Shandong XuanYe Precision Machinery Co., Ltd.
English
ball bearing is a kind of rolling bearing. The ball is installed in the middle of the inner steel ring and the outer steel ring, which can bear a large load.
What are ball bearings?
What are the differences between ball bearings and cylindrical roller bearings?
How to choose the internal clearance of ball bearing?
ball bearing is a kind of rolling bearing. The spherical alloy steel ball is installed in the middle of the inner steel ring and the outer steel ring to reduce the friction during the power transmission process and improve the transmission efficiency of mechanical power by rolling. ball bearings cannot withstand large heavy loads and are more common in light industrial machinery. ball bearings are also called ball bearings. Specifically: deep groove ball bearings, self-aligning ball bearings, angular contact ball bearings, thrust ball bearings, outer spherical bearings, linear bearings, rolling screw bearings, etc.
different characteristics
1. Cylindrical roller bearing: The roller and the raceway are in line contact or trimmed line contact, and the radial bearing capacity is large, which is suitable for bearing heavy loads and impact loads. The friction coefficient is small, suitable for high speed, and the limit speed is close to deep groove ball bearings. Type N and Type NU can move axially and can adapt to changes in the relative position of the shaft and the housing caused by thermal expansion or installation errors, and can be used as free end supports.
2. Deep groove ball bearings: Deep groove ball bearings have a simple structure and are easy to achieve higher manufacturing accuracy compared with other types, so they are convenient for mass production in series, with low manufacturing costs and extremely common use. In addition to the basic type, deep groove ball bearings also have various modified structures.
The following points should be considered when selecting the most suitable clearance according to the conditions of use:
(1) Changes in clearance caused by the fit between ball bearing and the shaft and housing.
(2) The change in clearance caused by the temperature difference between the inner and outer rings during ball bearing operation.
(3) The material used for ball bearing and the housing affects the change of bearing clearance due to different expansion coefficients.
Generally, for bearings that work normally, the radial clearance of the basic group should be used first. However, for bearings that work under special conditions, such as high temperature, high speed, low noise, and low friction, the radial clearance of the auxiliary group can be selected. Select a smaller radial clearance for precision bearings, machine tool spindle bearings, etc. If there are special requirements for bearing clearance, ball bearing can meet the needs of customers.
Shandong Xuanye Precision Machinery Co., Ltd. is located in the beautiful spring city of Jinan. Founded in 2006, with 15 years of development history, the company has a registered capital of 20 million yuan and covers an area of 88850 square meters.As a large bearing enterprise, the company's leading products include three main categories, with more than 8000 types of bearing products. The product ranges include: short cylindrical roller bearings (single/double row, four row), deep groove ball bearings and so on.
