Hollow Hydraulic Torque Wrench - Aerospace-Grade Materials for High-Precision Torque Across a Wide Bolt Range
This hollow hydraulic torque wrench is engineered for tightening heavy-duty bolts with precision and efficiency. The main body is crafted from 70-series aerospace-grade aluminum alloy and other high-strength alloys, combining lightweight handling with robust durability. This ensures ease of operation without operator fatigue while delivering ample torque power.
Operating at a maximum pressure of 700 bar, the wrench offers torque accuracy of ±3% with 100% repeatability, guaranteeing that every bolt achieves consistent and reliable tension. The reaction arm provides full 360° rotation, while the oil inlet and outlet ports offer 360° x 180° directional adjustability, allowing operation in tight or confined spaces. The drive shaft can be changed effortlessly with a simple push-button mechanism. Its unidirectional ratchet design with anti-reverse functionality enables hands-free operation once positioned. For safety, the hydraulic circuit includes an overpressure relief protection system, providing enhanced user confidence during use.
This product range accommodates bolt sizes from M14 to M125. Common models are available in stock, and we also accept custom orders based on technical drawings, along with OEM/private label requests.
Key Specifications
|
Item |
Details |
|
Core Material |
70-series Aerospace Aluminum Alloy, Alloy Steel |
|
Max. Operating Pressure |
700 bar |
|
Torque Accuracy |
±3%; Repeatability: 100% |
|
Sample Policy |
Free samples available |
|
Shipping Method |
Sea Freight (FOB Ningbo/Shanghai Port) |
|
Packaging |
Cardboard Carton + Wooden Pallet |
|
Payment Terms |
Telegraphic Transfer (T/T) |
|
Lead Time |
30–45 Days |
|
Customization Services |
Supports OEM, Manufacturing per Drawings, Custom Sizing |
We provide a sample service, allowing you to test torque accuracy and ergonomic performance firsthand. Packaging-cardboard cartons secured on wooden pallets-ensures that all precision components remain protected during transit. Shipments are dispatched via sea freight from Ningbo or Shanghai ports, utilizing established logistics channels for reliable and secure delivery. Payment is processed via Telegraphic Transfer (T/T), offering a simple and hassle-free transaction process. Lead times are strictly controlled, and our quality assurance team continuously monitors production standards.
Whether for wind power, petrochemical, or heavy machinery applications, this hollow hydraulic torque wrench represents a practical, high-performance, and highly reliable choice.
The structural diagram of the drawing is as follows
Customers can choose to purchase according to the following model parameters
| Model | 07MDW | 1MDW | 3MDW | 5MDW | 8MDW | 10MDW | 15MDW | 20MDW | 25MDW | 35MDW | 50MDW |
|
Torque Range N.m |
112-1120 | 183-1837 | 451-4512 | 752-7528 | 1078-10780 | 1551-15516 | 2063-20637 | 2666-26664 | 3472-34725 | 4866-48666 | 7200-72000 |
| Bolt Specifications | 14-30 | 16-36 | 27-48 | 27-56 | 30-64 | 36-72 | 39-80 | 42-90 | 48-100 | 64-120 | 72-125 |
|
Weight kg |
1.6 | 2.6 | 5.4 | 8.7 | 11.7 | 14.8 | 22 | 27.8 | 35.5 | 49.4 | 90 |
| L2 | 139.3 | 173 | 244 | 285.5 | 311 | 339.7 | 395 | 450.8 | 459.2 | 495.5 | 516 |
| H1 | 42 | 50 | 68 | 80 | 90 | 100 | 110 | 120 | 137 | 153 | 160 |
| H2 | 65.8 | 72 | 95.3 | 123 | 130.5 | 140.8 | 178.7 | 188.2 | 199.8 | 215.6 | 222.6 |
| H3 | 76.2 | 95.5 | 127 | 149 | 167 | 182 | 200.3 | 220 | 247 | 282 | 290.5 |
| H4 | 119 | 138.3 | 176.5 | 198.5 | 216.5 | 231.5 | 249.8 | 269.5 | 296.5 | 331.5 | 340 |
| R1 | 20.5 | 26 | 34 | 39 | 47 | 51 | 55 | 59 | 66 | 77 | 81 |
| R2 | 68.3 | 84.5 | 131.3 | 158 | 171 | 174 | 222.5 | 250.5 | 250.5 | 279 | 258.5 |
| Square Drive | 3/4" | 3/4" | 1" | 1-1/2" | 1-1/2" | 1-1/2" | 2-1/2" | 2-1/2" | 2-1/2" | 2-1/2" | 2-1/2" |
Product usage instructions
- Maximum operating pressure: 700 bar.
- 360° rotating adjustable reaction arm.
- Snap-on reaction arm for easy replacement.
- 360×180° universal rotating oil inlet and outlet ports.
- Push-button release drive shaft for easy replacement.
- One-way ratchet ensures operation without holding or additional tools.
- Constructed from high-tech aerospace materials: aluminum-titanium alloy and high-strength alloy steel for the anti-lock switch.
- Special anti-corrosion surface treatment.
- Minimum operating radius.
- Anti-reverse design with rebound shock absorption device.
- Hydraulic overpressure relief safety device.
- Torque accuracy: ±3%; Repeatability: 100%.
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