Dumbbell stretching fixture

The dumbbell stretching fixture is a specialized clamping tool for universal tensile testing machines. It is mainly used for tensile testing of non-metallic dumbbell shaped specimens such as rubber, plastic, thermoplastic elastomers, silicone, film, waterproofing membranes, etc. It is used to determine key mechanical indicators such as tensile strength, elongation at break, tensile stress, and tensile modulus of materials. It is widely used in factory quality inspection laboratories, third-party testing institutions, scientific research institutions, and other scenarios.
This fixture is compatible with domestic and international tensile testing standards such as GB/T 528-2009, ISO 37, ASTM D412, ASTM D638, etc. It can be used in conjunction with various electronic universal material testing machines and our dumbbell cutters of various specifications to achieve a complete testing process from sample punching to sample stretching.
Product Features
1. The main material is made of high-strength alloy steel, processed by overall quenching and tempering treatment, with good rigidity, not easy to deform, and stable accuracy after long-term repeated use.
2. Clamping structure: Adopting a self-locking eccentric wheel structure, the sample is automatically locked with increasing tension during the stretching process, effectively preventing the sample from slipping or slipping, reducing the adverse phenomenon of sample fracture at the jaws, and ensuring the authenticity and effectiveness of the test data.
3. Jaw configuration: The working surface of the jaw is treated with rolling anti slip treatment, and the clamping friction is sufficient; The jaw can be replaced to adapt to samples of different hardness and thickness, taking into account both soft rubber and hard plastic testing.
4. Flexible adjustment: It can adapt to various standard dumbbell samples and support clamping of samples with different widths and thicknesses; Sample installation is simple and fast, reducing operational difficulty and improving experimental efficiency.
5. Strong interchangeability: standard connection interface, compatible with mainstream tensile testing machines on the market; We also support non-standard customization, which can be customized according to the customer's testing machine interface and special sample size based on drawings and samples.
Applicable samples and materials
-Suitable for Type I, II, III, IV, V national standard dumbbell specimens, and also compatible with various ASTM, JIS, CNS standard dumbbell specimens
-Applicable materials: vulcanized rubber, thermoplastic rubber TPU,PVC, Plastic, silicone EVA, Non metallic materials such as plastic film, waterproofing membrane, and soft composite materials
Main testing items
Tensile strength, elongation at break, tensile stress, yield strength, tensile modulus and other tensile stress-strain performance tests.
Overview of our supporting products
Our company specializes in producing a complete set of laboratory sampling and testing accessories, including various types of tensile testing machine fixtures, test cutters, sample molds, punching machines, etc., with complete specifications.
The product includes dumbbell stretching fixtures, tearing fixtures, peeling fixtures, bending fixtures, compression fixtures, and impact fixtures; A full range of national/American/Japanese dumbbell cutters, pants tearing cutters, right angle tearing cutters, crescent cutters, waterproof special cutters, circular compression cutters, and various non-standard cutters with different shapes; Manual, pneumatic, hydraulic punching machine.
We can provide standard stock and also support non-standard customization based on drawings and samples, providing one-stop solutions to meet customers' needs for sample preparation and mechanical testing fixtures.