Hamilton ZPI Ball Bearing
Hamilton has launched the Zero-Fix Precision Integrated (ZPI) Ball Bearing, removing extra contact points that cause friction and long-term wear.
Traditional imperial axle bearing systems rely on extra parts — tophats, bushings, spanners, adapters — that all work together to hold everything in place. However, every added piece creates another surface that can rub, shift or wear down over time. And when parts start rubbing where they shouldn’t, performance slowly slips.
The Zero-Fix Precision Integrated (ZPI) Ball Bearing removes extra contact points that cause friction and long-term wear.
ZPI eliminates the excess. By integrating everything into one precision-built bearing, it removes those extra contact points that cause friction and long-term wear. Fewer parts. Less rubbing. Less breakdown. Just smoother rolling from day one — and performance that holds up for the long haul.
This streamlined design delivers three major performance breakthroughs:
- Measurably easier movement. Independent testing shows a 10–14% reduction in both start-up and maintain rolling force. Loads move easier from the first push and stay easier in motion — improving maneuverability and reducing operator strain under real-world conditions.
- Dramatically longer life. By allowing the wheel to rotate efficiently around a stationary inner ring, ZPI reduces fretting and ball sliding — two primary causes of premature bearing failure. Durability testing revealed more than a 40% increase in bearing life, directly extending the service life of the caster and wheel assembly.
- Simplified ownership. Fully sealed and maintenance-free, ZPI eliminates relubrication cycles and reduces downtime in harsh industrial environments. Fewer components also mean fewer SKUs, simpler assembly, improved traceability and cleaner supply chain management.
Hamilton is rolling ZPI into approximately 80% of its caster and wheel lineup — no retrofits, no redesigns, no price increases. Just better engineering built in.
The Zero-Fix Precision Integrated (ZPI) Ball Bearing eliminates relubrication cycles and reduces downtime.
