1211K Double Raw Ball Bearing KKK

A double-row ball bearing is a type of rolling-element bearing that consists of two rows of ball bearings separated by a central raceway, which is typically in the shape of a cylinder or inner ring. These bearings are designed to support axial and radial loads simultaneously, making them suitable for a wide range of applications where both types of loads need to be accommodated.

Here’s a more detailed description of a double-row ball bearing:

• Inner Ring: The inner ring is the central part of the bearing and is typically attached to a rotating shaft. It contains the raceway in which the balls roll.
• Outer Ring: The outer ring surrounds the inner ring and is usually stationary. It also has a raceway for the balls to roll in.
• Ball Bearings: Double-row ball bearings have two sets of ball bearings, one set in each raceway. These balls are evenly spaced and move freely within their respective raceways. They are responsible for reducing friction and allowing smooth rotation between the inner and outer rings.
• Cage: The ball bearings are often held in place by a cage or separator, which maintains their spacing and prevents them from coming into contact with each other. The cage is typically made of metal or plastic.
• Load Capacity: Double-row ball bearings are known for their ability to handle both axial (thrust) and radial (rotational) loads simultaneously. This makes them versatile and suitable for applications such as industrial machinery, automotive components, and conveyor systems.
• Precision: These bearings are available in various precision classes, from standard precision to high precision, to meet the requirements of different applications. Higher precision bearings are capable of smoother and more precise rotation but may be more expensive.
• Lubrication: Proper lubrication is essential to reduce friction and wear within the bearing. Grease or oil is commonly used as lubricants, depending on the operating conditions.

Double-row ball bearings are available in different configurations, including angular contact and self-aligning designs, to suit various application needs. They are valued for their ability to handle heavy loads and provide reliable performance in a wide range of industries.