Roller short description:
Bolts and nuts is an important part for excavator construction machinery .Excavator bolts and nuts generally use common thread, whose thread rise Angle is less than the equivalent friction Angle of thread pair, in order to meet the self-locking condition of thread pair. After the bolt is tightened, the friction between the bolt head and the nut support surface can also prevent loosening.
NOTES:Please contact us for the details!!!
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