what is a UC213-40 Radial insert ball bearing?

UC213-40 is a non-standard insert ball bearing with automatic centering function, they are suitable for mechanical transmission scenarios that require bearing radial and axial loads. ‌

Its main dimensions include an inner diameter of 63.5 millimeters, an outer diameter of 120 millimeters, and a thickness of 65.1 millimeters, with a weight of approximately 3.9 KGS

This type of bearing is widely used in conveyors, pump equipment, agricultural machinery, metallurgical equipment, and general industrial fields. Due to its good sealing design and convenient installation, it is commonly used in simple support structures.

basic Information

Precautions

During installation, it is necessary to ensure that the installation surface is clean, flat, and free of burrs to avoid stress concentration or uneven loading; When installing the top screw, it should be uniformly tightened to the specified torque (usually 20-30 N · m) to prevent bearing eccentricity or premature wear; At the same time, the tolerances of the shaft and bearing housing must meet the standard requirements (such as shaft tolerance k6, seat hole tolerance H7) to ensure the accuracy of the fit. ‌

About the terms of operating environment, the working temperature range of UC213-40 is generally -20 ° C to+100 ° C. If it exceeds this range, we should choose special seals or lubricating grease; In humid, dusty, or corrosive environments, the sealing status should be regularly checked and waterproof and corrosion-resistant lubricating grease (such as lithium based grease) should be used; To avoid long-term overload operation, the actual load should not exceed 80% of the rated load to reduce fatigue damage. ‌

It is recommended to replenish lubricating grease every 2000-3000 hours for lubrication and maintenance. Low noise, long-life composite calcium based grease or molybdenum disulfide grease should be preferred; When lubricating, it is necessary to ensure that the lubricating grease evenly fills 1/3 to 1/2 of the internal space of the bearing to avoid excessive temperature rise. ‌

During troubleshooting, abnormal noise may be caused by installation eccentricity, insufficient lubrication, or bearing damage, and we should stop the machine for inspection; Excessive temperature rise is usually related to poor lubrication or excessive load, and the machine should be stopped immediately to check the lubrication and load conditions; We should regularly check the tightening status of the top screw and the bearing housing bolts to prevent loosening and failure. ‌

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