GT4LCB, Hydraulic Topside Bolt Tensioner, M52 - M68 Maximum Thread Range

Enerpac GT4LCB is a high-performance hydraulic topside bolt tensioner from the GT Series, engineered for precise, uniform tensioning of large-diameter bolts (M52–M68) on standard flanges such as ANSI, API, and Norsok L005 compact flanges. This compact tool provides high bolt-load capacity at up to 1500 bar pressure, with twin ports for multi-tool connectivity, a full-bridge window for easy access, and a quick-release bridge for rapid setup, making it ideal for efficient, safe bolting in oil & gas, power, and heavy industrial maintenance environments.

• Model: GT4LCB (Hydraulic Topside Bolt Tensioner)
• Thread Range: M52–M68 (2"–2 1/2")
• Maximum Operating Pressure: 1500 bar (21,750 psi)
• Load Capacity: 164.9 tons (1,466.9 kN)
• Hydraulic Pressure Area: 9,782 mm² (15.16 in²)
• Stroke: 10 mm (0.39 in.)
• Minimum Socket Rotation: 60°
• Weight: 30 kg (66 lb.)
• Dimensions (in mm/in.):
  • A (Overall Height): 180 (7.09)
  • B (Body Diameter): 141 (5.55)
  • C (Piston Diameter): 62 (2.44)
  • D (Overall Length): 180 (7.09)
• Connectivity: Twin hydraulic ports for multi-tool linking; requires ultra-high-pressure fittings/hoses
• Features: Full-bridge window for easy access; quick-release bridge; visible stroke indicator; captive socket to prevent dropped parts; misalignment compensation (±5°); over-stroke relief valve; spring return; anti-slip grip; tommy bar included
• Operator Feedback: Stroke indicator for cycle monitoring; ergonomic design for reduced fatigue
• Maintenance Features: Self-energizing seals; corrosion-resistant construction; annual inspection of seals/hoses recommended; compliant with Machine Directive 2006/42/EC, ASME B30.1, EN-ISO 4413:2010, EN-ISO 12100:2010