目前，用户在输送机托辊的选型上普遍存在问题：当前市场上可供选择的托辊的种类繁多，性能差异很大，从寿命上看有的托辊运转几天甚就报废，而有的可正常运转十几年，当然其价格差别也比较大，这给用户的选择带来困难；如何选择合适的托辊降低输送机价格呢？ At present, the user is common on the conveyor roller selection problem: selection of roller on the current market a wide range of performance difference is very big, look from the life of some rollers work days are discarded, while others can work more than ten years, and of course the price difference is bigger, also it gives the user the choice of difficult; How do you choose the right roller to lower the price of the conveyor? 首先托辊的加工工艺对托辊的性能颇为重要，托辊的加工精度主要指外壳及托辊两端内孔的同心度以及各零件轴向尺寸的加工精度。若同心度太差，会造成滚动轴承咬死、增加阻力，降低使用寿命；若零件的轴向尺寸误差太大，会形成较大的轴向间隙，导致轴向窜动，破坏润滑和密封；若安装质量不好，将发生跑偏、咬卡、加剧磨损等，大大降低托辊使用寿命。 The processing technology of the first roller on the performance of the roller are important, the machining precision of roller mainly refers to the shell and the rollers on both ends of the inner hole concentricity and the axial dimensions of each parts machining accuracy. If the same degree is too low, it will cause the rolling bearing to die, increase resistance, and reduce the service life. If the axis of the part is too large, it will form a large axial clearance, causing the shaft to run and destroy the lubrication and seal. If the installation quality is not good, the running bias, the bite card, the aggravating wear, etc., greatly reduce the life of the roller. 托辊制造工艺也会影响托辊动载荷，产生动载的基本原因是托辊外壳壁厚不等和外壳径向跳动引起的质量不平衡。 The roller manufacturing process can also affect the load of the roller, which is the basic cause of the dynamic load, which is the uneven quality of the outer wall of the roller shell and the radial pulsation of the shell.