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Simplifying Maintenance Across Mobile Equipment and Fixed Plant
Proven bolting solutions that extend life, increase safety and reduce downtime from pit to plant
In mining, bolted joints face constant vibration, impact, and heavy loads. When these connections loosen or wear out, both productivity and safety decline. The Nord-Lock Group delivers proven solutions for mobile equipment and fixed plants, tackling the toughest challenges of the mining industry.
Superbolt ® multi-jackbolt tensioners, paired with the Superbolt Tool or Direct Drive Tool, enable faster, safer installation by eliminating impact wrenches. This reduces operator fatigue and injury risk while delivering precise preload for joint life beyond 18,000 hours.
The Expander ® System pivot pins address pivot failure by expanding into worn lug bores, preventing further wear and allowing direct-fit replacement without machining or welding. With lifespans over 50,000 hours and installation in hours, these pins cut repeat repairs and ownership costs.
Applications across the mining industry
• Haul truck fleets: Haul truck struts, steering linkages and suspension pivots;
• Rope shovels: Crawler mounts, boom points, swing gearcases and dipper bearings;
• Construction and quarry machines: Loaders, dozers, excavators and drills; and
• Fixed Plant: Crushers and slurry pumps.
Superbolt mechanical tensioners
Superbolt tensioners replace conventional bolting methods with a multi-jackbolt design that delivers high preload using only hand tools. With solutions engineered for largediameter bolts, Superbolt kits are widely used across suspension mounts, crusher assemblies and pressure flanges.
Key products
• Superbolt strut kits for Caterpillar and Komatsu trucks;
• Steering linkage kits for Caterpillar and Komatsu trucks;
• Rope shovel retrofit kits for boom points, crowd mounts and gearcases;
• Superbolt flange tensioners for sealed pump and piping joints; and
• Superbolt tensioners for all types of crushers.
Benefits
• Installed with simple hand tools, no hydraulic wrenches required;
• Accurate, uniform preload for long service life;
• Reusable components with field-tested reliability; and
• Ideal for confined spaces and safetysensitive environments.
Expander System pivot pins
The Expander System is a permanent solution to pivot wear on mobile machinery. Using expansion sleeves mounted at both ends of the pin, it locks into worn lugs without the need for line boring or welding.
Key products
• Single- and multi-bolt kits for pivot points on haul trucks, drag lines, rope shovels, dozers, excavators and more;
• Pins are compatible with all OEMs including CAT, Komatsu, Hitachi and Liebherr equipment; and
• Special coatings and configurations for corrosive or high-load environments.
Benefits
• Installations in a few hours, even in worn bores;
• Eliminates lug wear and the need for repeated machining; and
• Extends pin service life to 50,000 hours or more.
Superbolt Tool and Direct Drive Tool: Power-assisted installation
The Superbolt Tool and Direct Drive Tool are devices that tighten all jackbolts simultaneously. They greatly reduce maintenance time and manual effort during installation or removal of Superbolt tensioners.
Tool advantages
• Speeds up tensioner assembly to under 8 minutes per nut;
• Delivers consistent preload and minimises installation errors;
• Ideal for rope shovels, front strut mountings, crushers and flange assemblies with repetitive bolting tasks; and
• Safer, hands-free installation for technicians.
Field-proven successes
• Komatsu 930 front strut mounts, Canada: Installed in under one hour per truck using two workers and hand tools. Now deployed across 40-plus units.
• CAT 797 suspension mounts, Canada: Solved fatigue failure in OEM bolts with Superbolt tensioners exceeding 18,000 hours of operation.
• CAT 7495 rope shovel side frames, Brazil: Superbolt Tool enabled three-hour tensioning cycles versus a full-day manual job.
• CAT 777G suspension, UK: Expander System cut pivot repair downtime from three days to one shift.
• CAT 793B fleet retrofit, Wyoming: Pin life extended from 10,000 to 50,000 hours using Expander; installation time cut to one hour per pivot.
• Komatsu 980 first fit, Canada: SMS Equipment fitted an alternative pin solution with the Expander System, increasing safety and reducing installation time.
Let’ s make maintenance easier
From worn pivot pins to high-pressure bolted flanges, Nord-Lock Group simplifies maintenance and increases equipment reliability for the world’ s most demanding mining operations.
Learn more at www. nord-lock. com
Nord-Lock Group Nick Addington- Global Mining Segment Manager nicholas. addington @ nord-lock. com + 1 563 200 3948 www. nord-lock. com
International Mining | SEPTEMBER 2025 17