High‑temperature Bearing

 

Conventional bearings depend heavily on sealing rings to achieve tight sealing. High‑temperature bearings rarely use standard contact rubber seals; labyrinth non‑contact seals are widely applied, and some only feature basic dust‑proof treatment.

The rubber seals of conventional bearings tightly fit against the inner and outer rings by material elasticity to block dust and moisture. However, general‑purpose polymer sealing materials such as nitrile rubber have limited temperature resistance. Once exceeding the critical temperature, they will rapidly harden, crack and lose elasticity. The seals fail first, and fallen debris may intrude into the bearing interior and cause secondary contamination.

  In short: under high‑temperature working conditions, rubber sealing rings fail to deliver long‑term protection; instead, they become hidden hazards that accelerate bearing damage.

  KENT Bearing’s solution is to adopt labyrinth‑type non‑contact seals. Tortuous clearance channels are formed between the inner and outer rings. Impurities are blocked from intrusion via these labyrinth paths, and protection is achieved without material contact. Free of frictional heat generation and rubber heat‑resistance bottlenecks, dust‑proof performance is realized by mechanical structure rather than rubber elasticity. For ultra‑high‑temperature applications with clean surroundings, open‑type structures combined with external protective shields are also adopted for joint protection. Under such conditions, temperature rise and material aging risks caused by full sealing far outweigh the threat of impurity ingress.

  Every structural trade‑off for high‑temperature bearings comes from repeated evaluation against actual working conditions. Seemingly “simplified” sealing solutions are in fact professional designs tailored for high‑temperature environments. When selecting bearings, do not merely refer to parameter tables. Understanding the matching logic between working conditions and structures is the key to stable and durable solutions.

  With over 20 years of dedication to the bearing industry, KENT Bearing keeps investing in core‑technology research and has built distinct product advantages. Compared with peers, our products not only meet strict noise‑reduction requirements across multiple industries, but also satisfy customers’ core demand for long service life with genuine quality and outstanding durability.