Superior bearing properties ensure built-in reliability.
All zinc alloys, particularly ZA-12 and ZA-27, demonstrate excellent bearing and
wear resistance qualities thanks to their high hardness and natural lubricity
characteristics. ZA alloy bearings should be considered wherever bronze
bearings are currently being specified. Although they generally operate best in
lubricated, high load, low speed applications under moderate temperature
conditions, they have also been successfully used in high speed, low load
applications.
ZA alloys are increasingly being used as direct substitutes for larger bronze
industrial bushings and bearings since they cost less and are up to 43%
lighter.
For smaller components, zinc's natural lubricity may contribute to lower
secondary fabrication costs by eliminating small bushings and wear inserts,
thus allowing greater design flexibility.