Spring Testing Machine

Jinan Kason: Leading Professional Spring Testing Machine Manufacturer and Supplier in China

We have specialized in developing and manufacturing metal, non-metal and composite material testing equipment for many years and have served customers from more than 150 countries and regions. As a professional testing equipment factory, our advantages are specifically reflected in

Complete Production Facilities

Our company has production and office facilities such as scientific research office building, electrical installation and commissioning building, final assembly workshop, heavy machine workshop, machining workshop, blanking workshop, painting workshop, measuring room, product showroom, etc.

Diverse Product Types

Our main products include hydraulic universal testing machines, electronic universal testing machines, compression testing machines, spring testing machines, impact testing machines, torsion testing machines, hardness testers, and testing machine accessories.

Rich Service Experience

Our products are exported to international markets such as Germany, the United States, Spain, Australia, Italy, South Africa, South Korea, Pakistan, Malaysia, Thailand, and Singapore. We have a professional pre-sale, sales and after-sales service team to provide strong technical support and professional services to domestic and foreign users.

Professional Qualification Certification

Our company has successfully passed ISO9001 quality system, ISO14000 environmental management system, occupational health and safety management system, and CE certification. The company has obtained a total of 22 authorized national patents, including 2 national invention patents, 13 national utility model patents, and 7 national design patents.

Computer Controlled Spring Torsion Fatigue Testing Machine
This microcomputer-controlled spring torsional fatigue testing machine is mainly used for torsional life testing of various torsion springs, scroll springs and spring assemblies.
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Automatic Spring Torsion Fatigue Testing Machine
This machine is mainly used for static torsion testing and torsion fatigue testing of various shaft parts, rubber products, springs, etc.; the tested specimens are installed between the fixtures...
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Computerized Spring Tensile And Compression Testing Machine
Testing machine is based on the following standards: JB/T 7796-2005 Spring tension and compression testing machine standard, Mainly used for Spring Tensile and compression strength test
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Digital Display Spring Fatigue Testing Machine
This machine is mainly suitable for axial fatigue life test of various spiral cylindrical springs, gas springs, elastomers, elastic components and other components.
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Computer Control Fatigue Testing Machine
HSFT-W computer controlled spring fatigue testing machine mainly consists of software control system, load displacement acquisition system, motor drive system and eccentric drive system.shutdown...
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Automatic Spring Torsion Testing Machine
This machine is mainly used for torsion test of various torsion springs, scroll springs,Flat Spiral Spring and other elastic torsion parts. Measure the torque of the spring at a certain rotation...
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Computerized Torsion Spring Tester
The Computerized Torsion Spring Tester is designed for easy operation and user-friendly interface. With the touch of a button, you can quickly and accurately test the load-deflection behavior of...
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Manual Spring Torsion Testing Machine
NDS series digital torsion spring tester is a kind of intelligent multi-functional measuring instrument used for testing and inspection of torsion spring. With simple operation, high precision,...
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Manual Spring Compression and Extension Testing Machine
As a special-purpose instrument, this testing machine is used to test amount of deformation and characteristic of load relation of extension and compression springs. It can be applied to the...
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Digital Display Single Column Spring Testing Machine
This series testing machine is mainly used for tension spring, compression spring, saucer reed, tower spring, leaf spring, clip spring, flat spring, cpmposite spring,gas spring, mould spring,...
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Spring Compression and Tensile Testing Machine
The machine was designed adopted the advanced experience of foreign manufacturers. The structure and rigidity of the machine are designed and manufactured for the precision inspection for small...
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Brief Introduction to Spring Testing Machines

Spring testing machines, also known as spring testing devices or spring test machines are used to test the quality performance of springs and ensure that they meet the specified requirements. These testing machines come in various designs and sizes and can test different types of springs. They can provide the highest level of accuracy and repeatability for testing springs with extremely tight tolerances.

Key Components of Spring Testing Machines

Load frame

The load frame is the main structure of the spring tensile testing machine and houses all important components. It is designed to withstand the forces exerted during tensile strength testing.

Crosshead

The crosshead is a removable component used to secure the jig or fixture used to hold the material being tested. It applies force to the sample in a controlled and uniform manner.

Hydraulic Bending and Re-bending Testing Machine

Clamps/Fixtures

These are attachments that securely hold the ends of the test specimen during testing. The choice of fixture depends on the type of material being tested (e.g., flat, round, or threaded specimens).

Load Cell

A load cell is a sensor that measures the force applied to a sample. It converts the applied force into electrical signals that are recorded by the testing machine's data acquisition system.

Extensometer

An extensometer is an optional accessory used to measure the elongation or strain of a sample during testing. It provides valuable data for constructing stress-strain curves.

Three Cylinders Vertical Hydraulic Bending Testing Machine

Operational Controls

Allows operator to manually control certain features of the spring testing machine outside of the software. This exists for ease of use and safety purposes, allowing access to an emergency stop switch, for example.

Advantages of Spring Testing Machines

Reliable Force Applying Mechanism

The spring tester is equipped with a reliable force-applying mechanism that can apply various loads to the spring under test. This can be accomplished by various methods, such as hydraulic, pneumatic or electronic force application systems, depending on the specific design of the machine.

Displacement Measurement

In addition to measuring the applied load, a spring testing machine also records the displacement, or deformation, of the spring. This data helps evaluate the elasticity of the spring and how it behaves under different loads.

Accuracy and Precision

These machines are designed to provide accurate and precise measurements. They often employ advanced sensors and data acquisition systems to ensure reliable and repeatable results.

Data Analysis

Modern spring testers often come with data analysis software that allows the user to graphically display and analyze test results. This helps to understand the performance characteristics of the spring, including stress-strain relationships, stiffness and fatigue characteristics.

Versatility

Spring testing machines are versatile and can be used to test various types of springs, including compression springs, tension springs, torsion springs, and more. They can also accommodate springs of different sizes and shapes.

Security Function

Spring testing machines often have safety features to protect the operator and prevent damage to the equipment. These features include emergency stop buttons, safety enclosures and load limiting systems.

Spring Testing Machines Parameters (Take Computerized Torsion Spring Tester as an Example)

Model	KNDW-100	KNDW-200	KNDW-300	KNDW-500
Type	Horizontal
Max test torque	200Nm
Test range	1%-100%FS
Min torque reading	0.1Nm
Resolution of torsion angle	0.1°
Test rotation angle	0~±360°
Accuracy of testing force	±1%
Relative error of torque zero	±0.1%
Maximum height of the sample	120mm
Distance between the force plate and the torque plate	0~200mm
Diameter of torsional plate	120mm
Power supply	AC 220V±10% 50Hz
Size	About 1500400980mm
Weight	About 300kg
Grade of testing machine	Grade 1

Computer Control Fatigue Testing Machine

Possible Factors Causing Differences in Spring Testing Machine Results

Variation in spring load test results is composed of four main factors: length measurement effects, load cell effects, machine calibration, and spring effects.

Length Measurement Effect

This is an error caused by the deflection of the length measurement system and the load frame. All measurement systems have errors, and different spring testing machine manufacturers may use length measurement systems of varying accuracy. For example, the length encoder used in our range of test machines has a resolution of 0.005 mm and an accuracy of ±0.003 mm. But when they are bolted into a test frame, accuracy decreases due to imprecise deflection compensation and nonlinear deflection. Therefore, the actual accuracy on our machines is ±0.01 mm. On high stiffness springs, a resolution of 0.005 mm can produce significant load changes.

Load Cell Effect

The type of load cell used in a spring tester is important because many types of sensors are severely affected by non-axial forces and moments. No matter how carefully a load cell is selected, all sensors will exhibit some effects to a greater or lesser degree. Therefore, it is best to position the spring in the center of the test bench. Quantifying the effects of load cells is difficult, but they can be significant and cause a few percent difference in load measurements.

Machine Calibration

For spring testing, the machine load cell should be accurate to ±0.5% of reading or better. This means that if one company uses a machine with a higher reading and another company uses a machine with a lower reading, it could see a load difference of 1%. Human error may be a factor where the length system was not adjusted or calibration was not completed, in these cases we found errors greater than 0.1 mm.

Spring Effects

End verticality has a considerable effect on spring loading, as reversing it will often give different test results. This means that unless a spring is designed to naturally only test in one direction, it is recommended to test in both directions. The springs should also be placed on the test bench in the same orientation (i.e. the ends are in the same position) to minimize possible variation. Laterally stiff springs produce high lateral forces that affect the load cell and frame. Springs themselves are not always stable items and will recover when unloaded or relax when stored under compression. Therefore, load may increase or decrease due to delays between each company's tests.

Common Standards for Spring Testing Machines

Springs have individual design specifications derived from the materials used, manufacturing methods and surface treatments. Each of these features has its own industry standard specifications. But the only way to ensure performance is within specifications is to test according to standard test methods for springs.

ASTM A125-96

Standard Specification for Heat Treated Helical Steel Springs.

ASTM F1566-09

Evaluation of inner springs, box springs, mattresses, or mattress sets.

ASTM F1085-10

Standard specification for mattresses and box springs for marine berths.

BS 1726-1

Guide to specified methods, tolerances and testing for compression of cylindrical coil springs made of round wire and rods.

BS 1726-2

Guide to specified methods, tolerances and testing of tensile cylindrical coil springs made of round wire and rods.

BS 1726-3

Guide to specified methods, tolerances and testing for torsion of cylindrical coil springs made of round wire and rods.

DIN 2192

Flat springs - Requirements and tests.

JIS B 2704

Helical compression and tension springs - Design requirements, performance test methods.

Maintain a Spring Testing Machine for Optimal Performance

Spring testing machines can evaluate the mechanical and physical properties of various types of springs. To ensure it operates optimally, you must know how to identify and resolve common problems, make configuration and calibration adjustments, and perform preventive maintenance.

Automatic Spring Torsion Testing Machine

Identify Problems in the Test Machine

Early detection of problems in test machines is critical to avoid erroneous results and ensure data accuracy. Some key indicators of problems include malfunctions, inconsistent results, changes in force or torque data, unusual noises, and errors in the display or interface.

Basic Maintenance of Spring Testing Machine

If problems are discovered in a test machine, it is important to resolve them correctly to keep the machine in top condition and ensure accurate results.

Replace Damaged Parts

When damaged parts are detected, it is crucial to replace them to ensure proper operation of the machine. Identify the affected part and obtain the appropriate spare part, following the manufacturer's instructions and using the appropriate tools for precise, safe replacement.

Adjust Configuration Parameters

Proper configuration of machine parameters is the basis for obtaining accurate results. According to the test needs, consult the instruction manual and use the manufacturer's recommended software to check and adjust parameters. Be sure to follow all instructions to avoid errors.

Calibration and Results Verification

Calibrating spring testing machines is critical to ensuring reliable and accurate results. Calibrate the measurement system according to the manufacturer's instructions and verify that the results are within the specified tolerances. If necessary, make adjustments and retain calibration records for future reference.

Preventive Maintenance

Preventative maintenance is critical to keeping test machines in optimal operating condition and avoiding costly problems. It can extend the life of machinery while reducing maintenance costs. Preventive maintenance also improves performance by avoiding unnecessary production downtime.

Our Certifications

Our company has obtained the following certificates

Factory Pictures

Below are photos of our factory for you to view

Ultimate Guide

Q: How to test a spring?

A: An example of a fairly simple spring test is the compression test, which determines the free height of the spring, or the length of the spring when a very small force is applied, and then compresses the spring to a known percentage of that height, such as 75%, 50%, etc., and measure the force required to achieve these targets.

Q: What is the ASTM standard for heat-treated steel spring testing?

A: ASTM A125 standard test method is considered to be the most proficient testing procedure for helical heat-treated steel springs. This testing method can help the manufacturer in deciding the production criteria and deliver best results to the clients.

Q: What is measured on a spring tester?

A: The force gauge gives the force applied, the displacement sensor on the side shows the flexion or height measured under load.

Q: What tests can be performed using your spring testing machines?

A: Our spring testing machines are capable of performing a variety of tests, some of the most common tests are: pull test, bend test, compression test.

Q: In which stage is the spring testing machine usually used?

A: Spring testing machines are used as part of the QA or research and design phase of various spring products. It can return accurate measurements of the properties of the material being tested, providing data to manufacturers or designers as they need to evaluate a sample's suitability for its intended application.

Q: Why is spring testing and certification important?

A: Mechanical systems that rely on springs can pose significant safety risks if the springs fail. For example, if a spring in a vehicle's suspension system fails, it can cause a loss of control and possibly an accident. Likewise, if a spring in an industrial machine fails, it can damage the equipment and pose a danger to workers.

Q: What are the benefits of spring testing?

A: Regular spring testing and certification can help ensure optimal performance and safety of spring-dependent mechanical systems, reduce the risk of spring failure and downtime, extend spring life, and comply with industry-specific safety standards and regulations.

Q: What types of springs require a spring testing machine for testing and certification?

A: Springs used in various mechanical systems such as automobiles, aircraft and industrial machinery require testing and certification to ensure their safety and performance. The type of spring and the industry in which it is used may determine the specific safety standards and applicable regulations.

Q: How often should springs be tested?

A: The frequency of spring testing and certification depends on the specific industry and the intended use of the spring. However, it is generally recommended to test with a spring testing machine periodically or when signs of wear are evident.

Q: What types of spring testing are available on your spring testing machine?

A: Some of the most common types of spring testing include spring load testing, spring fatigue testing, spring performance testing, and spring failure analysis

Q: Can spring testing be done in-house?

A: If you purchase our spring testing equipment and have the necessary expertise and knowledge of industry-specific safety standards and regulations, you can perform spring testing and certification in-house.

Q: What are the best practices for spring testing machine maintenance and inspection?

A: To ensure the longevity and optimal performance of your spring testing machine, you should follow some spring maintenance and inspection best practices. These practices include regularly inspecting parts for wear, corrosion, or damage and properly lubricating springs to minimize friction and wear. Replace parts at recommended intervals or when signs of wear are apparent to prevent damage or deformation.

We're well-known as one of the leading spring testing machine manufacturers in China. Please rest assured to buy high quality spring testing machine for sale here from our factory. For price consultation, contact us.

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