Bearing reliability is critical for the continuous operation of equipment in industries such as petrochemicals, power, and metallurgy. The intrusion of contaminants like moisture and dust into bearing housings often leads to lubrication failure and bearing damage, resulting not only in unplanned downtime but also incurring high maintenance costs.

FBU Sealing Technology (Suzhou) Co., Ltd., with 19 years of R&D and manufacturing experience in cartridge mechanical seals, has addressed this pain point by launching the SX series multi-layer labyrinth bearing protector, which has obtained a Chinese Utility Model Patent (CN223563468U). Its core lies in the stepped interlocking structure between the stationary ring and the rotating ring, forming multiple tortuous sealing channels that significantly enhance the ability to block contaminants. The stationary ring is fixed to the bearing housing via an O-ring, while the rotating ring fits with the shaft. A seal ring is also installed between the two rings, achieving dual sealing in both axial and radial directions. The unique design of a three-layer clamping sleeve and snap ring simplifies installation, greatly reducing on-site maintenance time.

This protector is suitable for oil mist lubrication conditions compliant with API610 7th Edition standards, as well as for splash lubrication, grease lubrication, and other horizontal equipment with a linear speed of up to 20 m/s. During actual operation, it effectively prevents the ingress of dust and moisture, controls oil mist leakage, maintains a clean bearing cavity, and thereby extends bearing service life. FBU Sealing is committed to helping customers reduce comprehensive maintenance costs and improve equipment operational stability through reliable sealing solutions.