Ross Flex Tester
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The Ross Flex Tester evaluates the zigzag resistance and flex fatigue performance of sole materials. Pre-cut sole test pieces are mounted on the tester and subjected to repeated 90° zigzag bending. The notch growth rate is measured after testing to quantify the flex cracking resistance of the material, providing an objective assessment of sole durability.
Standards
(1) GB/T 2099-2007 — Footwear Test Methods
(2) ASTM D1052 — Standard Test Method for Flexing Endurance of Sole Materials
(3) ISO 5423 — Rubber and Plastics — Determination of Flex Cracking
(4) SATRA TM60 — Ross Flex Test
(5) HG/T 2411 / HB-T2411 — Footwear Sole Flexing Test Methods
(6) EN ISO 20344 — Footwear — Test Methods
Technical Parameters
| Item | Specification |
|---|---|
| Simultaneous measurement | 12 test pieces |
| Bending angle | 90 ± 2° |
| Speed | 0–100 r/min (switchable) |
| Controller | LED-SLD806 integrated display control |
| Hole punch diameter | 2.5 mm |
| Test mode | Automatic stop after preset cycles/time |
| Fixture features | Can test sole strips and individual pieces simultaneously |
| Zigzag shaft diameter | 10 mm |
| Sample method | Sole test piece |
| Sample size | 152 × 25 mm |
| Power supply | AC 220V, 10A |
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