Applications:
Suitable for testing the tensile and torsional performance of high lock nuts, the test content includes locking torque, breaking torque, pre tightening force, and loosening torque. It is also suitable for testing the locking performance ofself-locking nuts, achieving conventional locking torque tests and torque loading tests for self-locking nuts.Total friction parameter μ, thread friction parameter μ, end face friction coefficient μ, tightening coefficient K, and other parameter

Product Detail

Features:

1.The main structure of the testing machine consists of a torque device, an axial force unloading device, and a fixed clamp head.

The testing machine is equipped with an axial force unloading device, which works by unloading the axial force without rotating

the nut sample after the axial loading force is applied;

2.The testing machine is easy to operate and has precise control; The axial force unloading device can move flexibly and is not

required for testing. The device can be moved to the back of the host; When conducting a high lock nut test, move the axial force

unloading device between two three jaw chucks and then clamp the sample for testing;

3. One time screw in and screw out test: screw the test bolt into the high lock nut locking position, then install it on the testing

machine, set the relevant parameters, and the testing machine will automatically perform the screw in and screw out test;

4.Twisting torque test: Screw the test bolt into the high lock nut locking position, then install it on the testing machine, set the

relevant parameters, and the testing machine starts the test. Twist the high lock nut driving part until it is turned off, and the test

is complete. The maximum torque when the high lock nut driving part is turned off during the test is read as the twisting torque;

5. Locking torque refers to the maximum torque during the screwing process, and the value range can be set;

6. Pre tightening force test: When the high lock nut is broken, the maximum force value displayed on the axial force channel of

the testing machine is the pre tightening force of the high lock nut;

7. Loosening force test: After testing the pre tightening force, remove the axial load by not rotating the nut. Then tighten the nut,

and the maximum torque required to rotate the nut is the loosening torque of the high lock nut.

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