1. Introduction
This manual provides essential instructions for the safe and effective use, setup, operation, and maintenance of your Norbar 11087 3/8-inch Fixed Head Adjustable Torque Wrench. Please read this manual thoroughly before using the tool to ensure proper function and to prevent injury or damage.
2. Safety Information
Always observe the following safety precautions when using the torque wrench:
- Wear appropriate personal protective equipment, such as safety glasses.
- Ensure the workpiece is securely fastened before applying torque.
- Do not exceed the maximum torque capacity of the wrench (20 Nm / 180 lbf.in).
- Avoid dropping or subjecting the wrench to severe impacts, as this can affect its accuracy.
- Do not use the wrench as a pry bar or hammer.
- Keep the wrench clean and free from grease or oil to maintain a secure grip.
- Store the wrench in a dry, protected environment when not in use.
3. Product Overview
The Norbar 11087 is a 3/8-inch drive fixed head torque wrench designed for precise torque application. It features a high-quality 72-tooth reversible ratchet mechanism, allowing for use in confined spaces and for both left and right-handed torque tightening. The wrench provides an unmistakable signal when the set torque is reached, ensuring accurate fastening.
Figure 1: Norbar 11087 3/8-inch Torque Wrench
This image displays the Norbar 11087 torque wrench, highlighting its robust construction and ergonomic handle. The 3/8-inch drive square is visible at the head, indicating its connection point for sockets.
Key Features:
- Accuracy: Exceeds all international standards, calibrated to 3%.
- Ratchet: High-quality 72-tooth reversible ratchet for tight spaces.
- Drive: Fixed head with a push-through square for bi-directional torque application.
- Signal: Clear indication when target torque is achieved.
- Grip: Moulded handle for correct hand location and user comfort.
4. Setup
4.1 Setting the Torque Value
The Norbar 11087 torque wrench allows for easy adjustment of the desired torque setting within its range of 4-20 Nm (40-180 lbf.in).
- Locate the adjustment mechanism on the handle of the torque wrench.
- Rotate the adjustment knob or collar to align the desired torque value with the indicator mark on the wrench body.
- Ensure the setting is locked in place if your model features a locking mechanism.
- Always double-check the set torque value before use.
4.2 Attaching Sockets
Attach the appropriate 3/8-inch drive socket to the square drive of the wrench. Ensure the socket is fully seated and securely attached.
5. Operating Instructions
5.1 Applying Torque
- Position the wrench on the fastener, ensuring the socket is fully engaged.
- Hold the wrench by the moulded grip, ensuring your hand is correctly located for optimal leverage and comfort.
- Apply a smooth, steady pull or push to the handle until the wrench gives an unmistakable signal (a distinct click or break in resistance) indicating that the preset torque has been reached.
- Stop applying force immediately once the signal is felt or heard.
- For left-handed torque tightening, utilize the push-through square drive to reverse the ratchet direction.
5.2 Ratchet Direction
The 72-tooth ratchet head is reversible. To change the direction of operation (e.g., for loosening fasteners or for left-hand torque applications), push the square drive through the head of the wrench to the opposite side.
6. Maintenance
6.1 Cleaning and Storage
- Wipe the wrench clean with a soft, dry cloth after each use. Do not use harsh chemicals or solvents.
- Store the torque wrench in its protective case or a dry, clean environment to prevent damage and corrosion.
- For wrenches with a spring mechanism, it is recommended to set the torque to the lowest setting before storage to relieve spring tension and maintain accuracy over time.
6.2 Calibration
The Norbar 11087 torque wrench is supplied with a traceable calibration certificate, satisfying ISO9000:2000 quality systems. To maintain its accuracy, periodic recalibration by an authorized service center is recommended, typically annually or after significant impact or misuse.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Wrench does not click/signal at set torque. | Torque setting too low; Wrench not pulled smoothly; Internal mechanism damage. | Verify torque setting; Apply smooth, steady force; Contact Norbar support for inspection. |
| Inaccurate torque readings. | Out of calibration; Damage from dropping; Incorrect usage. | Recalibrate the wrench; Inspect for damage; Review operating instructions. |
| Ratchet slips or does not engage. | Worn ratchet mechanism; Debris in ratchet head. | Clean ratchet head; Contact Norbar support for repair or replacement. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 11087 |
| Drive Size | 3/8 inch Square |
| Torque Range | 4-20 Nm (40-180 lbf.in) |
| Accuracy | ±3% |
| Torque Radius | 144 mm |
| Ratchet Teeth | 72 |
| Ratchet Type | Reversible (Push-through square) |
| Length | 220 mm |
| Weight | 0.4 kg (14.1 ounces) |
| Material | Alloy Steel |
| Finish | Polished |
| Operation Mode | Mechanical |
| Measurement System | Inch, Metric |
9. Warranty and Support
Norbar products are manufactured to high standards and come with a traceable calibration certificate. For specific warranty details, service, or technical support, please refer to the documentation provided with your purchase or contact Norbar directly through their official website or customer service channels.
Note: Unauthorized repairs or modifications may void the warranty and affect the accuracy of the tool.