VIEW FULL VERSION: Link
Title: You Can Notice The Changing Factors Of China Mechanical Parts
Tags: China Mechanical Parts
Blog Entry: So, what parts do you do when you’re looking to replace hard-to-find bearings and related parts for older machines? Finding obsolete or hard-to-find-bearings and related parts is more advanced than ever before with today's search algorithms. But finding certain bearings, for instance very large bearings such as tunnel-boring 15-foot-diameter giants, is still a challenge Custom work is often the only option. To give you an example, a local elevator repair company working on a 100-year-old elevator contacted us for replacement parts. The roller chain and sprocket that were needed were just as old as the elevator, raising concerns that the parts wouldn't Be available anymore. The customer brought the parts in and, through our extensive line of partners, we were able to identify someone who still made the chain and had it in stock. No one mass-produced the sprocket anymore, but custom work was still An option. Our team was able to reverse-engineer specifications from the old sprocket itself. Those plans turned into a new sprocket that would fit the lift perfectly. When bearings and their related parts fail to work properly, all related processes have to shut down. Our goal is to improve machinery life, and when certain bearings or parts are no longer being mass produced, we're able to provide engineering assistance and custom China Mechanical Parts development to ensure our customer has the right part to keep their equipment rolling for years to come. Of course, there are other factors that contribute to bearing longevity, including proper design, internal clearance and more as we've outlined below. Application changes affect bearing design Rarely do we come across a bearing that has been improperly designed into an application, but it is possible if factors within the larger application change. How long a bearing lasts before it fails is known as bearing "service life". It is generally considered in hours and is based on load and speed conditions. Skidding and improper loading of the rolling elements will occur if they are too low. These issues will also occur with improper internal clearance. In all of these instances, early failure will Be the result. Early signs of failure Don’t ignore the early signs of bearing failure, specifically unusual noises or increased temperature. Abnormal bearing sounds are indicative of specific issues in the bearing application. For example, hearing a buzz to roar noise, where the loudness and pitch changes with speed indicating issues such as poor fit, deformed bearing rings, vibration of raceways, balls or rollers and Brainlinging or howling sounds generally indicate too large an internal clearance or poor lubrication on a cylindrical roller bearing. Crunching that is felt when the shaft is rotated by hand often indicates contamination of the raceways. A desirable bearing temperature is below 100 C. At start-up, the temperature will rise, but then stabilize at a temperature slightly lower than at start-up, but somewhere between 10 to 40 C higher than room temperature. Increased temperature is another early Sign of bearing failure. It is critical to isolate vibrations in associated equipment as they can cause uneven running and unusual noises.