Slewing support is called "the joint of machine" in industrial production. Slewing support is widely used in various fields, including truck crane, railway crane, port crane and so on. The following is a brief introduction to the installation bolt requirements of slewing support:
1. The size of bolts used in slewing bearings shall conform to the requirements of GB/T5782-2000 and GB/T5783-2000, and the strength grade shall not be lower than the 8.8 grade specified in GB/T3098.1-2000, and the appropriate strength grade shall be selected according to the bearing force.
2. The size of nuts shall conform to GB/T6170-2000 and GB/T6175-2000, and their mechanical properties shall conform to GB/T3098.2-2000.
3. The way of bolt tightening according to the regulation of the main engine, should ensure a certain pre-tightening force, unless special provisions, the general pre-tightening force because of the bolt limit of 0.7 times. A little oil is allowed on the thread when tightening. Pre-tightening torque or pre-tightening force.