China Bally Flex Tester ULB-F11 - Reliable Leather Quality Assurance from Top Suppliers and Factory
Application
Bally leather flexing tester: to determine 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.
Bally Flex Tester Feature
The test specimen is folded in half then one end is secured in a clamp. The test specimen is then turned inside out and the free end secured in a second clamp at 90 degrees to the first. The first clamp is repeatedly oscillated through a fixed angle at a defined rate causing the test specimen to flex. At set intervals the number of flexing cycles is recorded and the damage to the test specimen is visually assessed. The test can be carried out with wet or dry test specimens at ambient.
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 ) | 700x300x340mm | 780x450x360mm | 1100x510x220mm |
| 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 (FAQ)
What is the primary application of the Bally leather flexing tester?
It is designed to evaluate the resistance of flexible materials, particularly footwear upper leathers, coated fabrics, and similar textiles, to cracking or other structural failures at flexing creases.
What standard test methods does this machine support?
Depending on the upper grip configuration, it supports major international standards including ISO 5402-1, SATRA TM 55, EN 13512, ISO 32100, and ASTM D 6182.
How do I choose between A Type and B Type upper grips?
A Type grips are designed for standards such as SATRA TM 55 and ISO 5402-1, while B Type grips are intended for compliance with ISO 32100 and ASTM D 6182.
Can the test be conducted under wet conditions?
Yes, the flexing test can be performed using either wet or dry test specimens at ambient temperatures.
What model configurations are available?
The tester comes in three configurations: ULB-F11-6 (6 sets of positions), ULB-F11-12 (12 sets of positions), and ULB-F11-24 (24 sets of positions).
What is the standard sample size required for testing?
The standard required sample size for the flexing test is 70 ± 5 mm by 45 ± 5 mm.