The Expander System

The Permanent Solution to Pivot Wear

Machinery pivots wear with time, and the heavier the operation, the faster the wear. Pivot wear can result in equipment breakdowns, causing downtime and production shortfalls. These breakdowns often require welding and line boring – an expensive and temporary solution.

Expander System has the capacity to create the perfect pivot pin for your assemblies, regardless of branch or application. Our comprehensive offering includes structural strength calculations, dimensioning and production of complete pivot systems.

The solution is effective and reliable, with documented success in many industries, including Construction, Forestry, Mining machinery, Processing, Oil & Gas and Marine. The Expander System comes with an exclusive 10-year warranty on its locking mecahnism.

While conventional pivot pins are only locked on one side, the Expander System locks on both sides. This gives a stronger box construction to the whole machine pivot.

The sleeves expand over both ends of the tapered axle and lock securely even if the hole is worn. If the hole has been worn oval the Expander System fills out the ovality and gives a secure solution without any preparatory machining.



A. Expander System is installed directly into the existing mounting without expensive welding or line boring

B. When the fasteners are tightened, the washer presses the slotted expansion sleeve up the tapered ends of the pin

C. The sleeve expands, conform with the wear pattern and lock the system in the pivot lugs

D. Double sided locking gives increased safety

E. Easy to remove and reinstall

The Expander System offers an advanced, cost effective solution that prevents pivot wear, once and for all. With Expander System, the repair can be carried out directly in the worn mountings without welding or line boring, a solution that is permanent.

The Expander System has been field tested for over 50,000 hours without failure. Each system is installed, tested and approved for its specific application. With our proprietary 3D CADEX engineering system, evaluations and designs of new applications can be done instantly.

The Expander System is available in sizes and versions for all types of pivot. More than 20,000 different Expander System solutions for over 3000 types of machines have been developed. Our experience and knowledge allows us to offer custom made solutions even if the requirements are well beyond the standard.

The Expander System is part of the Nord-Lock Group. Click here for their website and more information on the Expander System.