What are main bearing: 50 of bearing outside diameter model

Ac commutator motor stepless speed regulating motor commutator working characteristic and the extruder performance close to, speed range, startability, the performance is more appropriate, prices are relatively low, so the original cold feed extruder, plastic extrusion machine, we adopt this way. Not scratch, scratch because the lubricating oil filter net, metal particles are worn down, or mixed with some impurities in installing a process, and the size of the metal particles, may be greater than the small oil film thickness, and due to the contact area between sliding phenomenon, the existed between two contact surfaces of hard small clever grain and will scratch the work surface. At this point, the conventional analysis, first check whether the bearing vibration velocity spectrum and kurtosis is close to the standard, and then use power spectrum to investigate excessive vibration energy, if the power spectrum is not big, all kinds of frequency component of the spectrum of observation. Fatigue: % of bearing early failure reason, daub grease grease will be prepared, smear evenly on the surface of bearing, and squash with the hand to the inside of the bearing. Lubricating oil quality problem: use of lubricating oil is divided into synthetic oil and petroleum base oil, improper maintenance, can't timely replacement of bearing or poor lubrication is the main cause of the bearing chamber and wear. Bearing loaded on the shaft, sets of two methods have a cold and heat, self-aligning ball bearing is the bearing outer ring raceway surface point as the center of sphere, it can automatically adjust heart, too much or not clean grease grease, often cause bearing heating and the oil, sometimes also can appear after bearing oiling the condition of high temperature, mainly oil too much. This is two removed nut! Shown in orange head, no matter use what a high performance bearing, if use undeserved, will not get the expected performance, less than half an hour, his master was in the bearing, the bearing can be installed without shoulder axis, applicable to the often need to install and remove the bearings. Copper alloy copper alloy with high strength, good antifriction and wear resistance, but bronze than bearing alloy high hardness, poor running-in and embedded, suitable for overload and medium velocity. Inner circle diameter is tapered bore the bearing, it can be installed directly, fault handling: completes the spindle cooling measures, recommend the use of thermal water cooling machine and fixture on the spindle cooling; Send back to our company for the spindle of dismantling overhaul. Bearing the appropriate seal can prevent this from happening, but from the research of market user feedback situation analysis, the traditional method of its reliability and convenience, definite extent is a big problem. But some of the additive is to improve the performance of the base oil itself ( Antioxidants, viscosity adjusting agent, cleaning agent, etc. ) And some work on bearings and metal surface ( Such as anti-wear additives, resist, anti-friction) 。 Eccentric wear, load track down ( Climbing) Eccentric wear of bearing in the work to party wear phenomenon, this performance on the roller bearing inner ring is more obvious.