Top Side Bolt Tensioners
Bolt Tensioners are high-precision, fast, and safe tools designed for accurate bolt pre-loading. A single tensioner model can cover multiple bolt sizes, offering better efficiency and user-friendliness compared to conventional tightening tools. These tensioners can also be operated using a hydraulic hand pump when required.
They are widely used for pre-loading and de-tensioning bolts and studs on flanges of pressure vessels, boiler feed pumps, compressor covers, heat exchangers, and pipelines where uniform joint loading is essential. All tensioners are compatible with standard flange specifications.
Torc Star Bolt Tensioners provide a quick and reliable method of tightening and loosening bolts and studs through controlled hydraulic tensioning. When hydraulic pressure is applied through a Torc Star Pneumo-Hydraulics pump, the load cell lifts the puller upward while gripping the stud threads. This action releases the nut, allowing it to be easily rotated using a nut-rotating socket and tommy bar. The same process is used for both tightening and loosening operations. Each tensioner assembly consists of a load cell, puller, nutrotating socket, and bridge.
Technical Specifications:
Bolt/Stud Size : M16-M100 (Metric) or ¾ -4 inch
Cylinder Capacity : 30-265 Tons
Stroke Cap : 10-15 mm
Effective Area : 15.7-176 cm2
Approx. Weight : 2-25 kg
Applications:
- Pipeline Flanges
- Pressure Vessels
- Valves and Pumps
- Heat Exchangers
- Diesel Engines
- Cranes
- Steam and Gas Turbines
- Shaft Couplings
- Coal and Rock Grinders
- Catalyst Reactors
- Wind Turbines
- Electric & Steam Generators
Key Features:
Engineered to deliver accurate and uniform tension across all bolts for reliable joint integrity.
Ideal for pre-loading and de-tensioning bolts and studs used on pressure vessels, heat exchangers, pipelines, and other flange joints.
Compatible with both manual hand pumps and power-operated hydraulic pumps.
Applies pure axial tension to eliminate frictional losses, ensuring precise and consistent bolt loading.
One tensioner fits multiple bolt sizes,reducing the need for multiple tools onsite.
Provides quick and effortless operation with minimal manual effort, improving overall work efficiency.
Product Specifications:
- Technical Data
| Model No |
Bolt/Stud Size |
Cylinder | Stroke Cap |
Effective Area |
Dimension | Approx Weight |
|||||||||
| (metric) | (Inch) | (tons) | (mm) | (cm2) | A | B | C | D | E | F | G | H | J | Kg | |
| THT-3 | M16 | - | 30 | 10 | 15.7 | 62 | 90 | 168 | 75 | 49 | 28 | 16 | 30 | 32.5 | 2 |
| M18 | 3/4" | 49 | |||||||||||||
| M20 | - | 51 | |||||||||||||
| M22 | 7/8" | 51 | |||||||||||||
| M24 | 1" | 60 | |||||||||||||
| THT-5 | M27 | 1 1/8" | 50 | 15 | 33 | 60 | 106 | 187 | 102 | 60 | 44 | 22 | 36 | 47 | 4 |
| M30 | - | 72 | |||||||||||||
| M33 | 1 1/4" | 74 | |||||||||||||
| M36 | 1 3/8" | 76 | |||||||||||||
| THT-9 | M39 | 1 1/2" | 90 | 15 | 60 | 60 | 120 | 208 | 133 | 88 | 56 | 28 | 49 | 61 | 6 |
| M42 | 1 5/8" | 90 | |||||||||||||
| M45 | 1 3/4" | 94 | |||||||||||||
| M48 | 1 7/8" | 100 | |||||||||||||
| M52 | 2" | 104 | |||||||||||||
| THT-13 | M48 | 1 7/8" | 125 | 15 | 83 | 62 | 135 | 231 | 163 | 110 | 68 | 34 | 59 | 73 | 10 |
| M52 | 2" | 112 | |||||||||||||
| M56 | 2 1/4" | 118 | |||||||||||||
| M60 | - | 126 | |||||||||||||
| M64 | 2 1/2" | 126 | |||||||||||||
| THT-19 | M64 | 2 1/2" | 185 | 15 | 123 | 62 | 150 | 254 | 193 | 136 | 80 | 42 | 66 | 86.5 | 15 |
| M68 | - | 144 | |||||||||||||
| M72 | 2 3/4" | 146 | |||||||||||||
| M76 | 3" | 154 | |||||||||||||
| THT-27 | M76 | 3" | 265 | 15 | 176 | 73 | 180 | 286 | 233 | 162 | 104 | 48 | 77 | 110 | 25 |
| M80 | - | 162 | |||||||||||||
| M85 | 3 1/4" | 174 | |||||||||||||
| M90 | 3 1/2" | 185 | |||||||||||||
| M95 | 3 3/4" | 200 | |||||||||||||
| M100 | 4" | 212 | |||||||||||||