The Shandong Huayan Nut Locking Performance Testing Machine is mainly used to detect the maximum torque (or moment) when a self-locking nut is screwed in for the first time, and the minimum torque during the final unscrewing after 5 (or 15 or other) cycles of screwing in and out. Controlled automatically by a computer with motor loading, it automatically measures the maximum and minimum torque. The number of screwing cycles can be freely set, and test curves are also provided. It is widely used in factories, mines, aviation, aerospace, scientific research institutes, quality inspection departments, and other manufacturing and user departments for testing the locking performance of self-locking nuts.

Applicable standard:
JB/T 9370—2007 "Technical Specifications for Torsion Testing Machines"
GB1339 Self-locking Hexagon Nut
GB943 "Technical Specifications for Self-locking Nuts"
HB5643 "Test Requirements and Methods for Self-Locking Nuts"
Product Features:
1. Digital display of torsional torque and angle;
2. The machine has a torque-holding function;
3. The machine is equipped with an overload protection function;
4. The machine features a torque-angle curve graph, where the curve for each cycle can be selectively displayed. For easier observation, each curve can be assigned a different color as needed.
5. Has result printing functionality;
6. Easy to install and remove, simple operation, fast detection speed, and convenient clamping.
Technical specifications:
● Maximum torque (N·m) | 10 | 20 | 50 | 100 | 200 |
● Test Machine Accuracy Class | Class 1 or Class 0.5 (precision class) | ||||
● Torque Measurement Range | 2%-100% F.S or 0.4%-100% (precision class) F.S | ||||
● Torque Indication Relative Error (%) | ±1 or ±0.5 (precision grade) | ||||
● Torque Resolution (N·m) | 0.01 | ||||
● Minimum reading value of the twist angle (°) | 0.1 | ||||
● Relative error of torsion angle indication (%) | ±1 | ||||
● Test speed (r/m) | 1-5 | ||||
● Effective test space (mm) | 0-200 mm or negotiable | ||||
● Main unit dimensions (mm) | 950x330x1200 | ||||
● Power Supply | 220V±10%,50Hz | ||||
● Host Weight (kg) | 125 | ||||
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