It determines the resistance of a material to cracking or other types of failure at flexing creases. The method is applicable to all flexible materials and in particular leathers, coated fabrics and textiles used in footwear uppers.

The KR‑503 Bally leather flexometer is benchtop laboratory equipment for evaluating cyclic flex‑crack resistance of thin flexible materials including genuine leather, coated fabrics and shoe‑upper textiles. Following BS‑3144 and JIS‑K6545 testing methodology, prepared specimens are securely clamped on both inner and outer edges. The mechanism drives repeated reciprocal 22.5‑degree reverse folding motion. After completing predefined flex cycles, technicians examine test pieces for crease cracking, surface flaking and fibre rupture to judge material anti‑flex‑fatigue performance.
Two configurable variants are available: 6‑station and high‑throughput 12‑station models. This instrument is widely adopted in tanneries, footwear‑manufacturing plants, luggage‑goods factories, material‑R‑D labs and accredited third‑party inspection bodies for incoming‑material QC and new‑formula performance comparison for shoe uppers, apparel leather and bag‑making materials.


| Parameter Item | KR‑503 Standard Specification |
|---|---|
| Available Fixture Configurations | Model A: 6 groups; Model B: 12 groups |
| Standard Specimen Dimension | 70 × 45 mm |
| Reverse Folding Angle | 22.5° |
| Cycle Counter Range | LCD: 0 ~ 999 999 cycles |
| Overall Dimension(L×W×H) | 780 × 460 × 320 mm |
| Net Weight | Model A: 60 KG; Model B: 78 KG |
| Input Power Supply | AC 220 V, 50 Hz |
Compliance Standards: BS‑3144, JIS‑K6545


Flex‑crack‑resistance QC inspection for shoe‑upper‑leather, garment‑leather and bag‑making‑materials; compare anti‑creasing‑durability of different tanning and finishing solutions in new‑product‑development.
Evaluate cyclic‑bending‑fatigue performance of finished‑leather; optimise tanning‑agent and surface‑finishing‑process‑parameters.
Study crease‑cracking failure mechanism of leather and coated‑textile materials under repeated folding stress.
Carry‑out BS‑JIS‑standard‑compliant flex‑resistance verification for leather‑batch‑audit‑tasks.
Conduct formal Bally‑method flex‑resistance assessment and generate inspection‑documents for product‑certification‑audits.

Optional spare‑parts & custom‑options: extra replacement clamping‑jaws, custom‑voltage power‑supply‑adaptation for overseas‑markets.
We provide remote‑one‑on‑one operational guidance covering specimen‑clamping, cycle‑parameter‑setting and daily mechanical‑preventive‑maintenance. Spare‑parts stock includes fixture‑jaws and wearing‑components. Bulk‑order customers can apply for custom‑power‑supply‑voltage variants for overseas‑market deployment. Regional‑exclusive‑agent privileges contain priority‑production‑scheduling, OEM private‑branding‑services and complete‑set high‑definition product‑marketing‑image‑resources.
KR‑503 Bally Leather Flexometer | BS‑3144‑JIS‑K6545‑Compliant Leather‑Textile‑Cyclic‑Crease‑Crack‑Resistance‑QC‑Testing‑Instrument
BS‑3144‑JIS‑K6545‑Compliant,Bally‑Leather‑Flexometer,6‑Or‑12‑Station‑Optional‑Config,22.5‑Degree‑Reverse‑Folding‑Angle,70×45mm‑Standard‑Specimen‑Size,0‑999999‑LCD‑Preset‑Cycle‑Counter‑Auto‑Stop,Quick‑Release‑Stainless‑Steel‑Clamping‑Jaws,Anti‑Vibration‑Benchtop‑Structure,Leather‑Coated‑Fabric‑Shoe‑Upper‑Material‑Cyclic‑Flex‑Crease‑Crack‑Performance‑Evaluation
Keep hands away from moving folding‑fixture range during equipment‑running. Confirm specimens are fully clamped before starting test‑cycle. Reliable equipment‑grounding must be completed before power‑on. Periodically inspect transmission‑linkage and fixture‑fastening‑condition.
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