With the development of science and technology, machine tool spindle speed is more and more high, speed range is more and more big, therefore, high-speed stability of IKO bearing requirements more and more is also high.
The temperature rise of the machine tool spindle bearing is an important factor to limit bearing rotating speed.
Normally, the correct choice of non-standard bearing type and tolerance grade, the configuration way, clearance (
Pre-load)
, lubricants and lubrication method, such as size, can to a certain extent, improve the high speed performance of rolling bearings.
Main technical requirements of the bearing for general machine tools, the life of the spindle components is mainly refers to the use of the term to keep the spindle precision, therefore, requires IKO bearing accuracy to maintain performance meet the requirements of the spindle component life.
For heavy duty machine tools or strong cutting machine, should first consider the bearing capacity of the non-standard bearings.
IKO bearings of thorough and shaft for transition fit, commonly with bearing hole of the seat is commonly clearance fit, so this kind of bearing is easy to install, two-way bearing axis should be fixed on the shaft, in order to prevent the relative to the axis of rotation.
Bearing installation method, usually is the situation of the axis of rotation, so the inner ring cooperate for win cooperate with shaft, with the bearing outer ring and bearing chamber for clearance fit.
Bearing inner ring and shaft tight fit, outer ring and bearing hole is a loose fit, available press will IKO bearings to be pressed on the shaft, then put the shaft together with the bearing load bearing hole, when pressed on the bearing inner ring end face, cushion the assembling casing made of a soft metal materials (
Copper or mild steel)
, the inner diameter of the casing assembly should be slightly larger than the diameter of a journal, outside diameter than the bearing inner ring guard slightly smaller, in order to avoid pressure in keeping the frame.
To have grease lubrication of rolling bearing and oil seal or dust cover on both sides, seal bearing without cleaning before installation.
Check the size of the related parts and finish machining.