HM12LC, HydraMax Hydraulic Topside Bolt Tensioners, M48 - M64 Maximum Thread Range

Enerpac HM12LC is a high-performance load cell from the HydraMax series of hydraulic topside bolt tensioners, designed for precise, uniform tensioning of large-diameter bolts (M48–M64) on standard flanges such as ANSI, API, and Norsok L005 compact flanges. Delivering 30% greater load capacity than conventional tensioners, this model incorporates a long 15 mm stroke for fewer cycles, over-stroke protection via relief valve, and a quick-release bridge for rapid setup, ensuring safe, efficient bolting at up to 1500 bar with features like misalignment compensation (±5°), captive sockets to prevent dropped parts, and anti-slip grips, ideal for oil & gas, power, and heavy industrial maintenance.

• Model: HM12LC (HydraMax Hydraulic Topside Bolt Tensioner Load Cell)
• Thread Range: M48–M64 (1 7/8"–2 1/2")
• Maximum Operating Pressure: 1500 bar (21,750 psi)
• Load Capacity: 1800 kN (205 tons)
• Stroke: 15 mm (0.59 in.)
• Hydraulic Pressure Area: 12,000 mm² (18.6 in²)
• Minimum Socket Rotation: 60°
• Weight (Load Cell Only): 12 kg (26.5 lb.); full assembly with adapter/bridge kit: 10–13 kg (22–28.7 lb.) depending on configuration
• Dimensions (Typical with Adapter/Bridge; varies by config, in inches): Overall Height (A): 7.2–7.6; Body Diameter (B): 6.2–6.8; Piston Diameter (C): 2.9–3.3; Overall Length (D): 10.2–11.6; Bridge Width (E): 3.4–3.6; Reaction Arm Length (F): 3.8–4.0; Stud Protrusion Required (N): 11.0–11.4; Nearest Obstruction (X min.): 1.4–1.7
• Connectivity: Twin hydraulic ports for multi-tool linking; requires ultra-high-pressure fittings/hoses
• Features: Long-stroke capability with over-stroke relief valve and spring return; quick-release bridge; visible stroke indicator; captive socket to prevent falling objects; interchangeable adapter kits; 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
• Additional Features: 30% higher load vs. conventional tensioners; suitable for ANSI/API/Norsok L005 flanges; ATEX options available; load cells ordered separately from adapters/bridges for flexibility