Flexometer | Bally Flex Tester
The Bally Flex Tester is designed to evaluate the flexural resistance of leather under continuous flexing. It measures the tendency of leather and other light materials to crack under repeated bending, simulating the crease formation in shoe uppers during walking. The 12-station model allows multiple samples to be tested simultaneously, and the instrument automatically stops when preset cycles are reached. The tester features a stainless steel structure, simple operation, and high reproducibility.
Application
The Bally Flex Tester is suitable for:
Assessing the flexural resistance of leather, artificial leather, and similar light materials.
Testing shoe uppers for propensity to crack under repeated flexure.
Pretreatment of specimens prior to water vapor permeability testing, especially for protective footwear.
Evaluating surface trims and coatings on polymeric or leather materials.
R&D, quality control, and laboratory testing in the footwear and leather industry.
Standards
The Bally Flex Tester complies with:
(1) EN ISO 20344:6.6 — Personal Protective Equipment: Test Methods for Footwear
(2) UNI 4818 — Polymeric Materials Coated Fabrics: Test Methods
(3) DIN 53.351 — Inspection of Leather, Artificial Leather, and Similar Flat Fabrics
(4) UNE/I.U.P.20, I.U.P.10+20 — International Leather Testing Standards
Parameters
| Item | Specification |
|---|---|
| Flexing Angle | 22.5° |
| Speed | 100 ± 5 cpm |
| Instrument Material | Stainless steel |
| Surface Treatment | Paint spraying |
| Number of Stations | 12 (standard), optional 24-station or low-temperature model up to -20 °C |
| External Dimensions (L×W×H) | 85.6 × 52 × 38 cm |
| Weight | 41 kg |
| Power Supply | AC 220V, 50Hz, 1A |
Features
Compact table-top design for easy installation and use.
Multiple stations (12 or 24) allow simultaneous testing of several samples.
Optional low-temperature models for testing up to -20 °C.
High automation: digital counter allows preset cycles, automatically stopping the test when complete.
Stable operation with minimal operator intervention.
Complements shoe upper flex testers by focusing on leather and light material flex resistance.
Accessories
(1) Standard flexing stations (12 or 24, depending on model)
(2) Digital counter for preset cycles
(3) User manual and calibration certificate
(4) Power cable
Test Procedures
(1) Mount leather or specimen onto the test station clamps.
(2) Set flexing angle and speed on the control panel.
(3) Configure the number of cycles using the digital counter.
(4) Start the machine; the tester will flex the samples continuously.
(5) The machine automatically stops when preset cycles are reached.
(6) Remove samples and inspect for cracks or deformation.
Maintenance Information
Regularly clean the flexing stations and clamps to remove dust or debris.
Inspect the stainless steel structure and moving parts for wear and lubricate if needed.
Verify the digital counter’s functionality and calibration periodically.
Check power supply and electrical connections for safety.
Keep the table-top surface and surrounding area free from water or corrosive materials.
FAQ
1. What is this product?
It is the Bally Flex Tester, used to evaluate the flexural resistance of leather and similar light materials.
2. What is this product used for?
It tests leather samples for their resistance to cracking under repeated bending, simulating shoe upper flexing during wear.
3. Why is this product important?
It ensures the durability and quality of leather in footwear and protective applications, preventing premature failure.
4. What industries is this product suitable for?
Footwear manufacturing, leather processing, protective footwear R&D, and laboratory quality control.
5. What types of this product are available?
12-station and 24-station models, including optional low-temperature variants (up to -20 °C).
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