传输带上用的驱动滚轮和导向滚轮,采用空芯管滚轮,和实芯滚轮比较,具有省钢材、重量轻、刚性好等优点。制做空芯滚轮的关键,在于保证两端轴颈有一定的同心度。在没有大型平台和专用设备的情况下,根据我们的实践经验,按照以下工 Belt drive roller and guide roller, the hollow tube roller, and solid wheel compared with the provincial steel, light weight, good rigidity and so on. The key to making hollow-core rollers is to ensure that there is some concentricity at both ends of the journal. In the absence of large-scale platform and special equipment, according to our practical experience, according to the following workers