High temperature deep groove ball bearing is a kind of bearing without internal keeper, only rolling body composition; 

because of high-temperature resistance, so it can meet the high-temperature working conditions of about 300 ℃, according to the production of ordinary grade tolerance, and the clearance is much larger than the ordinary bearings, so it is usually unsuitable for high-speed operation occasions, belongs to the high-temperature and low-speed bearings, usually can be operated for a long time in the speed of 200 rpm.