As the key part of the punch bearing housing lathe, the spindle property will directly impact the rotary precision, speed, rigidity and noise etc., as well as the processing quality of the workpiece. For mesh bed spindle, the bearing precision should be ISOP5 or above (P5 or P4 is the grade of ISO precison), while for CNC lathe, high speed and high precision lathe, the spindle bearing should select ISOP4 or above. The spindle includes the angular contact ball, tapered roller, P4, for deep groove ball bearing, the size precision should be P0, from low to high, and should equip with high property. How to choose the bearings of the lathe?
Spindle bearing
With the promotion of the conveyor roller industrial structure upgrading of S-type joint bearing, in CNC field, the ratio of cnc lathe with cylindrical roller bearing is increasing. The heavy lathe product is mainly used in state energy (thermal power, hydropower, nuclear power, wind power), shipbuilding, construction machinery, metallurgical, NSK aerospace bearings, industry, transportation (railway, automobile) and other main pillar industries and national key engineering projects service, the ratio of high-end CNC lathe (like heavy and intelligent lathes) is also gradually increasing. The whole lathe industry expresses the trend of industrial structure upgrading, and the national key engineering projects provide heavy lathe with wide market of cylindrical roller bearing.
Lathe tool industry is the key part of conveyor pulley thrust bearing in mechanical equipment industry, and in order to meet the processing of the above structural parts, the workload of the lathe is about 40%～60%INA of the total workload, and the modern lathe is developing to the "high speed, precise, composite and intelligent" direction. The development level of lathe industry is commonly known as the symbol of that of the national industry, and with the growth of the modern manufacturing industry, it brings many challenges to the bearing seats of lathe field, which makes it with the decisive roller bearing housing function in the national economy. Currently the constant growth of new material and technique ensures higher requirements of the lathes.