TENSIONING FOR TURBOMACHINERY: 5 REASONS TO USE HYDRAULIC TENSIONERS?

Why Choose Hydraulic Tensioners for Maintenance and Repair?

The right tools are essential for safe, efficient maintenance – especially in turbomachinery industries like Oil & Gas, Power Generation, and Petrochemical. During planned shutdowns, technicians must prevent delays to avoid costly downtime. Hydraulic tensioners are an ideal solution, offering precision and efficiency. Here’s why:

Torque vs. Tensioning: Understanding the Difference

Torque Loading Limitations

Friction Issues: Sliding surfaces between threads and nuts can create torsional loading (“bolt twist”), reducing preload accuracy. 

Other Challenges: Tool inaccuracies, improper geometry, and operator error further compromise torque loading. 

Why Choose Hydraulic Tensioners: 

Mimimizes Friction: Pure tension eliminates torsional windup. 

Accurate Preload: Delivery precise and repeatable bolt loads with reduced scatter (±5% compared to ±25% with torque).

Top 5 Reasons to Use Hydraulic Tensioners

Optimized for Tight Spaces

• Perfect for confined areas where traditional wrenches or torque tools can’t fit. 
• Custom hydraulic rod tensioning systems work seamlessly in narrow spaces, like split-line compressor casing bolts. 

Reliability Repeatability and Precision

• Reduces preload scatter to better than ±5%.
• Achieves higher precision with stretch control measurements and simultaneous tensioning of multiple fasteners. 

Even Loading Across Joints

• Enables uniform load distribution for split-line flanges, gasketed joints, or sealing-critical applications. 
• Simultaneous tightening with multiple tensioners ensures consistent results. 

Prevents Galling

• Handles high-strength, high-temperature, or corrosion-resistant materials without sticking or galling. 
• Applies pure tension, reducing friction-related wear on threads and flanges. 

Maximizes Time Savings

• Speeds up installation, even for large-diameter fasteners. 
• Eliminates re-tightening leaks, cutting struck fasteners, and other delays caused by torque methods. 
• Enables more predictable maintenance schedules and faster turnarounds. 

The Bottom Line

Hydraulic tensioners provide unmatched accuracy, efficiency, and safety for turbomachinery maintenance. Choosing the right tools ensures successful repairs while minimizing downtime and costs.