为了从直线轴承取得佳的运转性能，内圈与轴以及外圈与轴承座孔之间的配合须正确。若配合表面接合不充分，轴承套圈可能在轴上或在直线轴承座孔中作圆周运动。这种现象称为蠕动。一旦配合表面开始蠕动，轴承套圈将开始过度磨损，并可损伤轴和轴承座，磨料碎片可能进入轴承，引起不正常的发热或振动。

In order to obtain good running performance from linear bearings, the fit between the inner ring and the shaft and between the outer ring and the bearing housing hole must be correct. If the mating surface is not fully engaged, the bearing race may make circular motion on the shaft or in the linear bearing housing hole. This phenomenon is called peristalsis. Once the mating surface starts to creep, the bearing collar will start to wear excessively and may damage the shaft and bearing seat. Abrasive debris may enter the bearing, causing abnormal heating or vibration.

蠕动常常不可能仅仅靠轴向夹紧轴承来防止。为防止蠕动，承受回转载荷的直线轴承套圈须提供必要的过盈配合。承受静止载荷的轴承套圈一般并不要求采用过盈配合，除非因为振动引起接触腐蚀。

It is often impossible to prevent creep by simply clamping the bearing axially. In order to prevent creeping, the linear bearing ring bearing slewing load must provide necessary interference fit. Interference fit is not generally required for bearing rings bearing static load, unless contact corrosion is caused by vibration.

关于直线轴承的异常声，是一个新问题又是一个老问题。因为它是近年来轴承由低振动值向静音方向发展，轴承质量不断提高过程中暴露出的问题。

The abnormal sound of linear bearing is a new and old problem. Because it is a problem exposed in the process of continuous improvement of bearing quality in recent years when the bearing develops from low vibration value to silent.

关于老问题，是因为在追求低振动的初期没有对轴承的声响质量提出更高的要求，但轴承异常声是客观存在的，一旦轴承的振动值稳定的降低到一定的水平后，异常声就突现出来了。

As for the old problem, it is because there is no higher requirement for the sound quality of the bearing at the beginning of the pursuit of low vibration, but the abnormal sound of the bearing is objective. Once the vibration value of the bearing is steadily reduced to a certain level, the abnormal sound will emerge.

对大部分低噪声，振动值大和有异常声等三类不同档次的直线轴承，它们的振动峰值按从低到高的顺序排列为：低噪声轴承，有异常声的轴承，振动值大的轴承。

For most of the three different grades of linear bearings with low noise, high vibration value and abnormal noise, their vibration peaks are arranged from low to high: low noise bearing, bearing with abnormal noise, and bearing with high vibration value.

这说明有异常声轴承的振动加速度级峰值处于低噪声与振动值大的轴承两者之间。因此，用振动有效值来评价轴承异常声的误判率较高。更多相关内容就来我们网站http://www.jngongrun.com咨询！

This shows that the peak value of vibration acceleration level of bearing with abnormal noise is between the low noise and the high vibration value. Therefore, the error rate of using the vibration effective value to evaluate the abnormal sound of bearing is high. Come to our website for more relevant content http://www.jngongrun.com consulting service