How to Install a Sealed Spindle Ball Bearing

Among the many types of spindle ball bearings available today, sealed spindle ball bearings have the highest service life. They feature optimized "for-life" lubrication and non-contact sealing disks. These bearings are available in different sizes, including standard "S" and "SM" versions, as well as in the "619..." series. These bearings are used as universal standard spindles. Ball bearings with "S" design have large ball diameters, making them suitable for high-speed applications.

Among other types of spindle bearings, sealed spindle ball bearings can withstand thrust applied in either direction. However, the opposite is true if the thrust is applied from the front of the bearing. To avoid a situation where a bearing separates, it is important to check the cross-section of the bearing. The bearing's cross-section will reveal any flaws in the design and performance. If it is installed backwards, it will not work satisfactorily and is likely to get damaged.

To install the bearing, clean it. Lightly grease it. Apply grease to the bearing's outer ring and over the balls. Make sure the outer ring does not touch the inner bearing race. You should then apply a light press-fit before tightening it. After that, you can apply an accurate preload. The preload should be less than the outer bearing race, which will extend the life of the bearing.

A sealed spindle ball bearing will require modifications. These bearings are 1.5mm deeper than the stock bearing. They cannot spin as fast as ball bearings, because they are not sealed. A seal is needed to keep grease inside. For high-speed use, sealed spindle ball bearings are ideal. If you need to make repairs to your spindle bearing, it is recommended to install a sealed spindle ball bearing.

When buying a sealed spindle ball bearing, look for two things. First, the seal should be in good shape. If the seal is loose, it can cause excessive wear. Another factor to consider is the grease. If the bearing is not properly lubricated, the oil will leak out and damage the bearing. In fact, in seven years, the dust in the paper industry will dry out the grease inside and cause the bearing to break down completely.