The HZ-2690 shoelace loosening tester simulates vigorous, large-angle movement after a shoelace has been tied under constant tension. After a preset number of cycles, the operator checks the lace for loosening. Test data are retained during a power interruption or pause to support continuous testing.
Technical specifications:
1. Flexing angle: 40°–90°.
2. Frequency: adjustable from 50 to 300 cycles/min; fluctuation less than ±10 cycles/min.
3. Counter range: 1–999,999 cycles.
4. Stop-count error: ±5 cycles.
5. Weight: approx. 200 kg.
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