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Joint bearings are spherical sliding bearings, and the basic type consists of an inner and outer ring with a spherical sliding spherical contact surface. Joint bearings are mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface, which can withstand large loads. According to their different types and structures, they can withstand radial loads, axial loads, or combined loads of both radial and axial loads. Due to the composite material embedded on the outer spherical surface of the inner ring, the bearing can generate self lubrication during operation. It is generally used for low-speed swinging motion, and can also perform tilting motion within a certain angle range. When the support shaft is not concentric with the shaft housing hole, it can still work normally. Self lubricating joint support is applied in industries such as water conservancy and professional machinery.

Rod end joint bearing is a type of spherical sliding bearing with a rod end or mounted on the rod end, consisting of an inner ring outer spherical surface and an outer ring inner spherical surface. It is designed with self-lubricating composite materials and can withstand radial, axial, or combined loads. It is suitable for low-speed swinging, tilting, and rotating movements, and can work stably even when installed incorrectly.

This bearing is divided into more than ten types according to the GB/T9161 standard, including bent rod ball joints, straight rod ball joints, etc., and is also divided into EH, EG and other size series. Its materials include wear-resistant non-metallic lubrication type and oil lubrication type, widely used in fields such as construction machinery, hydraulic cylinders, automotive shock absorbers, etc. The detection methods include vibration analysis and temperature monitoring to prevent damage or overheating faults.