Recent Forum Topics

Root cause for increase in vibration

Hi Friends, In one of the roller press the vibration of motor and gearbox gradually increases.In motor it increases from 1.5 mm/sec to 4.5 mm/sec(Tripping is 5 mm/sec).Dominant peak is at 1XRPM of Motor.During this scenario we change bearings in flexible coupling and the vibration gets drops in both motor and G.B. Again after two to three months the vibration increases and again we change the flexible coupling bearing.This is happening from last one year and we already changed the bearings...Read More...
Last Reply By Michael Meehan, CMRP, CRL · First Unread Post

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High 2X Piston Compressor.

Raul Rios
This is a Betico piston compressor which manifests 2X very high radially measured in its bearings. What is the reason? Is it a problem with the crankshaft? I do not know if the compressor has two or four pistons. Data of interest: 1X Motor: 1750 cpm 1X Compressor: 1023 cpm Drive: Pulleys. Thanks in advance for your comments. Rául Ríos.Read More...
Dear All, can any one support me in this problem: we have one Siemens compressor centrifugal single stage integrally geared observed a high vibration in radial tilting pad bearing in pinion shaft compressor side without any changes in axial displacements? ----------------------- Actions for inspection: *IGV & Impeller are ok but found amount of water insuction spool passing from the demister. *Gears teeth & backlash are ok. *Clearances are checked for Radial tilting pad bearings of...Read More...