| 摘要 |
PURPOSE:To prevent lubricant from leaking, a machine from being deteriorated due to the mixture of foreign matters, and a roller bearing from being damaged, by arranging ring-shaped elastic rubber units almost to come in contact with a rotary shaft, between the inner diameter side of lubricant filler chambers confronting the side face of the roller bearing and the rotary shaft. CONSTITUTION:Oil seals 100 are fixed on the inner diameter side of lubricant filler chambers 60 and 70 arranged on bearing covers 40 and 50 placed on the both sides of a roller bearing covers 40 and 50 placed on the both sides of a roller bearing 2. Generally, metal rings 100E are arranged on the outer diameter side. Open air is absorbed into a machine through an air chamber 8 via an air passage 10 through an air chamber 9. The main units 100D of the oil seals 100 are generally made of elastic rubber, and the material is determined subject to the adequate use. On the inner diameter side, namely, on the surface confronting a rotary shaft 1, lips 100A and 100B are arranged on the both sides, and the sections are arranged to come in contact with the rotary shaft 1. Accordingly, lubricant and base oil can be prevented from being leaked by the one side lip, and foreign matters included in open air can be prevented from being infiltrated by the counter side lip. |
