Compressor radial bearing
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Please discuss the requirements for the contact surface of the compressor radial bearing shells and the amount of interference.
The contact area must be no less than 80%, with a wafer-to-substrate pressure of 0.02–0.04 mm
That’s not true at all; it’s too imprecise. So, how much of that upper tile is in contact during actual operation? The exact location must be specified. Moreover, the tension of 0.02–0.04 mm is only for reference. For units that are frequently disassembled for maintenance, this level of tension is far from sufficient. By adding the glue thickness, 0.01–0.02 mm of tension can be removed. Therefore, the tension level should still be determined based on the actual conditions of the machine unit. New units don’t matter anymore. But we can’t go overboard either; I think 0.03–0.06 mm is also a suitable range!
My experience: The contact area is around 85%, and the clamping force per tile is generally 3 to 5 levels.
1. The contact area is theoretically greater than 80%. It means that there should be no less than 60° on either side of the lowest point (with the contact surface being greater than 120°). 2. The theoretical adhesion force is 0.01-0.03 mm. It refers to the tension after removing a thickness of 0.02–0.03 mm (based on empirical values) from the glued surface.
It varies from manufacturer to manufacturer; it’s best to ask the manufacturer. For example, for tiltable bearings as well, Shenmu requires a tightening force of 0–0.02 mm, while Shaanxi Guzu requires 0.05–0.08 mm. Siemens turbine Series 2 and Series 3 are also different.
Check random materials; it’s all there. First, thoroughly understand the random materials, and then discuss them together.
The guy on the third floor; it doesn’t seem like there’s any sealing compound applied at the joint of the bearing cover yet. What was said on the 2nd floor is absolutely correct.
Different manufacturers have different requirements; generally, the tension is between 0.01 and 0.03 mm
Different devices have varying requirements; even the requirements for bearings differ. For example, bearings used in large motors, being spherical in shape, require a gap rather than an interference fit, so it’s best to determine the appropriate type based on the equipment’s specifications.