EN 
EN
Large and small wear rings of industrial pumps
Cast iron large and small mouth rings shall not have cracks, and The radial clearance between the wear ring and the impeller inlet or the shaft sleeve shall not exceed the specifications in the table. The surface roughness of the inner hole of the large and small mouth rings shall not exceed
| The clearance between the large and small wear rings (in the radial direction) is measured in millimeters | |||||||
| Inner diameter of wear ring | 80-120 | >120-150 | >150-180 | >180-220 | >220-260 | >260-290 | >290-320 |
| Assembly Clearance | 0.15-0.22 | 0.175-0.225 | 0.200-0.280 | 0.225-0.315 | 0.250-0.350 | 0.250-0.350 | 0.275-0.375 |
| Maximum wear clearance | 0.44 | 0.51 | 0.56 | 0.63 | 0.68 | 0.70 | 0.75 |
