EXPANDER SYSTEM

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 The Expander System is a permanent solution to lug wear in pivot joints of heavy machinery. Lug wear occurs when the clearance between the bore and conventional pivot pins increases due to repeated movement, leading to costly downtime and repairs. The Expander System eliminates the need for welding and line boring by allowing installation directly into worn mountings. 

 The Nord-Lock Expander System is a reliable and permanent solution for eliminating lug wear in pivot joints of heavy machinery. Traditional pivot pins often cause wear in the mounting holes, leading to costly downtime and repairs. The Expander System solves this by using a pivot pin with expanding sleeves that adapt to the shape of the worn bore. This allows for quick installation without welding or line boring, restoring the joint’s integrity and extending equipment life. 

 The system includes a central pin, expanding sleeves, tension washers, and fasteners. When tightened, the sleeves expand to lock the pin securely in place. It’s tested for over 50,000 hours of operation, with more than 1 million installations worldwide. Available in various configurations—straight, stepped, through bolt, and multi-bolt—it suits a wide range of machines. The Expander System is trusted by OEMs like Caterpillar, Komatsu, and Volvo, and is ideal for excavators, loaders, cranes, wind turbines, and more. It reduces maintenance, increases uptime, and ensures long-term performance in demanding environments.