Things to note when selecting riding bolts (u-bolts)

Time: 2014-10-28 Source:Shanghai Xiangsheng Fasteners Co., Ltd.

Riding bolts are generally used on trucks. They are used to stabilize the chassis and frame of the car. For example, the leaf springs are connected by riding bolts. So, what should you pay attention to when choosing riding bolts? The performance grade of riding bolts is an internationally accepted standard. Riding bolts of the same performance grade have the same performance regardless of whether their materials or origins are different. Therefore, in terms of design, only the performance grade can be selected. In fact, when selecting riding bolts, in addition to considering strength, In addition, the materials and their surface treatment requirements must also be considered. If the operating environment is humid and corrosive, then it is necessary to consider these issues. Sometimes the materials need to use stainless steel, or indicate bright chromium plating (in addition to rust prevention, but also for decoration), or blackening, galvanizing, etc. Sometimes it is also necessary to consider the requirements for batch installation and use, such as the roughness of the riding bolt threads. During automobile installation, automatic or semi-automatic installation tools are mostly used to install screws. If the surface of the screw is too rough, when the installation tool reaches the set torque, the axial preload will be generated. There is a big difference between the axial preload force and the axial preload force generated by smooth threads. When installing Sinotruk riding bolts (u-bolts), lubricant is usually applied to the threads to prevent corrosion and to reduce the difference in friction caused by the difference in roughness on the thread surface.