned, i.e. with a washer on the shaft. The end face of more than two screws positioned with stopper washer or wire screw dead to prevent loosening.
(4) bearing adapter sleeve positioning: not high speed bearings to withstand steady radial load and axial load not self-aligning roller bearings, tapered on the optical axis by means of an adapter sleeve. Apply tight set of nuts and washers with positioning. The nut lock tight sleeves friction bearing positio ning. thrust bearings
To select the correct grease. Grease from the base oil, thickener and additives made of different types and different grades of the same kind of grease performance difference is large, the rotation limit allowed, while the performance of the grease is also determined from the base oil, a thickener also relates to the lubricating properties, the water resistance of the the water resistance decision grease thickeners. Usually a low viscosity base oil suitable for low temperature, high speed; high viscosity suitable for high temperature, high load. Different brands of the grease can not be mixed, Moreover, even if the same kind of grease thickener, also with each other because of different additives adversely affect.
In the bearing mounting the inner ring, typically by the shaft shoulder on one side is fixed in the bearing mounting the bearing inner ring, typically by the sha ft shoulder in the side of the fixed bearing position, while the other side with a nut, the stopper washer or spring retaining ring fixed. Shaft shoulder and the axial fixed parts and the bearing inner ring contact part size, according to the form of bearing size listed in the installation of various types of bearings size is determined. thin bearing
The position of the bearing, while the other side with a nut, washer or spring profile ring fixed stopper. Shaft shoulder and the axial fixed parts and the bearing inner ring contact part size, according to the form of bearing size listed in the installation of various types of bearings size is determined.