Ningbo Hardchn bearing Co., Ltd.
In most operating conditions, rolling bearings are used with proper clearance. According to different purposes, there are also internal stresses that are generated in advance when the bearing is installed, so that the bearing can be used under negative clearance. This method of use is called preload... read more
In small motors, ball bearings are usually used. The rolling elements (steel balls) are in mechanical contact with the inner ring and the outer ring. They are surrounded by a layer of lubricating oil, which can slightly cushion the contact surface and expand it slightly. If the rolling elemen... read more
In order to maintain the good performance of the electric tools motor bearing, daily maintenance, testing, overhaul and preventive measures must be done. For long-term operation of equipment, the usual detection and tracking is particularly important, including bearing rotation sound, vibration, tem... read more