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What is spherical roller thrust bearing?

wallpapers News 2021-10-28
What is spherical roller thrust bearing?
Spherical roller thrust bearing is a rolling-element bearing of thrust type that permits rotation with low friction, and permits angular misalignment. The bearing is designed to take radial loads, and heavy axial loads in one direction. Typically these bearings support a rotating shaft in the bore of the shaft washer that may be misaligned in respect to the housing washer. The misalignment is possible due to the spherical internal shape of the housing washer.
Spherical roller thrust bearing Features
Unlike other thrust bearings in the catalog, this type of bearing has a very large axial load capacity. It can also bear several radial loads while bearing axial loads, but the radial load must not exceed 55% of the axial load. As long as the loads P and P0 do not exceed 0.05C0, and the shaft ring rotates, the bearing allows the alignment angle listed in the following table.
Bearing diameter series aligning angle 200 series 1°~1.5° 300 series 1.5°~2° 400 series 2°~3° Small values are suitable for larger bearings, and allowable when the load increases The centering angle will decrease. Oil lubrication is generally used when in use. Thrust tapered roller bearings can only bear the one-way axial load and can limit the one-way axial displacement of the bearing, so it can be used for one-way axial positioning. Compared with thrust cylindrical roller bearings, the bearing capacity is large, the relative sliding is small, but the limit speed is lower.
Spherical roller thrust bearing performance characteristics 
1. The outer ring of the spherical roller thrust bearing and the housing hole of the bearing seat should not adopt an interference fit, and the inner ring and the journal should not be too tight. It is required that the nut should be used for adjustment during installation to make it more flexible. Axial displacement. Because if the spherical roller bearing adopts interference fit, it is easy to change the contact angle of the bearing, resulting in uneven bearing load distribution and high-temperature rise. Therefore, it is best to fit the inner and outer rings of this type of bearing with the shaft journal and the housing hole of the bearing housing. Generally, it is best to just push the bearing into the journal and housing hole with the thumbs of both hands.
2. For the installation axial clearance of the spherical roller bearing, it can be adjusted by the adjusting nut on the journal, the adjusting washer and the thread in the bearing seat hole, or the pre-tensioned spring. The size of the axial clearance is related to the arrangement of the bearings during installation, the distance between the bearings, and the material of the shaft and the bearing seat, and can be determined according to the working conditions. For high-load and high-speed spherical roller bearings, when adjusting the clearance, the effect of temperature rise on the axial clearance must be considered, and the reduction in clearance caused by the temperature rise must be estimated, that is, the axial clearance The gap should be appropriately adjusted to be larger. For low-speed and vibration-bearing bearings, clearance-free installation or pre-load installation should be adopted. Its purpose is to make the roller and raceway of the spherical roller bearing have good contact, and the load is evenly distributed, and to prevent the roller and raceway from being damaged by vibration and impact. After adjustment, the size of the axial clearance is checked with a dial indicator. The method is to first fix the dial indicator on the body or the bearing seat, make the dial indicator contact against the smooth surface of the shaft, push the shaft left and right along the axis, the maximum swing of the needle is the axial clearance value.
Supplier of Spherical thrust roller bearings
Wuxi Spark Bearing Co., Ltd (Aka Spark Bearings) is the complete, one-stop Spherical thrust roller bearings supplier & manufacturer. All products are qualified and have passed the ISO 9001 qualification. Here are some popular types of Spherical thrust roller bearings: 29412E, 29326 M, 29328 E. Feel free to get a quote from us by filling the contact form below.

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