Case Studies
Ensuring Smooth Railway Traffic with the THU Locknut
Recurring fastener loosening at a busy railway diamond meant daily inspections. See how THU Locknuts solved the problem and maintained reliability in extreme conditions.
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How it Works
J.Lanfranco Locknut Installation
Recognized in the industry as the world’s best locknut, the J. Lanfranco design combines an all-metal, reusable design with dual self-locking slots that prevent thread damage and deliver consistent torque independent of bolt tension.
How it Works
How Our Locknuts Work: Dual-Slotted Technology for Safety-Critical Bolted Joints
Watch our video to see the self-locking mechanism in action. Learn how J.Lanfranco dual-slotted locknuts provide consistent, repeatable torque for safety-critical bolted joints—even under vibration, shock, and impact.
Case Studies
Maximizing Shaker Table Reliability with THU and ERM Locknuts
Shaker tables in mining operations are prone to downtime due to loosened screens under extreme shock and vibration. J.Lanfranco THU and ERM locknuts provide high repeatable locking, integrated washer support, and multiple install/removal cycles to keep plants running efficiently.
Case Studies
Eliminating Loose Bolts on a Class 1 Double Diamond with THU Locknuts
A busy Class 1 double diamond faced frequent loose and seized bolts, causing weekly maintenance headaches and high costs. J.Lanfranco THU locknuts provided predictable locking, eliminated weekly replacements, and saved $50,000 in six months.
Case Studies
Reliable Valve Plate Installation with ESL Locknuts
Traditional two-piece locknuts create installation complexity, risk of galling, and inconsistent clamp force on compressor valve plates. J.Lanfranco ESL locknuts simplify installation while ensuring precise torque, perpendicularity, and long-term reliability.
Case Studies
Securing Railway Cover Boards Against Vibration
Vibration and collector shoe tension caused loose fasteners on power rail cover boards, risking safety and service disruptions. ERM locknuts provide a reliable, easy-to-install solution that keeps cover boards secure under daily train operations.
Case Studies
Eliminating Seized Nuts in Compression Check Valve Assembly
Seized locknuts during installation and maintenance were driving labor costs, downtime, and warranty risk for a compression check valve OEM. By switching to J.Lanfranco ESL locknuts, the manufacturer eliminated galling without anti-seize and standardized production at scale.
Case Studies
Eliminating Bolted Joint Failures in Cement Ball Mills
Sustained vibration and extreme temperatures make bolted joint failures a constant risk in cement production. A large European cement producer eliminated fastener-related downtime by installing J.Lanfranco ESL self-locking locknuts on critical ball mill assemblies.
Case Studies
Rebuilding a Collapsed Railway Bridge with the ESL Locknut
When a major railway bridge collapsed under heavy freight traffic, the failure wasn’t visible bolt loosening—it was silent clamp force loss.
Company News
Strengthening Reliability at J.Lanfranco & Cie
Ongoing industrial investments, expanded capabilities, and reinforced certifications continue to strengthen the reliability and competitiveness of our solutions.