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Bally Flexometer

Bally Flexometer2021-10-03T04:01:54+00:00

Project Description

Bally Flexometer

Bally Leather Flexing Tester China Manufacturer

Bally Flexometer is also called the Bally leather flexing tester, which is intended to determine the wet or dry flex resistance of leather and finishes applied to leather when subjected to a given number of continuous flexing within a period of time.

This digital flexometer is applicable to all types of flexible leather less than 3 mm in thickness and is widely used in leather, shoemaking, luggage, furniture and other industries. It not only complies with the international standards of ISO 5402-1, IULTCS/ IUP20-1, but also meets the JIS, DIN, ASTM and other test standards.

If you need a machine to determine the flexing resistance of the upper leather, you may consider another Vamp Flexing machine.


bally flexometer clamps

Test Principle

One end of the 70 mm × 45 mm specimen is folded longitudinally in half with the grain surface facing outwards and clamped firmly in the upper moveable clamp. The free corners of the specimen are dragged outward and downward around the upper grip to enable the grain surfaces to be attached together. The surface to be tested is outward. The free end of the sample is clamped perpendicularly in the lower fixed clamp to ensure that the leather is just taut.

After the motor is started, the upper clamp moves back and forth at a specified angle of 22.5° ± 0.5° and speed of 100 ± 5 cycles per minute. The test piece is examined for damage after a specified number of flex cycles or at regular intervals during the reciprocation.

Main Specifications

Model AT-L9002
Grips 12 sets, 6 sets, 24 sets optional
Specimen Size 70 × 45 mm
Flexing Angle 22.5° ± 0.5°
Flexing Frequency 100 ± 5 cpm (speed adjustable)
Counter Digital LCD, 0~999,999
Dimension 64 × 50 × 35 cm (W × D × H)
Weight 78 kg
Power Supply AC 220V, 50 Hz 1 phase (or specified)
Standard Accessories Press knife (70 × 45 mm), special spanner, operation manual
Optional Accessories Magnifier, desiccator, vacuum pump, distilled or deionized water, glass dishes, mandrel, metal clip, dtereomicroscope

Test Standards

  • BS-3144  Methods of sampling and physical testing of leather
  • JIS-K6545  Testing method for flexing endurance of light leathers and their surface finishes
  • ISO 5402-1  Leather-determination of flex resistance Part1: Flexometer method
  • QB/T 2714-2005  Leather-Physical and mechanical tests-determination of flex resistance
  • EN ISO 17694  Footwear-test methods for uppers and lining-flex resistance
  • EN 13512  Footwear-Test methods for uppers and lining-flex resistance
  • IULTCS/IUP 20-1  Leather-determination of flex resistance
  • SATRA TM55  Flexing resistance of upper materials-bally flexometer
  • EN 344-1  Safety protective and occupational footwear for professional use Part1 requirements and test methods
  • ISO 20344  Personal protective equipment-test methods for footwear
  • AS/NZS 2210.2  Occupational protective footwear test methods
  • ISO 32100  Rubber or plastics coated fabrics physical and mechanical tests-determination of flex resistance by the flexometer method
  • DIN 53351  Testing of artificial leather and similar sheet materials-permanent folding behavior (Flexometer method)
  • GE-24  Adidas & Reebok footwear test standard Flexometer test or Flexometer test after 7days Hydrolysis
  • ASTM D6182  Standard test method for flexibility and adhesion of finish on leather
  • GB/T 20991  Personal protective equipment-test methods for footwear

Bally Flexing Tester Features

  • This leather flexometer’s design and manufacturing strictly follow various international standards.
  • The outer box of the machine is formed from hard steel plates. The surface is treated with electrostatic spraying and anti-corrosion, and the structure is solid and durable.
  • The clamps are made of stainless steel, and the specimens are easy to be mounted into the machine with the help of the butterfly nuts.
  • This leather testing machine is an LCD with an English interface, sensitive buttons, a convenient and humanized control system, and a durable and precision motor.
  • The control system has functions of memory and automatic stop. After you stop the flexing test from checking the change of the sample, you can click start to resume the test. If you set the number of flex to 20,000, you do not need to stand guard over the machine. When 20,000 times are reached, the machine will automatically stop. It allows you to handle other things in the test.
  • We offer models of 6-station, 12-station and 24-station for you to choose from. The routine is 12 stations. The advantage of the 24-station machine is that you don’t need to purchase two machines if you want to test 24 samples simultaneously. It is efficient and cost-saving.
control panel

Control Panel

clamps of bally flexometer

Arrays of Clamps

bending angel

How to Prepare the Leather Samples for the Bally Flex Test?

  • Cut at least four pieces for the dry test and four pieces for the wet test by a press knife, sample size by 70 x 45 mm. (Sampling location: cut at least two test pieces with the long edge parallel to the backbone and two with the long edge perpendicular to the backbone).
  • For dry flex testing, condition the samples at a temperature of 20℃ and relative humidity of 65%.
  • For wet flex testing, place the samples in the glass dish, add sufficient distilled or deionized water, put the dish in the desiccator, and reduce the pressure to below 4 Kpa for 2 minutes. Restore to normal atmospheric pressure and repeat the pressure reduction twice. Remove the test piece, remove excess water using blotting paper, and then carry out the flexing test immediately.

Whats the Leather Flexing Test Procedure?

  • Mount the half-folded sample in the movable clamp. Make sure that the backside of the leather faces outward, then drag the free corners of the specimen outward and downward around the upper clamp to bring the inner surfaces together and load the free end in the lower clamp vertically. At this time, the leather should be just tight. Use the same mounting method for other specimens. On how to mount the sample, please refer to the figures below.
  • Start the machine, Preset flexing times of leather samples. The following is the recommended number of flex cycles:
    Dry flex: 500, 1000, 5000, 10000, 20000, 25000, 50000, 100000, 150000, 200000, 250000 cycles
    Wet flex: 500, 1000, 5000, 10000, 20000, 25000, 50000 cycles
  • After completing the number of flexing, stop the machine and remove the specimen, examine it in a good light by naked eyes and magnifier, Report any damage if it occurs and checks the intensity of the cracks if necessary.

The above is the test procedure overview. For detailed explanations, please refer to the required test standard.


How to Place an Order with AMADE TECH?2021-10-10T10:05:56+00:00

The ordering steps are not complicated. The overview is as follows:

  • 1) Please leave your inquiry directly in “Send an inquiry” on this page or find the contact information on the page of “contact us” to reach us by email or other instant message channels. Normally, you will hear back from our sales staff within 12 hours. (note: Writing the test standards to be applied and the product names to be tested in your inquiry is highly recommended. )
  • 2) The professional salesman from AMADE TECH will make a complete quotation sheet and a detailed product document, then send them to your mailbox left by you in the inquiry. Price, product parameters, payment terms, shipping terms, the detailed product description will be included in the quotation.
  • 3) After the terms of the deal are agreed upon between the buyer and the seller, the AMADE salesperson will issue a Proforma Invoice for you to arrange the advance payment. When the payment is reached, your order will be arranged for production. Goods will be prepared well within the promissory delivery time. Shipment will be managed immediately after the balance payment is received. Once you get the goods, the after-sales personnel from AMADE will guide you on how to install (If necessary) and use the machine, providing lifetime technical support.


If you have any queries, please feel free to contact us by [email protected], our sales team will respond soon.

What Are the Possible Damages to the Finish of Leather During the Bally Flex Test?2021-09-28T12:48:51+00:00
  • Change of shade or greying of the finish film exists, but no further breakage
  • Cracking or crazing of the finish
  • Loss of adhesion of finish to the leather, color changes
  • Loss of adhesion between finish costs, color changes
  • Powdering or flaking of the finish costs
What Are the Possible Damages to the Leather itself in the Bally Test?2021-09-28T12:50:15+00:00
  • Produces coarse grain lines(also called the pipey grain)
  • Loses pattern on the grain
  • Cracks on the grain layer
  • The fibre turns into powdered scrap
  • The fibres continue to be destroyed, and finally, the leather is completely broken
What Accessories Will Come with This Bally Flexometer?2021-10-03T01:38:14+00:00

The accessories are divided into standard accessories and optional accessories.

Standard accessories are included with the instrument and are free of charge. The names are as follows:

Press knife(70×45mm) 1 set

Special spanner 1 set

Operation manual 1 set

Optional accessories are the excess accessories chosen by you according to your test needs, and they need to be purchased at an additional cost. Please tell us the names of the specific accessory you need if necessary, and we will list them on the quotation. The options are as follows:



Vacuum pump

Distilled or deionized water

Glass dish


Metal clip


For more details on the bally flexing tester, feel free to contact us.

What’s the Significance of Performing the Flexometer Test?2021-10-03T01:33:29+00:00

Leather fatigue refers to the phenomenon that the leather and its coating undergo periodic deformation, which causes its physical and mechanical properties to decrease. This kind of repeated physical damage is lower than the damage strength of the leather.

When the leather is subjected to periodic stress or strain, the surface or the inside of the material produces slight damage. It then gradually develops into a macro crack until it breaks and finally makes the product lose its use function. The flexometer tester is intended to determine the flex resistance of leather.

Performing the bally flex test has great significance for the leather industry.

Guide Producers to Choose Suitable Materials

Testing the resistance of leather materials to flexing is the basic and essential step for manufacturers to commence new product research and development. It can help people in mastering the properties of materials to make the right decision on choosing appropriate raw materials.

Variously candidate materials are tested one by one in the laboratory. According to the data and results of the flexing test of different leather materials, the manufacturer can choose the proper materials. It can meet the quality requirements of the finished product without causing excessive performance.

Leather - AMADE TECH
Quality Control of AMADE TECH

Evaluate the Product Quality

Bally flex test allows you to understand and grasp the performance and quality of leather or leather products in a very short time. When a bunch of produced leather products are placed in front of you if you are asked to evaluate their quality, how would you judge?

It is a troublesome problem because we cannot directly obtain reliable assessment results simply by observing with eyes and touching with hands. The only way is to use an instrument similar to the Bally flexometer to take samples on-site for fatigue testing. With the support of test results of randomly selected samples, you can estimate whether the same batch of products meets the requirements. The flexing test is an extensively used method to judge the quality level of finished products like leather bags, leather shoes, leather suitcases etc.

Promote the Brand Image

Imagine that you are a leather clothing brand or manufacturer. If you indicate in your adverting that the leather raw materials you use have passed the Bally flex test. You can even put the testing pictures or videos in your ad copy. When these advertisements are launched, the audience will trust you more and have more confidence in your products than bragging about the quality simply? They will think that you are a brand with strict requirements on the quality of your products and a brand responsible to every customer. In this way, your brand image will get people’s positive affirmation virtually.


AMADE TECH is a professional supplier of various leather testing machines. Bally Leather Flexing Tester is one of our hot-selling instruments. Machines with 6 workstations, 12 workstations and 24 workstations are available to suit your different testing requirements.

Welcome to contact us via email: [email protected] or by other channels if you are sourcing the leather flex tester.

What Industries Will Use This Leather Bending Tester?2021-09-29T01:46:10+00:00

This Bally bending fatigue testing machine can be used in many different industries, including leather, clothing, shoes, furniture, luggage, decoration, automobiles and other industries.

Can the Reciprocating Motion of the Flex Tester Stop Automatically?2021-09-29T01:51:59+00:00

Yes, the machine will stop automatically once the preset number of cycles is reached. During the test, you don’t have to stay next to the machine all the time and stop the test manually. As long as the parameters are set, you can do your own thing freely. You can do the result evaluation directly after the bending of the sample is finished. This machine facilitates the work of testers and saves their time.

What Are the Counting Modes for Counting Leather Flex Cycles?2021-10-03T02:41:08+00:00

There are two counting modes for counting the flex cycles: One is the cumulative counting mode: counting from 1 to the preset number of cycles. The other is the countdown: counting from the preset number of cycles to 1. You can choose any method freely.

Are the Speed and Angle of Flexing Adjustable?2021-09-29T01:54:05+00:00

Yes, the flexing speed and angle are adjustable based on your testing requirements. The stated speed and angle in standards are (100 ± 5) CPM and 22.5° ± 0.5° respectively.

Why Do You Choose AMADE TECH as the Testing Equipment Supplier?2021-10-10T10:05:25+00:00

Competitive Prices

We are a professional Chinese manufacturer and supplier of testing equipment. As everyone knows, China is known as the world’s factory because it has the world’s most complete industrial categories, low labor costs and technological advantages. With a series of cost advantages and efficient management policies, our products have considerable price advantages among similar products. If you buy the same instrument in your home country, it may cost several times more.

Our low prices are not at the expense of quality, as we have skilled workers, excellent technicians and management personnel. High-quality materials are used in the manufacture of the machine. The core components of many products are from top international brands. Strict quality control ensures that products meet customer expectations.

competitive price from amade tech
testing objects of AMADE TECH

Abundant Products

Our testing equipment covers different industries. Each industry includes a variety of equipment to meet different testing needs. Sometimes, you may not just look for one device. It may take a lot of time and energy to find different instruments in different places.

Here at AMADE TECH, you can complete your purchase requirements in one stop. In addition to supplying our machines, we have a dedicated purchasing team to help you source any other equipment made in China at reasonable prices. Purchasing here will be an awesome and cost-saving experience for you.

Thoughtful Service

From pre-sales to after-sales, we have dedicated sales and technical personnel at your side at any time to answer various questions for you and respond to your various needs.

When you receive our product, a detailed operation manual will be attached to guide you to operate this machine. The technical team is available to assist you for any requirements. We provide 12 – 18 months of warranty and lifetime technical support for instruments. At any time, we are able to offer help on the operation, use and maintenance in various forms. Within the warranty period of the instrument, if non-human reasons cause any quality problem, we will solve it for you free of charge. Choosing AMADE TECH means choosing to be at ease.

Amade tech customer service
When I Receive This Tester from Amade-tech, How Do I Install and Use It?2021-10-09T09:11:07+00:00

It is ready to use when you receive the goods. This machine will be installed, debugged and calibrated well before it leaves our factory. When you first use our machine, you can easily complete the testing by referring to our user manual.

How to Pack This Leather Flexing Tester?2021-09-29T06:52:04+00:00

The Tester will be packed by a export wooden case. It can better protect the machine from being damaged during the transportation.

By What Shipping Method Do You Ship? And How Long will it take?2021-10-09T09:08:45+00:00

Because this device is not large in weight and volume, international express is what we recommend most. Shipping charges will be included separately in the quotation sheet.

The shipping procedure is simple. We will be in charge of all affairs in our country and prepare all documents required for shipment. All you have to do is to wait until delivered to your hands.

The shipping time by the International Express will be about 3-7 working.

If you like other shipping methods like by boat or air. No issues. We fully support your preference.
Please advise your requirements in advance, and we will propose a corresponding shipping solution to meet your request.

For any questions, contact us at any time.

When Can I Expect My Order After Placing an Order?2021-10-09T09:09:31+00:00

We can’t bear to let you wait too long after placing an order. Under normal circumstances, your machine will be shipped within 2 – 3 working days after your payment is reached. Adding the transit time, it will take about 10 days to receive your goods in total.

What’s Your After-sales Policy?2021-10-10T10:07:24+00:00

The moment you receive the machine, our after-sales staff will be there for you at any time. In addition to providing detailed operation manuals to guide you on how to use the machine for the first time, if necessary, we will also provide immediate support and help in the form of videos. If you encounter any problems during the use of the instrument, please get in touch with us immediately. We will respond within 2 – 4 hours and send the solution to you within one working day.

We provide 18 months of quality assurance and lifetime technical support. During the warranty period, if there is any quality problem caused by non-human reasons, AMADE TECH will solve it for you free of charge.

Send an Inquiry

Please feel free to contact us for more details on the product, price, lead time, payment terms, shipment methods, etc. Amadetech sales specialists will respond within one working day.

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