Single Row Angular Contact Ball Bearing

★ Product Features
The single row angular contact ball bearing consists of an outer ring, an inner ring, a row of steel balls, and a cage. This type of bearing can withstand both radial and axial loads, as well as pure axial loads and can operate at higher speeds. Single row angular contact ball bearings can only withstand axial loads in one direction. When subjected to radial loads, additional axial forces are induced and only axial displacement of the shaft and housing in one direction can be limited. Although this type of bearing can only withstand one-way axial loads, it can be combined with another bearing that is subjected to reverse loads. If the pairs are assembled in combination, the outer end faces of the pair of bearings are opposite to each other, the wide end faces are opposite to the wide end faces (back-to-back DB), and the narrow end faces are opposite to the narrow end faces (face-to-face DF), so as to avoid causing additional axial force, and The shaft or housing can be limited to axial play in both directions.
The single-row angular contact ball bearing has more ball loading than the same size deep groove ball bearing, so the rated load is the largest in the ball bearing, the rigidity is also strong, and the operation is stable. The inner and outer rings can be used to adjust the radial clearance by mutual displacement, and several sets of bearings can be connected in parallel to cause pre-interference and improve the rigidity of the system. The use of angular contact ball bearings cannot be split, and its self-aligning ability is very limited.
The characteristics of this type of bearing are that the contact angle is not zero. The standard contact angle of single row angular contact ball bearings is 15°, 25°, 30°, 40°. The size of the contact angle determines the amount of radial and axial forces that the bearing can withstand. The greater the contact angle, the greater the axial load capacity. However, the smaller the contact angle, the better the high speed rotation.
Single row angular contact ball bearings do not have any play. Only the angular contact ball bearings after assembly have internal clearance. According to the working conditions, the assembled bearings are divided into two types: preload (preloading load) and preload (preset clearance). The internal clearance of the preloaded angular contact ball bearing is 0 or negative. Commonly used on machine tool spindles to improve spindle stiffness and rotation accuracy. Paired angular contact ball bearings are factory adjusted for clearance (preload) without user adjustment. The main width tolerances and end face projections of ordinary single-row angular contact ball bearings are only produced at ordinary grades and cannot be combined and matched at will.
We also produces universal combination angular contact ball bearings that can be assembled in any way, back-to-back, face-to-face or series. The universal assembly bearing is divided into preload (preloading load) and preload (preset clearance). In addition to the universal assembly of bearings, the individual bearings in other assembled bearings are not interchangeable.
This type of bearing is often used in applications with high speed, high precision and low axial load. For example, aircraft engine spindles, machine tool spindles and other high-speed precision mechanical spindles. Also used in high frequency motors, gas turbines, oil pumps, air compressors, printing machinery, etc. It is the most widely used type of bearing in the machinery industry.
★ Product Categories
The angular contact ball bearings produced by us can be roughly divided into four types:
Single row angular contact ball bearing
7000C, 7000AC, 7000A, 7000B
Combination angular contact ball bearing
Face to face (DB), back to back (DF), tandem (DT), triple
Double row angular contact ball bearing
Double raceway inner ring combined with two single raceway outer rings
Double raceway outer ring combined with two single race inner rings
Double raceway outer ring combined with double race inner ring
Four point contact ball bearing
QJ0000, QJF0000
Single row angular contact ball bearings and assembled angular contact ball bearings
In order to improve the rigidity and load carrying capacity of angular contact ball bearings, angular contact ball bearings of the same specification are often double (DB, DF, DT), triple (TBT, TFT, TT), quadruple (QBC, QFC, QT) and even Wulian (PBC, PFC, PT, PBT, PFT) and other methods. For double-joint angular contact ball bearings, the assembly method is divided into back-to-back (DB), face-to-face (DF), and series (DT). Back-to-back assembled angular contact ball bearings are suitable for withstanding individual or combined radial and axial loads and can withstand bidirectional axial loads. Can withstand large overturning moments and have strong stiffness. Different preloads can be applied depending on the operating conditions. Face-to-face angular contact ball bearings are less subject to overturning moments and provide lower system stiffness. The advantage is that it is less sensitive to the coaxiality error of the bearing housing. Angular contact ball bearings in series are only allowed to withstand large axial loads in one direction. In most cases, a spring is required to apply the preload. The amount of radial load that can be withstand and the stiffness of the bearing depend on the selected preload value.
The assembled bearings are divided into two types: preload (preload) and preload (preset clearance).
Preload: GA - light preload
GB - medium preload
GC - heavy preload
Pre-gap: CA - smaller axial clearance
CB - medium axial clearance
CC - large axial clearance