Skeleton oil seal structure is composed of three parts: oil seal body, strengthened skeleton and self-tightening spiral spring.
The sealing body is divided into base, waist, cutting edge and sealing lip according to different parts.
Generally, the skeleton oil seal in free state has a smaller diameter than the diameter of axle, that is, it has a certain amount of overfilling.
Therefore, when the oil seal is loaded into the oil seal seat and shaft, the pressure of the oil seal's cutting edge and the contraction force of the self-tightening spiral spring exert a certain radial tightening force on the shaft. After a period of operation, the pressure will rapidly decrease or even disappear. Therefore, the spring can compensate the self-tightening force of the oil seal at any time.
Skeleton oil seal is a typical representative of oil seal. Generally speaking, oil seal refers to skeleton oil seal.
The function of oil seal is usually to isolate the transmission components that need lubrication from the output components, so as to prevent oil leakage.
The skeleton ACTS as the steel bar inside the concrete members, strengthening them and keeping the oil seal in shape and tension.
According to the structure form can be divided into single lip skeleton oil seal and double lip skeleton oil seal.
The secondary lip of bilabial skeleton oil seal plays the role of dustproof, preventing the dust outside, impurity and so on from entering the machine interior.
According to the pattern of skeleton, it can be divided into inner frame oil seal, exposed frame oil seal and assembly type oil seal.
According to the working conditions can be divided into rotary skeleton oil seals and round-trip skeleton oil seals.
Used for gasoline engine crankshaft, diesel engine crankshaft, transmission, differential, shock absorber, engine, axle and other parts
Composition of skeleton oil seal: inner package skeleton oil seal: B type: 1. Skeleton 2. Fastening spring 3. Rubber body FB type: 1. Skeleton 2. Fastening spring 4
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