Technology explained –
the service life of chains
Temperature
Speed Total load
Load
Polygon effect
Impact load
Environmental influences
Wear resistance / factors involved
» Bearing pressure
» Friction in the chain link
» Lubrication
» Number of flexures
» Size of the flexures
Fatigue properties / factors involved
» Number of load cycles
» Number of shock loads
» Ambient conditions
The wear resistance of the roller chains is based on:
» Perfectly cylindrical round parts
» Seamless bushes
» Coating of the bushes and pins
» Use of alloyed materials
» Optimised hardening processes
» Pre-stretching
The fatigue strength of the roller chains is based on:
» Selected materials
» Precision of the parts
» Optimised press fit of the pins and bushes
» Shot peening
» Optimised plate hardness and link geometry with
wide waist, especially in the critical cross-section
» Shock resistant rollers
Service life
14 |
