| Copper profile material | Electrolytic copper with silver content 0.03%, 0.08%, 0.10% or more | |
| Molding material | Moulding compound (CN6575, PM6630, PM6830, PM6432, WH5515 etc.) and Mica | |
| Insulation material | Mica | |
| Process type | Segmented type, cage type, hook type, riser type, cold forging type, planner type | |
| Reinforced rings | Steel or fiberglass ring | |
| Bush material | Brass, steel, spring bush | |
| Key inspection | Spin test speed | |
| Roundness deviation, bar to bar deviation before and after spin test | ||
| Bar to bar test voltage | ||
| Bar to bore test voltage | ||
| Broken test speed | ||
| Shaft fitting test | ||
| Hook peeling force | ||
| Balancing | ||
| Parameter description | Specifications of commutator | Technical parameter |
| Overspeed test | O.D less than 25.5mm | Room temperature:44000RPM, after 10min, running deviation between segments:0.003, O.D changes:0.007mm |
| Heating 250°C:44000RPM, after 10min, running deviation between segments:0.003, O.D changes:0.007mm | ||
| O.D 25.5mm-28.5mm | Room temperature:44000RPM, after 10min, running deviation between segments:0.003, O.D changes:0.007mm | |
| Heating 250°C:38000RPM, after 10min, running deviation between segments:0.003, O.D changes:0.007mm | ||
| O.D 28.5mm-32.5mm | Room temperature:37000RPM, after 10min, running deviation between segments:0.003, O.D changes:0.010mm | |
| Heating 250°C:35000RPM, after 10min, running deviation between segments:0.003, O.D changes:0.010mm | ||
| O.D 32.5mm-38.5mm | Room temperature:34000RPM, after 10min, running deviation between segments:0.003, O.D changes:0.010mm | |
| Heating 250°C:32000RPM, after 10min, running deviation between segments:0.003, O.D changes:0.010mm | ||
| Insulation with standing test | Various specification | Room temperature: between shaft hole and commutator segment ≥150MΩ |
| Heating:140°C within 1h, between shaft hole and commutator segment ≥100MΩ | ||
| I.D tolerance of commutator | Various specification | With bushing H7 / Without bushing H8 |
| AC frequency | Various specification | 50HZ / 60HZ |
EN
