THREADED-END AND BUTTON-END GRIP BODIES

Button-end holders are engineered to expedite production floor testing. The split-sleeve design eliminates the need for specimens to be threaded into the holder. The open front aspect also increases the ease of loading each specimen, as the operator has a full view of specimen position throughout the loading procedure. The contoured edge of each split-sleeve fits securely around the button head of shoulder-end specimens, and the external collar slides over the split sleeves and locks in place. This ensures quick, easy, secure and consistent specimen placement for each test.

The purely mechanical operation and solid steel construction of all parts ensure durability and require minimal maintenance. Additionally, the split sleeves are hardened, increasing ruggedness. Threaded-end holders mount directly onto the threaded portion of spherically-seated tension rods. A threaded-end specimen is then fitted into each threaded-end holder. Once the specimen is positioned correctly in the two threaded-end holders, the operator may begin the test.

Principle of Operation

The button-end holder mounts directly onto the threaded portion of spherically-seated tension rods. After placing the specimen into the open split sleeve, the operator places the second split sleeve over the specimen and brings the external sleeve over the assembly. As the operator brings the external sleeve over the specimen and twists it, the mechanism locks the specimen into place. As the pre-test load force is applied to remove slack between the grip and specimen, the spherically-seated tension rods automatically straighten the specimen if it is placed off-center. This feature ensures the tension from the frame is applied to the whole of the specimen. Shoulder-end holders are designed to comply with ASTM E8, ASTM A370, or ASTM A48, and other international standards, and can be made to customer specifications. The threaded-end holders mount directly onto the threaded portion of spherically seated tension rods. A threaded-end specimen is then fitted into each threaded end holder. Once the specimen is positioned correctly in the two threaded-end holders, the operator may begin the test.

Application Range

• Type of loading: Static tension.

• Specimen material: Wide variety of metals, including, but not limited to: steel, cast iron, aluminum, titanium, and brass.

• Specimen types: Machined, shoulder-end specimens; machined, threaded-end specimens. Other diameters may be

• available upon customer request.

Safety Advice

Review safety note on page 234