Kaydon Reali-Slim® A 型角接触球轴承具有足够的径向间隙，可产生较大的接触角以抵抗轴向载荷。该接触角在标准轴承中为 30°。使用超深球槽（球直径的 25%）。

Kaydon A型薄截面轴承的显着特点在于装配方法。一个环，通常是外环，被埋头孔以减少滚道的一个台肩，使得在两个环之间的温差的帮助下，外环可以安装在内环、球和分离器上集会。这提供了一种不可分离的轴承，能够承载更大的径向载荷，同时抵抗一个方向上的相当大的轴向力。在施加轴向力的情况下，内圈和外圈的面大致齐平，以尽量减少预载调整。

这种装配方法允许使用比Kaydon C 型 Conrad 装配轴承更多的滚珠，加上相当大的接触角，使 A 型轴承具有更大的推力能力。

由于其单向推力能力，该Kaydon 轴承应与另一个轴承相对安装，以便存在轴向力以建立和保持接触角，并**限度地减少反向推力载荷下的轴向移动。

在背对背安装中，轴承可通过内圈夹紧环下方的垫片通过内圈进行调节，并且接触线会聚在轴承外部。**初提供足够厚度的垫片以允许轴相对于外壳轴向移动。然后可以测量总的轴向运动，并且垫片厚度减少运动量加上预加载所需的任何额外量。当两个轴承彼此相对以消除所有内部间隙并且在滚珠和滚道之间发生弹性变形时，轴承被称为“预加载”。

When bearings are mounted face-to-face, the contact lines converge inward. Spacers are used between both the inner and outer races and adjustment is possible by varying the length of one spacer relative to the other. Normally, however, the spacers are equal in length and the bearings are furnished as a matched pair with a predetermined internal fit. If the outer race spacer were removed from this assembly, the bearings could be adjusted by use of shims under the outer race clamping ring.

Duplexed bearings
Kaydon type A thin section bearings are furnished as matched sets—available direct from the factory—when they are to be mounted adjacently or with equal length inner and outer race spacers. When required, Kaydon can supply assemblies with matched ground spacers. Duplexed bearings are supplied in back-to-back, face-to-face, or tandem arrangements. Sets of three, four or more bearings can also be matched where conditions require additional capacity and there is insufficient space radially for larger bearings.

Back to back (left)
Face to face (center)
Tandem (right)

Kaydon bearings in these sets are matched within close limits for size of bore and outside diameter. Each set is marked with a 'V' across the bores and outside diameters at the high point of radial runout to indicate the proper orientation of the races at installation.

Bearings provided in back-to-back and face-to-face arrangements are normally furnished with the race faces ground, to provide preload when installed. To accomplish this, a gap is provided between the inner races of the back-to-back pair and between the outer races of the face-to-face pair. When the bearings are installed and clamped axially, the gap is closed, producing a preload on the bearings.

A back-to-back arrangement在力矩载荷下提供更大的刚度，应该在单个轴承之间的空间很小或使用一对相邻轴承时使用。

A面对面安排对轴和外壳之间的不对中容忍度更高，当沿一个轴有多对轴承时应予以考虑。当单个轴承面对面安装时，它们必须有足够的间距以提供对力矩载荷的抵抗力。如果需要，一对面对面的轴承可以与另一个轴承一起安装在“固定-浮动”布置中，并且一对处于固定位置。

串联轴承组具有单向推力能力，必须与另一个轴承或轴承组相对安装。

将目录额定载荷应用于配对组时，总径向承载力被认为等于单个轴承径向额定值乘以 N0.7，其中 N 是组中轴承的数量。每个方向的推力容量被认为等于单个轴承额定推力乘以 N0.7，其中 N 是在该方向上抵抗推力的轴承数量。

除非特别要求，否则轴承组的外侧面不受控制。如果出于预加载目的需要外侧面齐平，则应考虑通用研磨轴承。在通用磨削轴承上，内侧和外侧面在指定的计量载荷下匹配，以控制预载荷并允许安装方向的灵活性。