Multi-Stage Hydraulic Bolt Tensioners

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Multi-Stage Hydraulic Bolt Tensioners - High Force in Restricted Radial Spaces

Multistage

Multi-Stage Hydraulic Bolt Tensioners - High Force in Restricted Radial Spaces

The ABS HFMT Series features a stacked-cylinder design, delivering maximum axial load with a slim diameter. Perfect for wind turbine foundations and narrow bolt circles, these tools offer high-capacity tensioning where standard tools cannot physically fit.
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Specifications
Minimum Tensioner Load (kN) / (TONF)
288 / 64,742
Maximum Tensioner Load (kN) / (lbf)
2244 / 494,560
Bolt Dia (inch) / (metric)
1" - 2 1/2" / M24 - M64
Tool Height (mm)
185 - 376
Slim-Line Design
 Stacked chambers provide massive force in tight radial spaces.
Auto-Retract
 High-tension springs ensure rapid piston return for fast cycling.
Overstroke Safety
 Integrated relief valves and indicators prevent seal damage.
High Efficiency
 Optimized for repetitive, high-load bolting in wind energy.
Heavy-Duty Build
 Engineered to withstand rigorous industrial and field use.

Call to Action

Whether you need to purchase the HFMT Series or opt for a Dry or Supervised Rental

Contact ABS for a quote or demo: marketing@absgroup.in | +91-8282829795

MODEL BOLT DIA MAX. LOAD TENSIONER DIA TENSIONER HEIGHT TENSIONER STROKE
inch mm KN lbf inch mm inch mm inch mm
HFMT-24 1" M24 288 64742 2.36 60 7.4 185 0.28 7
HFMT-27 1-1/8" M27 375 84300 2.6 66 7.62 193.5 0.28 7
HFMT-30 1-1/8" M30 462 103858 2.83 72 7.91 201 0.28 7
HFMT-33 1-1/4" M33 572 128586 3.07 78 8.5 216 0.31 8
HFMT-36 1-3/8" M36 670 150616 3.25 82.5 9.04 229.5 0.39 10
HIFMT-39 1-1/2" M39 802 180290 3.62 92 10.31 263 0.39 10
HFMT-42 1-5/8" M42 920.5 206928 3.86 98 10.31 262 0.39 10
HFMT-45 1-3/4" M45 1082 243234 4.13 105 10.91 281.5 0.39 10
HFMT-48 1-7/8" M48 1222 274706 4.37 111 11.56 293.5 0.39 10
HFMT-52 2" M52 1452 326410 4.72 120 12.8 327 0.39 10
HFMT-56 2-1/4" M56 1675 376540 5.04 128 12.99 330 0.39 10
HFMT-64 2-1/2" M64 2244 494560 5.83 146 14.23 376 0.47 12

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.

HX Series Hydraulic Hand Pumps

The ABS HX Series provides reliable hydraulic power for bolt tensioning without external power. Its two-stage design ensures efficiency by reducing strokes to reach high pressure. Lightweight and durable, it’s perfect for portable, precise onsite applications.

HX Series Hydraulic Hand Pumps

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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.

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.
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