China Suppliers Angular Contact Ball Bearings Factory for Combined Radial and Axial Load Applications
Angular Contact Ball Bearings Produced Include
Single-row angular contact ball bearings
Double-row angular contact ball bearings
Four-point contact ball bearings
Structural Features of Single-Row Angular Contact Ball Bearings
Single-row angular contact ball bearings can only withstand axial loads acting in one direction. Under radial loads, an axial force is generated within the bearing, which must be counteracted by an opposing force. Therefore, these bearings typically require a second bearing for balance. Single-row angular contact ball bearings can accommodate more balls, providing higher load-carrying capacity.
Contact Angles Are Available in Three Variants
Single-row angular contact ball bearings are classified into non-separable and separable types. Non-separable bearings are further divided into standard, high-speed, and ultra-high-speed series for different applications. Separable bearings (inner and outer rings can be installed separately) are used in components with limited installation space, such as magnetos, and are also referred to as magneto bearings.
Cages for Non-Separable Bearings
Standard cage: Fiber-reinforced phenolic resin cage, guided by the inner ring (no suffix code).
Alternative cages (specified with suffix codes):
Cages for Separable Bearings (Magneto Bearings)
Bearings with glass fiber-reinforced nylon 66 molded cages are suitable for most applications and can operate normally within a temperature range of -30°C to +120°C.
Four-Point Contact Ball Bearings
Four-point contact ball bearings are a type of single-row angular contact ball bearing with raceways designed to accommodate bidirectional axial loads. These bearings require less axial space compared to double-row bearings. The four-point contact ball bearings listed in the table below have a contact angle of 35°. The inner ring is split into two halves, allowing for a larger number of balls and thus higher load capacity. The bearings are separable, meaning the two halves of the inner ring and the outer ring with the ball and cage assembly can be installed separately.
Double-Row Angular Contact Ball Bearings
Double-row angular contact ball bearings are designed similarly to two single-row angular contact ball bearings arranged back-to-back. However, their width is slightly less than two single-row bearings, and the contact angle is 30°. These bearings offer high rigidity, can withstand tilting moments, and are non-separable. Available design types include:
1. With a filling slot on one side: This design allows for larger and more balls, enabling higher radial and unidirectional axial load capacity. Typically uses stamped steel or machined brass solid cages. Suitable for low-speed applications.
2. Without a filling slot: This design can accommodate bidirectional axial loads of equal magnitude. Uses glass fiber-reinforced nylon 66 cages or stamped steel crown cages, resulting in minimal heat generation and lower operating temperatures. This advantage is particularly important for high-speed operation.
3. With shields or seals: Available with shields (non-contact) or seals (contact) on one or both sides. These sealed bearings are pre-filled with rust-preventive and lubricating grease (lithium-based #2 grease unless otherwise specified). Operating temperature range: -30°C to +100°C. They are permanently lubricated and require no maintenance.