China Bally Flex Tester ULB-F11: Essential Leather Flexing Tester for Quality Assurance by Reliable Suppliers and Factory
Application
Bally Flex Tester Feature
Standards
| Equipped with A type of upper grips. |
SATRA TM 55; IULTCS/IUP 20-1; ISO5402-1; ISO 17694 ; EN 13512 ; EN344-1 section 5.13.1.3 and annex C; EN ISO 20344 section 6.6.2.8; GB/T20991 section 6.6.2.8; AS/NZS 2210.2 section 6.6.2.8; JIS-K6545; |
| Equipped with B type of upper grips. |
ISO 32100; DIN53351; GE-24; ASTM D 6182 |
Key Specification
| Model | ULB-F11-6 | ULB-F11-12 | ULB-F11--24 |
| Test position | 6 Sets | 12 Sets | 24 Sets |
| Type of upper grips | Please choose the suitable type as below chart of ‘Standard’. | ||
| Flexing angle | 22.5° ± 0.5° | ||
| Flexing speed | 100 ± 5 cycles / flexes per minute | ||
| Counter | LCD 0 - 999,999 (adjustable) | ||
| Sample size | 70 ± 5 x 45 ± 5 mm | ||
| Power supply | 1∮AC 220V 50/60HZ | ||
| Dimensions (L x W x H) | 700 x 300 x 340mm | 780 x 450 x 360mm | 1100 x 510 x 220mm |
| Weight | About 45kg | 60kg | 70kg |
Accessories
| Standards Accessories | Power line *1pc |
| Optional Accessories | Hydraulic Rocker Pressure Tester (Cutter: 70 ± 5 x 45 ± 5 mm) |
Frequently Asked Questions
What materials can be tested with the Bally leather flexing tester?
The Bally leather flexing tester is designed for all flexible materials, particularly leathers, coated fabrics, and textiles used in footwear uppers.
What is the testing principle of the Bally flex tester?
The test specimen is folded and secured in two clamps at a 90-degree angle. The first clamp repeatedly oscillates at a fixed angle and defined rate to flex the specimen. Damage is then visually assessed at set flexing cycle intervals.
Can tests be performed under wet conditions?
Yes, the flexing test can be conducted using either wet or dry test specimens at ambient temperatures.
How do I choose between Type A and Type B upper grips?
You should choose the grip type based on the testing standards you need to follow. Type A complies with standards like SATRA TM 55, ISO 5402-1, and EN ISO 20344. Type B is suitable for standards such as ISO 32100, DIN 53351, and ASTM D 6182.
What are the available model configurations and test positions?
There are three models: ULB-F11-6 (with 6 test positions), ULB-F11-12 (with 12 test positions), and ULB-F11-24 (with 24 test positions).
What optional accessories are compatible with the tester?
An optional Hydraulic Rocker Pressure Tester with a specimen cutter size of 70 ± 5 x 45 ± 5 mm is available for sample preparation.





