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Quick overview of spherical roller bearings

wallpapers News 2021-08-31
What is Spherical roller bearing
Spherical roller bearings are bearings with drum-shaped rollers assembled between the inner ring with two raceways and the outer ring with spherical raceways. Spherical roller bearings have two rows of rollers, which mainly bear radial load, and can also bear a moderate amount of axial load in any direction; they have a high radial load capacity, especially suitable for radial heavy loads or vibration loads Work, but cannot bear pure axial load.
Spherical roller bearing features:
1. Similar to self-aligning ball bearings, the outer ring raceway of a spherical roller bearing is a part of the spherical surface, and its curvature center is on the bearing axis. The outer ring raceway of this type of bearing is spherical, so its self-aligning performance is good. It can compensate the coaxiality error, so it can realize automatic centering.
2. In the section perpendicular to the rolling direction, the generatrix of the roller is a curve, which can be in good agreement with the inner and outer raceways. The roller and the raceway are in line contact and can bear radial load and axial load. Impact resistance.
3. The rollers of the spherical roller bearing have a high degree of agreement with the raceway, and they are all curved generatrixes, so the relative sliding is serious, and the friction is greater than that of the cylindrical roller bearing, so the allowable working speed of the spherical roller bearing is higher. Low.
4. Ordinary core roller bearings have asymmetrical rollers, which will produce an axial component force during operation. The rollers are in contact with the central fixed rib due to this component force. The adjustment of the symmetrical rollers The core roller bearing adopts a movable intermediate retaining ring that can move in the axial direction, so that the roller is no longer constrained by the central retaining edge, and the undercut groove of the inner ring raceway is omitted, and longer rollers can be used , Thereby improving the bearing capacity of the bearing.
(5) The contact angle of single-row spherical roller bearings is zero. There is no significant change in the contact angle under the axial load. A small axial load will produce a large contact force between the roller and the raceway. Therefore, when the axial load is relatively greater than the radial load, the single-row spherical roller Sub-bearings cannot bear combined radial and axial loads.
(6) Similar to the self-aligning ball bearing, the double-row spherical roller bearing with adapter sleeve can be installed at any position of the optical axis without machining the positioning shoulder.
Spherical roller bearings application fields
Papermaking machinery, reduction gears, railway vehicle axles, rolling mill gearbox bearing seats, rolling mill rolls, crushers, vibrating screens, printing machinery, woodworking machinery, various industrial reducers, vertical self-aligning bearings with seat.
Spherical roller bearing assembly method
1. Electric heating plate heating method
Place the bearing on an electric heating plate with a temperature of 100°C for a few minutes. This method is the most convenient. For example, it can be turned over several times to make the bearing evenly heated, and the efficiency is high. This method can be used for large and small spherical roller bearings.
2. Electric furnace heating method
The bearing is heated in a closed automatic temperature control electric furnace, heating is uniform, temperature control is accurate, and heating is fast, which is suitable for heating many bearings in a batch.
3. Induction heating method
The induction heater can quickly, reliably and cleanly heat the spherical roller bearing to the required temperature. This is especially suitable for the occasions where the inner ring is tightly fitted. Since only the inner ring is heated, the outer ring is rarely heated. This can be easier to install on the shaft, but also easy to install in the seat hole.
4. Electric bulb heating method
Using a 50W electric bulb to heat the spherical roller bearing can ensure that the heating temperature is around 100°C. The smaller bearing can be placed directly on the bulb, and the larger bearing can be placed in the conical cover of the bulb.
5. Oil tank heating method
This is a widely used traditional heating method to install the spherical roller bearings. A metal mesh is set at a distance of 50 to 70 mm from the bottom of the oil groove.
Spherical roller bearings supplier
Wuxi Spark Bearing Co., Ltd is a modern high-tech professional high-quality roller bearing manufacturer integrating R&D, manufacturing, sales, and service. Our bearings are mainly supplied to OEM customers in many industries, such as mining, petroleum, chemical, coal, cement, heavy machinery, wind power, construction machinery, and other industries. We have a complete supply chain and can provide customers with almost a full range of standard and non-standard customized bearings. Welcome to send an email or click on the product to send an inquiry for the latest price of related bearings.

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