Permanent solutions for pivot wear 25 September 2017

Pivot wear is a common problem with all types of machinery. Repairs involve a costly, time-consuming process with significant downtime and are often repeated several times over a machine’s lifetime. 

Expander System consists of an assembly that includes: an axle, which is tapered at both ends, two expansion sleeves, two tension washers and two fasteners. The Expander System can also be integrated with Nord-Lock washers for vibration intense applications. When the fasteners are torqued, the tension washers push the expansion sleeves up the tapered part of the pin, thereby locking the system into the lug ears and eliminating the movement that causes pivot lug wear. The double-sided locking mechanism provides increased stability, security and a backlash-free joint. Installation can be easily done in the field, reducing downtime and cost.

Using Expander System the repair can be carried out directly in the worn mountings without welding and line boring, providing a solution that is permanent. The Expander System has been field tested for over 50,000 hours without failure. Each system is approved for its specific application. The Expander System is available in sizes and versions for all types of pivot positions. More than 60,000 different Expander System solutions for over 10,000 types of machines have been developed.

Through its accumulated experience and knowledge Expander System can offer custom made solutions even if the wear dimensions are beyond the size of the original pivot pin – accurately fitting application needs and resolving the toughest of problems.

Expander System customers have the most demanding applications and require maximum control. Expander System pins now use dot pin marking to ensure full traceability down to the material of the axle. The part number marking verifies the pivot pin. The lot number identifies the material batch from which it was produced. That way every customer can be assured they are using genuine Expander System pivot technology.. “We have ensured that the dot pin marking does not compromise the quality in any way,” says Jonny Wiberg, Engineer at Expander. “It’s a valuable improvement for customers who demand full control in their applications.”

Any Expander System can be easily ordered online 24/7 using a CADEX online solution.

Will Lowry Editor t: +44 (0) 1727 814 509

Will joined Fastener + Fixing Magazine in 2007 and over the last 10 years has experienced every facet of the fastener sector – interviewing key figures within the industry and visiting leading companies and exhibitions around the globe. Will manages the content strategy across all platforms and is the guardian for the high editorial standards that the brand is renowned.