更换装在轴承座里的旧轴承是比较困难的,使用图示这种开槽心轴就方便多了。心轴由冷轧钢棒料制成,其一端直径稍大于要拔取轴承的内径,另一端车削到约比轴承内径小0.001～0.002英寸,在棒料轴向钻一个精密孔,在车好的端面上钻60°锥口孔并用锯齿刀开割一条槽,长约1英寸,然后,在六角头螺栓或内六角螺栓头下面车成60°角,螺栓的长度要足以能穿过整个心 Replacing the old bearings housed in the bearing housings is more difficult and the use of such slotted spindles is much more convenient. The mandrel is made of cold-rolled steel bar stock, one end of which is slightly larger in diameter than the inner diameter of the bearing to be withdrawn and the other end of which is turned to about 0.001 to 0.002 inch smaller than the inner diameter of the bearing. A precision hole is drilled axially in the bar, Drill a 60 ° taper hole in the end face and cut a groove about 1 inch with a serrated knife. Then make a 60 ° angle under the head of hexagonal or hexagonal head bolts, long enough to pass through the entire heart