According to the use of parts and conditions of use and environmental conditions to select the size, precision, with appropriate bearing is to ensure that the slewing ring, bearing life and feasibility of the premise.
1, the use of parts: tapered roller bearings for radial load to bear the radial and axial joint load, usually two sets of bearings used in pairs, mainly in front and rear wheels of the car, driving bevel gear, differential Gear reducer and other transmission parts.
2, Allowable speed: In the installation of correct, well-lubricated environment, allowing the bearing speed limit of 0.3-0.5 times. Under normal circumstances, to 0.2 times the speed limit for the most appropriate.
3, to allow tilt angle: Tapered roller bearings generally do not allow shaft relative housing hole tilt, if tilt, the maximum does not exceed 2 '.
4, the allowable temperature: In the normal load, and the lubricant has high temperature performance, and lubrication conditions, the general bearing allows -30 ℃ -150 ℃ ambient temperature work.
Need to check the running state of the machine at which the bearing is the focus of attention and preparing a thorough inspection program has become more and more important. Because it is the most important condition monitoring of all rotating machinery parts to prevent the rotary bearing, turntable bearing bearing damage to prevent unplanned maintenance equipment is an important part of the early detection of bearing damage caused during the shutdown.
But not all machines are equipped with this advanced equipment. In this case, the machine operator or service engineer must adhere to the bearing fault signal alarm.
Smooth and crisp sound of the business, the sharp creak noise may be due to inadequate lubrication caused by inadequate bearing clearance can also cause metal sound. Dents in the bearing raceways can cause vibration. As for the noise caused by the equipment caused by percussion scars, this noise bearing different speed levels. If there is intermittent noise, then the rolling part may be damaged, and this kind of sound appears when the surface is damaged by the launch date, if the bearing hissing "sound pollution often causes serious damage to the bearings and causes an irregular huge noise.
But usually at this time to replace the bearing is not necessary. Therefore, the slewing bearing, turntable bearing damage, of course, can also be heard by listening. Such as the use of better methods, such as electronic health monitoring equipment, bearing eruption prior to operation. Electronic health monitoring equipment, bearings eruption before operation.
