Standard
Precision Tensioning for Critical Bolted Joints
The ABS HFST Series eliminates the unpredictability of friction by applying pure axial force to your bolts. This ensures that hydraulic pressure translates directly into precise, repeatable preload. Designed for high-stakes environments like subsea pipelines and power turbines, these tensioners guarantee superior joint integrity where traditional torque methods fall short.
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Specifications
Load Range
233 kN – 4903 kN
Pressure Rating
1500 bar (2500 bar available)
Bolt Range
3/4" – 5 3/4" (M16 – M150)
Stroke
12 mm – 15 mm
Friction-Free
Pure axial stretching ensures maximum preload accuracy.
Pure axial stretching ensures maximum preload accuracy.
Uniform Load
Tension 50% or 100% of bolts simultaneously for even seating.
Tension 50% or 100% of bolts simultaneously for even seating.
High Efficiency
Fast operation significantly reduces maintenance downtime.
Fast operation significantly reduces maintenance downtime.
Long Stroke
Optimized design allows for efficient use across diverse application clearances.
Optimized design allows for efficient use across diverse application clearances.
Safe & Certified
ATEX and CE certified for hazardous environments.
ATEX and CE certified for hazardous environments.
| MODEL | BOLT SIZE | MAXIMUM TENSIONER LOAD |
HYDRAULIC PRESSURE AREA (mm²) |
MAX. PRESSURE (bar) |
DIMENSIONS (mm) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| inch | mm | kN | tonf | STROKE | DIM A | DIM B | DIM D/C | DIM E | DIM F | |||
| HFST-11 | - | M16 | 233 | 23.8 | 1555 | 1500 | 12 | 74 | 31 | 79.3 / 64 | 44 | 74 |
| 3/4" | M20 | |||||||||||
| 7/8" | M22 | |||||||||||
| 1" | M24 | |||||||||||
| 1-1/8" | M27 | |||||||||||
| 1-1/8" | M27 | |||||||||||
| HFST-12 | - | M30 | 443 | 44 | 2884 | 1500 | 15 | 108 | 42 | 101.2 / 89 | 58.1 | 102.1 |
| 1-1/4" | M33 | |||||||||||
| 1-3/8" | M36 | |||||||||||
| 1-1/2" | M39 | |||||||||||
| HFST-13 | 1-1/2" | M39 | 791 | 80 | 5271 | 1500 | 15 | 136 | 54 | 89 / 116 | 58 | 132.47 |
| 1-5/8" | M42 | |||||||||||
| 1-3/4" | M45 | |||||||||||
| 1-7/8" | M48 | |||||||||||
| 2" | M52 | |||||||||||
| HFST-14 | 2" | M52 | 1267 | 129 | 8445 | 1500 | 15 | 172 | 65.5 | 102 / 119.5 | 58 | 162 |
| 2-1/4" | M56 | |||||||||||
| 2-1/2" | M64 | |||||||||||
| HFST-15 | 2-1/2" | M64 | 1830 | 186 | 12197 | 1500 | 15 | 200 | 76 | 131 / 98 | 64 | 187 |
| 2-3/4" | M72 | |||||||||||
| 3" | M76 | |||||||||||
| HFST-16 | 3" | M76 | 2502 | 255 | 16682 | 1500 | 15 | 235 | 94 | 125 / 163 | 68 | 218 |
| 3-1/4" | M80 | |||||||||||
| 3-1/2" | M90 | |||||||||||
| HFST-17 | 3-1/2" | M90 | 2629 | 268 | 17530 | 1500 | 15 | 245 | 102 | 148 / 125 | 66 | 245 |
| 3-3/4" | M95 | |||||||||||
| 4" | M100 | |||||||||||
| HFST-18 | 4" | M100 | 3802 | 387.7 | 25349 | 1500 | 15 | 286 | 122 | 133 / 157 | 73 | 284 |
| 4-1/2" | M110 | |||||||||||
| 5" | M125 | |||||||||||
| HFST-19 | 5" | M125 | 4903 | 500 | 32688 | 1500 | 15 | 335 | 143 | 165 / 191 | 78 | 325 |
| 5-1/4" | M130 | |||||||||||
| 5-3/4" | M150 | |||||||||||
Related Products
The ABS tensioning pumps redefine bolting operations by delivering precise and controlled force for consistent and accurate bolt tensioning. Available in manual, electric, and pneumatic models, these pumps are designed to meet diverse operational needs across industries. Their advanced precision minimizes the risk of over- or under-tightening, effectively preventing joint failures and component damage—setting ABS apart from traditional tensioning methods.Going beyond conventional practices, our pumps enhance safety, versatility, and ease of use in every bolting application. ABS pumps are ergonomically designed, lightweight, and compact, ensuring comfortable handling even in constrained spaces. Their robust construction and compatibility with various hydraulic tensioners enable efficient operation across a wide range of bolt sizes and applications—delivering superior safety, reliability, and operational efficiency in every task.
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Frequently Asked Questions
You will find answers to about our various industries and industry specialists service and more. Please feel
free to contact us if you don't get your question's answer in below.
free to contact us if you don't get your question's answer in below.
A hydraulic bolt tensioner is a precision tool used to apply accurate axial load to a bolt using hydraulic pressure. It stretches the bolt directly rather than applying torque, ensuring uniform clamping force, reduced frictional loss, and repeatable tightening—especially critical for large-diameter and high-load bolted joints.
Hydraulic bolt tensioners are widely used in industries such as power generation, oil & gas, wind energy, petrochemicals, heavy engineering, and steel plants. Typical applications include flanges, pressure vessels, heat exchangers, turbines, structural joints, and critical maintenance shutdowns.
Hydraulic bolt tensioning offers higher accuracy, even load distribution, faster installation, and eliminates errors caused by friction in threads and under-head bearing surfaces. It is especially suitable for simultaneous tightening of multiple bolts and for applications where precise preload control is essential.
Selecting the correct hydraulic bolt tensioner depends on bolt diameter, thread pitch, required preload, available clearance, and application conditions. Manufacturers typically provide load charts and technical support to ensure the correct tensioner model is chosen for safe and efficient operation.
Yes, hydraulic bolt tensioners are safe when used correctly and in accordance with manufacturer guidelines. Proper operator training, use of certified high-pressure hoses and pumps, and adherence to recommended pressure limits ensure safe and reliable tensioning during operation.
Yes, hydraulic bolt tensioners can be customised to suit special bolt sizes, restricted clearances, non-standard flanges, or specific industry requirements. Custom solutions are commonly developed for OEMs, shutdown projects, and specialised maintenance applications.
