Differences between Angular Contact Ball Bearings and Deep Groove Ball Bearings

I. Structural Characteristics

1. Angular Contact Ball Bearings:
   • There is a specific contact angle between the raceways of the inner and outer rings relative to the axis. Common contact angles include 15°, 25°, 40°, etc. The raceway design adopts a combination of an arc and a straight line, enabling it to bear both radial and axial loads simultaneously. The bearing model usually starts with "7" or "3", indicating a single-row or double-row angular contact ball bearing.
2. Deep Groove Ball Bearings:
   • The arc of the raceways of the inner and outer rings is relatively deep, approaching a complete circle. It mainly bears radial loads and can also bear a certain amount of axial loads.
   • The bearing model starts with "6", and common models include 6204, 6305, etc.

II. Load-bearing Capacity

1. Angular Contact Ball Bearings:
   • They have a strong axial load-bearing capacity, which increases with the increase of the contact angle. After optimizing the contact angle, the accuracy and rotational speed capabilities of the bearing can be improved.
2. Deep Groove Ball Bearings:
• They have a strong radial load-bearing capacity, but the axial load-bearing capacity is relatively weak. When there is a relatively large radial clearance, they can bear a relatively large axial load.

III. Rotational Speed

1. Angular Contact Ball Bearings:
   • They reduce the contact area between the rolling elements and the raceways, resulting in small friction and high rotational speeds. They are suitable for high-speed rotating equipment such as high-speed spindles and high-speed pumps.
2. Deep Groove Ball Bearings:
   • Their rotational speed capabilities are relatively lower, and they are suitable for medium and high-speed rotating working conditions. The friction coefficient is small, and the limiting rotational speed is also relatively high, but it is not as high as that of angular contact ball bearings.

IV. Installation and Use

1. Angular Contact Ball Bearings:
   • They usually need to be installed in pairs or in multiple rows to balance the axial force. By adjusting the mating preload, the performance of the bearing can be ensured.
2. Deep Groove Ball Bearings:
   • A single bearing can be installed independently, and the installation and maintenance are simpler. The requirements for installation accuracy are relatively low.

V. Application Scenarios

1. Angular Contact Ball Bearings:
   • They are suitable for scenarios that require high rigidity and high precision, such as machine tool spindles, high-frequency motors, centrifugal separators, etc. They are also commonly used in fields such as metallurgical equipment, mining machinery, construction machinery, and paper-making machinery.
2. Deep Groove Ball Bearings:
   • They are widely used in various mechanical equipment, such as gearboxes, instruments, motors, household appliances, etc. They are also suitable for situations where radial loads and small axial loads need to be borne.