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Help CenterManual Self-Locking Torque Wrench, 20-100 Nm, Ergonomic Handle, Steel Body, Dual Direction
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Welcome to Cangzhou Dean Safety & Special Tools Co., Ltd, a leading manufacturer with over two decades of expertise in producing high-quality torque tools. Our Manual Self-Locking Torque Wrench (20-100 Nm) is engineered to deliver precise, repeatable torque application in both industrial and automotive settings. The self-locking mechanism ensures that once the preset torque is reached, the wrench clicks and disengages, preventing over-tightening and ensuring consistent fastening. With an ergonomic handle and a durable steel body, this tool combines operator comfort with rugged reliability, making it an essential instrument for professionals who demand accuracy and efficiency.
This torque wrench is designed for dual-direction operation, allowing you to tighten or loosen fasteners with equal precision. Whether you are working on engine assemblies, structural steel connections, or heavy machinery maintenance, the 20-100 Nm range covers a wide spectrum of common torque specifications. The self-locking feature adds an extra layer of safety by eliminating accidental changes during use, while the ergonomic handle reduces hand fatigue during repetitive tasks. Below, we dive into the key features and specifications that make this tool a reliable choice for your workshop or production line.
Key Features & Technical Specifications
- Self-Locking Mechanism: The internal locking system holds the set torque value firmly in place, preventing unintentional adjustments even under heavy vibration or constant use. This ensures each fastener receives the exact torque you dial in.
- Dual-Direction Operation: Switch between clockwise (tightening) and counterclockwise (loosening) modes with a simple twist. The same high accuracy applies to both directions, making this tool versatile for assembly, disassembly, and inspection tasks.
- Ergonomic Handle: The handle is contoured to fit the natural grip of your hand, with a soft-touch surface that minimizes slippage. Its shape reduces strain on your wrist and forearm, allowing you to work longer without discomfort.
- Steel Body Construction: The main body is forged from high-strength alloy steel, then heat-treated and coated with a corrosion-resistant finish. This gives the wrench excellent durability and a long service life even in harsh environments.
- Clear Scale & Locking Collar: The torque scale is laser-etched and easy to read, with markings for Nm and lb-ft (dual units). A locking collar secures the setting so you can start work with confidence.
- Calibration Ready: Each wrench is factory-calibrated to meet international accuracy standards. For critical applications, recalibration services are available upon request.
| Parameter | Value |
|---|---|
| Torque Range | 20 – 100 Nm (15 – 75 lb-ft) |
| Accuracy | ±4% (typical, clockwise); ±6% (counterclockwise) – factory calibrated |
| Drive Size | 1/2 inch (standard); 3/8 inch available on request |
| Overall Length | ~450 mm (17.7 in) |
| Body Material | Heat-Treated Alloy Steel |
| Handle Material | TPR (Thermoplastic Rubber) over steel core |
| Direction | Dual (CW / CCW) via reversible ratchet head |
| Weight | Approx. 1.3 kg (2.87 lbs) |
Benefits for Your Operations
- Enhanced Precision: The self-locking feature means once you set the torque, it stays locked until you intentionally release it. This eliminates the risk of drift during use, giving you consistent results on every fastener.
- Improved Safety: By preventing over-tightening, the wrench reduces the chance of thread stripping, bolt breakage, or component damage. This is especially critical in safety-related applications like automotive brakes or structural joints.
- Reduced Operator Fatigue: The ergonomic handle design distributes force evenly across your palm and fingers, allowing for extended use without discomfort. This leads to higher productivity and fewer errors caused by tired hands.
- Long Tool Life: The steel body resists bending and deformation even under high torque loads. Coupled with a rust-resistant finish, this wrench can withstand daily use in workshops, factories, or outdoor job sites for years.
- Versatility Across Applications: With a torque range of 20-100 Nm, the wrench covers tasks from bicycle and motorcycle maintenance to truck wheel lug nuts, industrial machinery assembly, and more. The dual-direction capability further adds flexibility for both tightening and loosening operations.
- Easy Maintenance: The self-locking mechanism is designed for simple field adjustment and lubrication. Should calibration ever be required, our global service network can assist quickly.
At Cangzhou Dean Safety & Special Tools Co., Ltd, quality is the cornerstone of our business. Since our founding in 2001, we have grown into a manufacturer with annual export value exceeding US$100 Million, serving clients across North America, South America, Europe, Asia, Africa, and Oceania. We ship from major Chinese ports such as Tianjin, Shanghai, and Ningbo, ensuring fast and reliable logistics to your doorstep. Our team of engineers continuously refines our tool designs based on real-world feedback, so you can trust that this torque wrench embodies the latest advancements in precision tooling.
We stand behind our products with rigorous quality control procedures and a commitment to customer satisfaction. Whether you are a purchasing manager looking to standardize your shop floor, a maintenance technician needing a dependable tool, or a distributor seeking a reliable OEM partner, we invite you to experience the difference that two decades of specialized manufacturing can make. Contact us today to place an order or request a custom configuration. Our sales team is ready to provide prompt service and competitive pricing.
Frequently Asked Questions (FAQ)
- How does the self-locking mechanism work? – The locking collar surrounds the adjustment thimble. When turned clockwise, it compresses an internal spring that prevents the thimble from rotating. To change torque, you simply loosen the collar, adjust to the desired value, then re-tighten it. This design ensures the setting remains fixed during use.
- Can I use this wrench for both tightening and loosening? – Yes, the dual-direction ratchet head allows you to switch between clockwise and counterclockwise operation. The self-locking mechanism works regardless of direction.
- What is the accuracy of this torque wrench? – The factory calibration yields typical accuracy of ±4% in clockwise direction and ±6% in counterclockwise direction. For higher-precision needs, we offer custom calibration upon request.
- Is the handle replaceable if it wears out? – The ergonomic handle is molded onto the steel core and is not designed to be user-replaceable. However, under normal use, the TPR material is highly durable. In case of damage, please contact our support team for repair options.
- Does the wrench come with a calibration certificate? – Yes, each unit ships with a factory calibration certificate. Additional certificates (e.g., traceable to national standards) can be provided at an extra charge.
- What drive sizes are available? – The standard model features a 1/2-inch square drive. We also offer 3/8-inch and 3/4-inch adapters or custom drives for specialized applications. Please specify when ordering.
- How do I maintain the self-locking feature? – Periodically clean the locking collar threads and apply a light machine oil. Avoid over-tightening the collar—it only needs to be snug. If the mechanism becomes stiff, consult the user manual or contact our service department.
- What is the warranty coverage for this torque wrench? – We provide a 12-month warranty against manufacturing defects. For commercial/industrial use, extended warranty plans are available. Please refer to our terms and conditions for full details.
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