bosch t1 0 120 689 503/508/512/513/514/515/520/530/532/533/535/571/573/505/526/552/506/542/567/511/548/566/546/517/522/527/540/569 alternator operating voltage：28v voltage regulation：28.5±0.2v max. output current(hot)：140a operating ambient：-40℃-90℃ max.speed(continuous)：8000r/min ratation:clockwise,viewing from drive end operating ambient：-40℃-90℃ operating speed：6000r/minmax.speed：8000r/min performance parameter： cold：u=27v n=1500r/min i≥80a u=27v n=6000r/min i≥162a hot：u=27v n=1500r/min i≥70a u=27v n=6000r/min i≥140a the alternator has eight paw-poles mounting dimensions can be customized. choice belt-pulley weight:15kg