FAQ
FAQ:
Q1. What is an oil seal?
Q1. What is an oil seal?
A: The oil seal is the customary name for general seals. As the name implies: the oil seal is a mechanical component that uses sealing oil (the most common oil substance in the transmission system, and also refers to general liquid substances). From the role of the oil seal, the seal, characteristics, seal type, seal state and seal are usually called the axle seal form, but the seal state and seal are usually called the axle seal form, but the seal state and seal are usually called the seal (generally to the seal). Generally speaking, the identification card is not very meaningful by definition. It is more about the practical application of fuel oil and the role of solutions in sealing devices.
Q2: What is a skeleton oil seal?
Q2: What is a skeleton oil seal?
A: The skeleton oil seal is relatively simple and generally consists of three parts: the oil seal body, the reinforced skeleton and the self-tightening coil spring. The sealing body is divided into bottom, waist, cutting edge and sealing lip according to different parts. The skeleton is like the steel bars in the concrete member, which acts as a reinforcement and enables the oil seal to maintain its shape and tension. Generally, the inner diameter of the skeleton oil seal in the free state is smaller than the shaft diameter, that is, it has a certain "interference". Therefore, after the oil seal is installed on the oil seal seat and the shaft, the pressure of the oil seal edge and the contraction force of the self-tightening coil spring will produce a certain radial tightening force on the shaft. After a period of operation, the pressure will rapidly decrease or even disappear. , Therefore, adding a spring can compensate for the self-tightening force of the oil seal at any time.
Q3: What kinds of oil seals are there in the car?
Q3: What kinds of oil seals are there in the car?
A: Engine: Crankshaft - crankshaft front and rear oil seal valve - valve oil seal (engine repair kit o-ring) (distributor oil seal, water pump oil seal, balance shaft oil seal, oil pump oil seal...); camshaft - cam Axle oil seal; Transmission: Transmission--transmission front and rear oil seals, shift lever oil seal (transmission repair kit o-ring) (transfer case--transfer case front and rear oil seals); Rear axle: half shaft--rear half shaft Oil seal differential -- (front) rear angle vector oil seal, rear wheel oil seal, front wheel oil seal, direction oil seal (steering machine repair kit o-ring), steering booster oil seal (front axle oil seal).
All parts that have liquid lubricating oil in the running body box and are connected to the outside need oil seals. Some are rubber, some are metal, most are steel rubber, such as crankshaft rear oil seal, gearbox front and rear oil seals, left and right half shaft oil seals, main reducer front oil seals, air compressor crankshaft oil seals, etc.
Q4:Are shaft seals and oil seals the same product?
Q4:Are shaft seals and oil seals the same product?
A: Yes, in a broad sense, they belong to different names of rotating shaft dynamic seals. In a narrow sense, the difference between shaft seals and more refers to the pump shaft end steam seal. The seal between the rotating pump shaft and the fixed pump casing prevents high-pressure liquid from flowing from the pump. Inner leakage along the shaft, or outside air seeps along the shaft. Oil seals mostly refer to the sealing of lubricating oil, and are often used in bearings of various machinery, especially rolling bearings. Its function is to isolate the oil chamber from the outside world, seal the oil inside and seal the dust outside.
Q5:What do SB, SC, TB, TC oil seals mean? What are the common forms of oil seals?
Q5:What do SB, SC, TB, TC oil seals mean? What are the common forms of oil seals?
A: They are the names of different forms of oil seals. The common forms of general-purpose oil seals are as follows:
Q6:What material is the oil seal made of? What are the common ones?
Outer diameter design
|
Double iron shell (the outer iron shell wraps the inner shell) |
shell iron shell |
rubber covering |
Fully covered with rubber |
Completely covered with inner and outer rubber |
||
Inner diameter design
|
|||||||
spring |
lip design |
|
A |
B |
C |
F |
M |
installed
|
single lip |
S |
SA |
SB |
SC |
SF |
SM |
lips |
T |
TA |
TB |
TC |
TF |
TM |
|
Not installed |
single lip |
V |
VA |
VB |
VC |
VF |
VM |
lips |
K |
KA |
KB |
KC |
KF |
KM |
Q6:What material is the oil seal made of? What are the common ones?
A: Oil seals are generally made of oil-resistant rubber. Nitrile rubber is one of the most commonly used rubbers for oil seals and O-rings. It can be said to be the most widely used and lowest cost rubber seals. The most commonly used oil seals are polyacrylate rubber, silicone rubber, fluorine rubber and polytetrafluoroethylene.