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刘小会3、4页

(2009-10-26 17:32:26)
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杂谈

S-Bearing Units                                              Deep-groove ball bearings with extended inner rings ,called S-bearing units, are manufactured in a number of designs. At one end of the inner ring, the bearing is clamped to the shaft with an eccentric locking ring (Figure 1.7) or with two setscrews (Figure 1.8) .On both sides the bearings have rubbing contact seals and sometimes flingers (Figure 1.8) as an added protection. As a rule, the outside diameter of the outer ring is ground spherically, so the ring can align itself in a suitably designed sheet-steel or cast-iron housing if the beating locations are misaligned. These bearings are mainly used in agricultural machinery, conveying installations and construction machinery.
带有扩展内圈的深沟球轴承,即        ,可以制造成多种形状。在内圈的一端,轴承通过偏心锁定环(图1.7)或者两个定位螺钉(图1.8)被固定在轴上。轴承的两边都有摩擦接触式密封,有时抛油环(图1.8)作为一个额外保护。
按照规定,外圈的外径是      ,所以在轴承错位的时候能够自调以能够配合一个设计合理的钢板或铸铁钢架。这些轴承主要用于农业机械,输送设备和工程机械。
 Deep-Groove Ball Bearings with Filling Slots
This bearing type was a predecessor of the deep-groove ball bearing without filling slots(Figures 1.9 and 1.10).On one side of the bearing, both rings were provided with a filling slot in the shoulder , through which the balls were fed into the bearing.
这种轴承类型是无装配槽的深沟球轴承(图1.9和1.10)的前任。在轴承的一侧,内圈和外圈在轴肩处都有一个装配槽,通过该槽球被纳入轴承。
These bearings were less suitable under axial loads because the balls ran over the filling slots . Since nearly all bearing applications involve axial loads , the type without filling slots has largely  replaced the bearing with filling slots.
这些轴承由于球要通过装配槽已不太适合在轴向负载下运行。因为几乎所有的环境都有轴向负荷,所以无装配槽类型已经在很大程度上取代了有装配槽的类型
Magneto Bearing is similar in its construction to the deep-groove ball bearing without filling slots. The outer ring, however, has only one shoulder , so the bearing can be taken apart .The circular profile of the outer-ring raceway merges smoothly at its apex into a straight profile. Magneto bearings transmit axial forces in only one direction. Two bearings adjusted against one another are therefore required for the axial guidance of a shaft .The bearings are generally installed with a small axial clearance in order to compensate for length variations of shaft and housing.
磁轴承是在构造上类似的无装配槽的深沟球轴承。但是外圈只有一个轴肩,所以轴承可以拆开。外圈滚道的圆形轮廓在它的顶点处,顺利地归并到笔直轮廓上。磁轴承只传递一个方向的轴向力。两个相互调整的轴承因此需要一个轴轴向引导。轴承一般设一个小轴向间隙,以弥补轴和轴承座的长度变化。
Since magneto bearings can be taken apart, the outer ring and the inner ring with cage and ball set may be installed separately. The balls are retained in a U-shaped cage, made in one piece of brass sheet or sheet steel, or in a solid cage of glass-fibre reinforced polyamide. Cage, balls ,and inner ring form a single constructional unit (see Figure 1.11) .Although the outside diameter of all other rolling beatings has a minus tolerance, all magneto beatings have the tolerance +0.01 mm. The origin of this difference is historic.
由于磁轴承可以被拆开,外圈和带有保持架和球设置的内圈可以单独安装。球固定在一个用黄铜片或钢板做成的U形保持架上,或在一块用玻璃纤维加强的聚酰胺做成的刚性保持架上。保持架,球,和内圈形成一个单一的结构单元(见图1.11)。
虽然所有其他滚动  外径有负公差,所有磁  公差0.01毫米。这一差别的起源是历史性的。
Magneto bearings are installed in small electrical appliances, dynamos, car starter motors, vacuum cleaners, compasses, etc. They are increasingly superseded by deep-groove ball bearings.
磁轴承安装在小家电,发电机,汽车起动电机,真空吸尘器,指南针等,他们日益被深沟球轴承取代。
Single-Row Angular Contact Ball Bearings
In single-row angular contact ball bearings, as shown in Figure 1.12,   raceways are so arranged that the forces are transmitted from one raceway to the other under a certain contact angle the angle between the line of action of the force and the radial plane. They are made in series with contact angles of 15°,25°and 40°.
在单列角接触球轴承,如图1.12,滚道的布置,在某一接触角时,使载荷从一个滚道传输到另一个滚道。他们被制成接触角为15 °,25 °和40 °的系列。
Due to their contact angle, single-row angular contact ball bearings are better suited to sustaining high axial loads than deep-groove ball bearings. However, they can sustain radial loads only when simultaneously subjected to axial loads.
由于其接触角,单列角接触球轴承比深沟球轴承更适合维持高轴向负荷。然而,他们只有当同时受轴向负荷时才能够承受径向载荷。

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