轎車(chē)的輪轂軸承過(guò)去最多的是成對(duì)使用單列圓錐滾子或球軸承。隨著技術(shù)的發(fā)展，轎車(chē)已經(jīng)廣泛的使用轎車(chē)輪轂單元。輪轂軸承單元的使用范圍和使用量日益增長(zhǎng)，目前已經(jīng)廣泛發(fā)展使用到了第三代。
第一代是由雙列角接觸軸承組成。
第二代是外圈帶法蘭盤(pán)的雙列角接觸軸承單元，可簡(jiǎn)樸的將軸承套到輪軸上用螺母固定。使得汽車(chē)的維修變得輕易。車(chē)輪轂及剎車(chē)盤(pán)直接安裝在法蘭盤(pán)上。
第三代輪轂軸承單元是采用了軸承單元和防抱剎系統(tǒng)相配合的一種結(jié)構(gòu)。輪轂單元設(shè)計(jì)成有內(nèi)法蘭和外法蘭，內(nèi)法蘭用螺栓固定在驅(qū)動(dòng)軸上，外法蘭將整個(gè)裝置安裝于車(chē)身。
輪轂單元逐步取代輪轂軸承的主要有點(diǎn)：裝車(chē)時(shí)無(wú)需調(diào)游隙，組裝工藝更趨合理，輕小型化，可靠性高，維修方便，整體成本降低等。
本公司主要開(kāi)發(fā)第二、三代輪轂軸承單元，已經(jīng)開(kāi)發(fā)600多個(gè)型號(hào)。
Development of hub units on automobiles
Automobile hub units is the transmission part connecting the suspension system and the wheels.
The most popular hub bearing used on a Vehicle used to be single row taper roller or ball bearing which are used in pairs. As technology develops, the passenger automobiles have been using sedan hub units. The range and volume of usage have been increasing rapidly. Now it has been generally developed to the third generation.
The first generation is made of dual row angle contact bearings.
The second generation is dual row angle contact bearing units with outer flange. The bearing can be simply attached to the wheel axle and fixed with bolts. This made the repairing of cars much easier. The hub of a vehicle and brake pad can be installed on the flange.
The third generation hub bearing units apply the structure combined by bearing unit and ABS system. Hub unit is designed into inner flange and outer flange, the inner flange is fixed to the drive axle with bolts, while the outer flange connects this whole device to the car.
The advantages of hub units taking the place of hub bearings are, no need to adjust the Clearance when being installed, the assembling mechanics gets more reasonable, it gets lighter while the reliability goes higher, convenient to maintain, the overall cost goes down, etc.
