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一、概述直径在400～1000毫米以上的滚动轴承称为特大型轴承。它在工程机械中得到了广泛的应用,例如在全回转起重机和挖掘机中往往采用特大型轴承作为支承回转装置。我国目前制造的特大型轴承直径已达4000毫米以上,在工程机械中用作转盘的轴承直径有的也达到了 3000毫米。特大型轴承与普通轴承的最大区别是:第一,特大型轴承往往受有较大的倾复力矩,而单个普通轴承基本上不受倾复力矩;第二,特大型轴承转速较低,一般在10转/分以下,有
First, an overview of the diameter of 400 ~ 1000 mm above the rolling bearings are called large bearings. It has been widely used in construction machinery, such as large slewing cranes and excavators are often used in large bearings as support slewing device. At present, the diameter of oversized bearings manufactured in our country has reached more than 4,000 millimeters, and the diameters of bearings used as turntables in construction machinery have also reached 3,000 millimeters. The biggest difference between super-large bearings and ordinary bearings are: first, super-large bearings tend to be subject to a large moment of overturn, and a single ordinary bearing basically free from overturning moment; second, extra large bearings speed is low, the general At 10 rpm, there is