EAJ1LC, Aquajack Subsea Bolt Tensioner, 3/4" - 7/8" Maximum Thread Range

Enerpac EAJ1LC is a compact, lightweight subsea bolt tensioner from the Aquajack series, optimized for precise tensioning of 3/4"–7/8" bolts in challenging underwater environments such as offshore oil & gas, pipelines, and marine maintenance. Featuring a long piston stroke for efficient operation, misalignment compensation for reliable alignment, and no-spill overstroke prevention for enhanced safety, this tool integrates quick hose connections and visible stroke indication, enabling rapid deployment with minimal downtime while supporting high-pressure hydraulic pumps for consistent performance up to 1,500 bar.

• Model: EAJ1LC (Aquajack Subsea Bolt Tensioner, low-capacity configuration)
• Bolt Range: 3/4"–7/8" (M20–M22)
• Maximum Load Capacity: 17 tons
• Maximum Operating Pressure: 21,750 psi (1,500 bar)
• Stroke: 3.31 in. (84 mm)
• Cylinder Effective Area: 1.56 in²
• Weight: 2.09 lb. (0.95 kg)
• Dimensions (in inches):
  • A (overall height): 4.49
  • B (piston diameter): 0.79
  • C (nut height): 0.75
  • D (body diameter): 2.60
  • E (nearest obstruction): 3.58
  • F (bridge width): 1.38
  • G (across tool centerline): 3.78
  • H (extra stud length required): 8.54
• Connectivity: 2x quick-connect hose ports (compatible with 21,750 psi stainless steel hoses; reels up to 885 ft. available)
• Features: Compact design for low-clearance access; long piston stroke for fewer cycles; misalignment compensation (±5°); visible piston stroke indication; "no spill" overstroke elimination; quick-fastening or solid reaction nut; self-energizing seals; anti-slip tool surface; includes tommy bar and lifting eyes
• Operator Feedback: Visual stroke indication; ergonomic handles for subsea handling
• Maintenance Features: Self-energizing seals for leak prevention; corrosion-resistant construction; annual hose/seal inspection recommended; drop-tested for durability
• Additional Features: ATEX-certified options available; complies with EN/ISO standards for subsea tools; ideal for ROV deployment; expandable with optional reaction bridges