Installation Procedure of Integral Eccentric Bearing

Time：2021.06.03  Source：Roller Bearings Suppliers

The overall eccentric bearing is also known as eccentric bearing, refers to is a very useful bearing type, this bearing mainly includes outer ring, inner ring, rolling body flower basket, rolling body, eccentric bearing simple structure, easy to use, do not need an eccentric shaft can achieve eccentric function, reduce the manufacturing cost of the eccentric mechanism.

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

1.Clean the overall eccentric bearing and related parts, (for the overall eccentric bearing and the oil seal or dust cover on both sides of the grease lubrication, the sealing ring overall eccentric bearing without cleaning before installation.)Need WSBC 22217 E, Click here to learn more.

2. Check the size and finishing of relevant parts.

3. Installation method: The installation of the overall eccentric bearing should be based on the overall eccentric bearing structure, size, and the matching nature of the overall eccentric bearing parts, the pressure should be directly added to the end face of the tight matching ring, and the pressure should not be transmitted through the rolling body. The installation of the overall eccentric bearing generally adopts the following methods:

(1) the overall force-fit eccentric bearing inner ring and shaft tight fit, outer ring and the overall eccentric bearing hole is a loose fit, available press the eccentric bearing to be pressed on the shaft of the whole, then the shaft together with the whole eccentric bearing into the overall eccentric bearing hole, when pressed on the whole eccentric bearing inner ring end face, Pad an assembly sleeve made of soft metal material (copper or mild steel). The inner diameter of the assembly sleeve should be slightly larger than the journal diameter, and the outer diameter should be slightly smaller than the inner ring of the overall eccentric bearing to avoid pressing on the retainer.

When the outer ring of the overall eccentric bearing and the overall eccentric bearing seat hole is tightly matched, the inner ring and the shaft are looser, the overall eccentric bearing can be pressed into the overall eccentric bearing seat hole first, at this time, the outer diameter of the assembly sleeve should be slightly less than the diameter of the seat hole. If the overall eccentric bearing ring and shaft and seat hole are tightly matched, the inner ring and outer ring should be pressed into the shaft and seat hole at the same time, and the structure of the assembly sleeve should be able to tighten the end face of the inner ring and outer ring of the overall eccentric bearing at the same time.

(2) heating fit by heating the whole eccentric bearing or the whole eccentric bearing seat, the use of thermal expansion will be a tight fit into loose fit installation method. It is a common and labor-saving installation method. This method is suitable for interference quantity larger overall installation of the eccentric bearing, the whole eccentric bearing or separable before hot charging type uniform heating in the eccentric bearing ring into the fuel tank of the whole 80-100 ℃, and then loaded on the shaft, as soon as possible out of the oil to prevent inner ring after cooling end face and the shoulder joint is not tight, the eccentric bearing axial fastening again after cooling. When the outer ring of the integral eccentric bearing is tightly matched with the integral eccentric bearing seat made of light metal, the hot charging method of heating the integral eccentric bearing seat is adopted to avoid the scratch on the matching surface. Tank heating whole eccentric bearing, due at a certain distance from the bottom of a mesh, or hanging hooks in the whole eccentric bearing, the eccentric bearing cannot be on the bottom, to prevent impurities into the whole eccentric bearings or uneven heating, the fuel tank must have a thermometer, strictly control the oil temperature shall not exceed 100 ℃, in order to prevent the tempering effect occurs, The hardness of the ring is reduced.

(3) Installation of integral eccentric bearing with a tapered hole The integral eccentric bearing with tapered hole can be installed directly on the journal with taper, or loaded on the tapered surface of the set sleeve and the release sleeve. The tightness of the fit can be measured by the decrease of the radial clearance of the integral eccentric bearing.

Therefore, the radial clearance of the integral eccentric bearing should be measured before installation. During the installation process, clearance should be measured frequently to achieve the required clearance reduction. The locknut is generally used for installation, and heating installation can also be used.

(4) The installation of the overall thrust eccentric bearing thrust whole week of eccentric bearing and shaft with the general for transition fit, seat and the overall eccentric bearing holes with the general for the clearance fit, so the whole eccentric bearing is easy to install, two-way thrust whole eccentric bearing axial spring should be fixed on the shaft, in order to prevent the relative to the axis of rotation.

The installation method of the overall eccentric bearing is generally the case of shaft rotation, so the match between the inner ring and the shaft is the over-winning match, and the match between the outer ring of the overall eccentric bearing and the overall eccentric bearing chamber is the clearance match. Click here to learn more about WSBC 22224 E.

4. Check the overall eccentric bearing after installation

5. the addition of lubricant

Overall eccentric bearing operation inspection After the installation of the overall eccentric bearing is finished, the operation inspection should be carried out immediately to determine whether the installation is normal.

The rolling integral eccentric bearing is a precision part, so it requires a corresponding cautious attitude when using. Even if the high-performance integral eccentric bearing is used, it can not achieve the expected performance effect if it is not used properly.

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