什么情况下选择使用圆锥滚子轴承？(轴承外贸写作素材)

When should you choose to use tapered roller bearings? (Bearing foreign trade material)

轴承的种类多样，各类轴承使用的场合也不同。那么圆锥滚子轴承作为其中重要的一项，究竟在什么情况下选择使用呢？那我们首先就要了解圆锥滚子轴承的结构特点、优缺点及应用场合，才能结合不同的工况判断是否应该选择圆锥滚子轴承。下面我们就从这几部分展开讨论。

There are various kinds of bearings, and different kinds of bearings are used in different occasions. Then, as a very important bearing, under what circumstances will tapered roller bearings be used? First of all, we need to understand the structural characteristics, advantages and disadvantages, and application occasions of tapered roller bearings, so as to judge whether tapered roller bearings should be selected according to different working conditions. Let's start from these parts.

1、圆锥滚子轴承的结构及特点

1. Structure and characteristics of tapered roller bearings

1.1、圆锥滚子轴承的结构

1.1 Structure of tapered roller bearings

圆锥滚子轴承是由圆锥滚道(内圈和外圈)和圆锥滚子组成的单元。该结构适用于组合载荷，例如双向作用的轴向和径向载荷。所有圆锥表面的投影线都在轴承轴线的同一点相聚，以改善滚动，同时减少摩擦。根据接触角的增加或减少，可以增加或减少负载能力。接触角越大，负载能力越高。而且它们通常成对使用，以更好地分配径向载荷。在某些重载应用中，可以将两组或四组一起使用。

Tapered roller bearings are units composed of tapered raceways (inner and outer rings) and tapered rollers. This structure is suitable for combined loads, such as axial and radial loads acting in both directions. The projection lines of all conical surfaces converge at the same point on the bearing axis to improve rolling while reducing friction. According to the increase or decrease of the contact angle, the load capacity can be increased or decreased. The larger the contact angle, the higher the load capacity. And they are often used in pairs to better distribute radial loads. In some heavy-duty applications, two or four groups can be used together.

1.2、圆锥滚子轴承的特点

1.2 characteristics of tapered roller bearing

在圆锥滚子轴承的结构方面，有以下几个特点；

(1)它们是可分离的设计轴承，即带滚动元件的内座圈构成一个单元，进而可以单独安装在外座圈上。

(2)轴承的轴向承载能力在很大程度上取决于与外滚道角度对应的接触角。

(3)圆锥滚子轴承在很大程度上能够承受组合(轴向和径向)负荷，因此比其他轴承具有明显优势。

In terms of the structure of tapered roller bearings, there are the following characteristics;

(1) They are separable design bearings, that is, the inner race with rolling elements constitutes a unit, which can be installed on the outer race separately.

(2) The axial bearing capacity of the bearing depends to a large extent on the contact angle corresponding to the angle of the outer raceway.

(3) Tapered roller bearings can withstand combined (axial and radial) loads to a large extent, so they have obvious advantages over other bearings.

1.3、圆锥滚子轴承的种类

(1)单列圆锥滚子轴承

(2)双列圆锥滚子轴承

(3)四列圆锥滚子轴承

1.3 Types of tapered roller bearings

(1). Single Row Tapered Roller Bearing

(2). Double Row Tapered Roller Bearing

(3). Four Row Tapered Roller Bearings

2、圆锥滚子轴承的优点

2.Advantages of tapered roller bearings

圆锥滚子轴承有很多优点。由于滚子是圆锥形的，并且圆锥形具有一定角度，因此它可以轻松地承受各种方向的载荷。它比球形，圆柱或滚针轴承更好地承受轴向推力和径向负载。

Tapered roller bearings have many advantages. Because the roller is conical and the cone has an angle, it can easily withstand loads in all directions. It withstands axial thrust and radial loads better than spherical, cylindrical or needle bearings.

圆锥滚子轴承的几何形状允许滚子在滚道之间滑动，这意味着在滚子承载时滚子不可能随意滑动。圆锥滚子轴承具有最低载荷要求，以确保滚子和滚道之间不打滑。因为打滑是有害的，它会破坏滚子或滚道表面的润滑，这将导致接触面磨损、轴承过早失效。

The geometry of the tapered roller bearings allows the rollers to slide between the raceways, which means that it is not possible for the rollers to slide freely when the rollers are loaded. Tapered roller bearings have minimum load requirements to ensure non-slip between the roller and raceway. Because slip is harmful, it can damage the lubrication of the roller or raceway surface, which will cause contact surface wear and premature bearing failure.

由于圆锥滚子轴承的独特设计，减少了摩擦，进而减少了运行过程中的热量。锥形形状使得滚子在滚动时均匀地传递载荷。这大大降低了磨损，继而提高了耐用性。如今已普遍运用于变速箱轴和旋转轴中。由于这些轴承的高耐久性，可以保证轴承使用的寿命明显提高。由于其可靠性，它们还可以处理许多重型作业。

Due to the unique design of tapered roller bearings, friction is reduced, which in turn reduces heat during operation. The tapered shape allows the rollers to evenly transfer loads as they roll. This greatly reduces wear, which in turn improves durability. Today tapered roller bearings are commonly used in transmission shafts and rotary shafts. Due to the high durability of these bearings, the service life of the bearings can be significantly improved. Due to their reliability, they can also perform many heavy operations.

3、圆锥滚子轴承的缺点

3. Disadvantages of tapered roller bearings

在某些情况下，圆锥滚子轴承也有一些不足之处。圆锥滚子轴承不能承受动态不对中的载荷。因此它不能像调心滚子轴承那样可以对动态不对中载荷进行调节。因此，在某些应用中，可以通过轴承箱的设计来弥补该不足。

In some cases, tapered roller bearings also have some disadvantages. Tapered roller bearings cannot withstand dynamic misalignment loads. Therefore it cannot adjust the dynamic misalignment load like spherical roller bearings. Therefore, in some applications, this deficiency can be compensated by the design of the bearing housing.

圆锥滚子轴承另一个缺点是速度限制。尽管圆锥滚子轴承可以在高速下运转，但远低于球轴承可以达到的速度极限，并且球轴承在较高速度下产生的热量更少。

Another disadvantage of tapered roller bearings is speed limitation. Although tapered roller bearings can run at high speeds, they are well below the speed limits that ball bearings can reach, and ball bearings generate less heat at higher speeds.

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