How to install the eccentric ball bearings correctly?

The overall eccentric ball bearings  installation of the overall eccentric bearing installation is good or bad, will affect the accuracy, life and performance of the overall eccentric ball bearings. Therefore, please fully study the installation of the overall eccentric ball bearings, that is, install the entire eccentric bearing in accordance with the operating standards including the following items.

1. Clean the whole eccentric bearing and related parts. (For the whole eccentric ball bearings that has been greased and the oil seal or dust cover on both sides, the whole eccentric bearing of the seal ring does not need to be cleaned before installation.)

2. Check the size and finishing of related parts

3. Installation method The installation of the whole eccentric ball bearings should be based on the overall eccentric bearing structure, size and overall eccentric bearing components. The pressure should be directly applied to the end face of the tight ferrule. The pressure should not be transmitted through the rolling element. Eccentric bearing installation generally uses the following methods:

(1) Press-fit with the inner eccentric ball bearings of the integral eccentric bearing and the shaft to make a tight fit. When the outer ring and the overall eccentric ball bearings seat hole are loosely fitted, the whole eccentric bearing can be press-fitted on the shaft by a press, and then the shaft is integrated with the whole The eccentric bearing is inserted into the hole of the whole eccentric ball bearings seat, and the assembly sleeve (copper or mild steel) made of soft metal material is placed on the inner ring end surface of the whole eccentric bearing during press fitting. The inner diameter of the fitting sleeve should be slightly larger than the diameter of the journal, and the outer diameter should be slightly smaller than the inner rib of the integral eccentric bearing to avoid pressing on the cage. The outer ring of the whole eccentric bearing is tightly matched with the hole of the overall eccentric bearing seat. When the inner ring and the shaft are loosely fitted, the integral eccentric bearing can be first pressed into the hole of the overall eccentric bearing seat, and the outer diameter of the assembled sleeve should be slightly smaller than the seat. The diameter of the hole. If the overall eccentric bearing ring is tightly fitted with the shaft and the seat hole, the installation of the inner ring and the outer ring should be simultaneously pressed into the shaft and the seat hole. The structure of the assembly sleeve should be able to simultaneously tighten the inner and outer rings of the overall eccentric bearing. End face.

(2) Heating and fitting The heating method is used to convert the tight fit into a loose fit by heating the integral eccentric bearing or the integral eccentric ball bearings seat. It is a common and labor-saving installation method. This method is suitable for the installation of the whole eccentric bearing with large interference.

(3) Installation of conical hole integral eccentric ball bearings The conical hole integral eccentric bearing can be directly mounted on the tapered journal or the tapered surface of the adapter sleeve and the withdrawal sleeve. The tightness of the fit can be used for the overall eccentric bearing diameter. It is measured by the amount of clearance reduction. Therefore, the radial clearance of the whole eccentric ball bearings should be measured before installation. During the installation process, the clearance should be measured frequently to achieve the required clearance reduction. The lock nut is generally used during installation. Installation, heating can also be used.

(4) Installation thrust of thrust integral eccentric ball bearings The circumference of the integral eccentric bearing and the shaft are generally coordinated. The fit of the race to the overall eccentric bearing seat is generally clearance fit. Therefore, the overall eccentric bearing is easier to install, two-way. The central shaft spring of the thrust integral eccentric ball bearings shall be fixed on the shaft to prevent rotation relative to the shaft. The installation method of the whole eccentric bearing is generally the case of shaft rotation. Therefore, the cooperation between the inner ring and the shaft is a win-win cooperation, and the cooperation of the outer eccentric ball bearings outer ring and the overall eccentric bearing chamber is a clearance fit.

ZYSL company specializes in eccentric ball bearings for many years. All raw materials and accessories have been carefully selected to ensure a good user experience.

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