Technical Specifications
Product Overview
NB Series Mechanical Torque Wrench
The NB series mechanical torque wrench offers high-precision fastening with an accuracy of +/- 3%. Designed for versatility, these tools feature a widely adjustable preset value system and interchangeable heads, including open spanner and wabbler configurations. Models exceeding 680N.m utilize a fission connection structure to optimize packaging, transportation, and storage efficiency.
Key Features
Core Advantages
- Interchangeable ratchet head options (Open spanner, Wabbler)
- High-precision +/- 3% accuracy
- Fission connection structure for heavy-duty models (>680N.m)
- Strict quality control and testing systems
Accuracy Class
Technical Specifications
Model Range Data
| Model | Range (N.m) | Gradation (N.m) | Length (mm) | Weight (Kg) |
|---|---|---|---|---|
| NB-5 | 1-5 | 0.05 | 187 | 0.18 |
| NB-10 | 2-10 | 0.1 | 200 | 0.2 |
| NB-22.5G | 5-22.5 | 0.25 | 255 | 0.3 |
| NB-25 | 5-25 | 0.25 | 225 | 5 |
| NB-50G | 10-50 | 0.5 | 307 | 0.45 |
| NB-100G | 20-100 | 1 | 420 | 0.84 |
| NB-180G | 40-180 | 1 | 530 | 1.48 |
| NB-200 | 50-200 | 1 | 580 | 1.73 |
| NB-230G | 50-230 | 1 | 670 | 1.85 |
| NB-300B | 60-300 | 1.5 | 680 | 2.6 |






