Through the investigation elongation rate and "Bush-Bush distance changes" of the Schaeffler B8 automotive engine busher chain in the 200 h and 600 h internal test rig testing

after 200 h operation

the elongation rates are 0.15% and 0.17%

what’s more

the elongations are 0.215% and 0.22% respectively after 600 h testing;The maximum Bush-Bush distance change of 200 h and 600 h tests are 0.04 mm and 0.06 mm.The results show B8 chain has a high anti-abrasive wear characteristics and resistance to fatigue wear.