Did you know that the peak mileage for US railroads occurred back in 1916? Today, the mileage total of all combined railroads is less than 170,000. Rails used to be joined and bolted together, as opposed to the welding approach used today.
Torque means distance and force, and is a standard term for industries like the railroad industry that need to measure precisely how much force is being exerted on different joints and sections. A torque wrench chart is something that individuals working with industrial tools use to figure out how much torque value to use for the part.
For example, if you have a one inch diameter and a 60 lb. Torque value for use, the torque wrench chart says that the torque reading on the instruments should be 45 lb. Torque wrench charts are usually needed when extensions or adaptors are used with a torque wrench, since they increase the torque range and a formula needs to be used to compensate.
Torque bleeding, which is when the nut from a bolt connect assembly comes loose, occurs often in the railroad industry. This can be potentially disastrous, since pieces that come too loose have the potential to weaken materials and potentially cause accidents when any extra force is applied to them. High tensile bolt connections are also used on slew rings bearings, masts, jobs, and tower crane points, in addition to railways.
A hydraulic torque wrench is one tool that can be used to tighten a connection. This tool is applied directly to nuts, or applied using an impact socket. It exerts torque and is more accurate and quieter than a pneumatic torque wrench.
Sometimes, the issue is not a nut being too loose, but rather, deteriorating. In areas that are damp or wet, industrial bolt deterioration is especially likely. It is often difficult to remove these bolts since they frequently are located in out of the way, cramped, or dangerous places. The usual tool for this procedure is a hydraulic nut splitter, which cuts the face of the nut.