拖拉机和农具经常在田间作业,条件恶劣,负荷较重。其轴承往往磨损严重,轴承保持架常有损坏,有时部分滚珠会破裂,甚至脱离轨道,造成轴承内、处圈分开,内圈包在轴颈外,而外圈却卡在盖或者座内。由于轴和内圈、或者盖(座)和外圈配合很紧,有时因生锈而粘结牢固,如果没有拆卸槽,又没有气割设备,为了更换轴承而要拆卸内、外圈 Tractors and implements often operate in the field, in harsh conditions and with heavy loads. The bearing is often worn seriously, often bearing cage damage, and sometimes part of the ball will rupture, or even from the track, resulting in bearings, at the ring apart, the inner ring wrapped in the journal, while the outer ring is stuck in the cover or seat. As the shaft and the inner ring, or cover (seat) and the outer ring with a very tight, sometimes due to rust and strong bonding, if there is no removal slot, and gas cutting equipment, in order to replace the bearing and to be removed inside and outside the ring