Long-life installation of SKF bearings
updated: 2012-11-22 0:00:00 hit:813
The SKF bearings under the contract at the time of manufacture is prescribed clearance, this clearance is generally referred to as the original clearance; while the bearing is installed on the host, a ferrule interference fit, resulting in the bearing clearance valuesreduce the clearance after installation is called installation clearance; after the operation, the temperature of the bearing parts increases, the volume change, compounded with the axis of the bearing to match the temperature or shell-year-old elevated elongation phenomenon occursthis leads to bearing clearance again change this up clearance work is called work clearance. Clearance work generally is less than the the installed clearance, sometimes the clearance value will increase as the group with the installation of different.
SKF bearings long life, high precision; low noise, low vibration, resistant to high-speed, resistance to overload, high rigidity and high reliability requirements. Conversely, to achieve these demands on the bearings, bearing users must strictly comply with all relevant provisions of the bearing application technology, to achieve all the requirements of the bearing application technology imported bearings SKF professional sector can be achieved with the necessary, but only rely buy high specification bearings without emphasis on the application of technology, often to no avail.
Clearance noise, the ideal state is when the bearing is in operation the maximum temperature state, the clearance value is exactly zero. Judgment clearance is too large: the stationary state of the shaft for axial displacement, its reciprocating amplitude, issued in the operation a large Zhongzhuo noise.
Running issue annoying shrill whistling, SKF bearing roller manufacturing instructions bearing preload too have larger preloaded bearing preload should be slightly relaxed the degree. If the clearance is too large, so that the two bearing rings axially slightly relative deviation: reduced clearance, but also increases the axial rigidity bearing noise can be reduced.