Crankshaft

Crank is one of the main parts of diesel generator sets, diesel and its role is to bring together the work done by each cylinder after the rotary motion mode output. For multi-cylinder Cummins diesel generator, it has to withstand continuous power stroke of the piston rod came through the force, transforming it into the torque transmission mechanism to pass, while also pushing through the cylinder piston rod inspiratory , compression and exhaust, and drive the gas distribution sector and other auxiliary devices. Crankshaft - flywheel assembly structure, usually divided into the main journal, rod journal, crank, front axle (ie, the free end of the crankshaft), rear (crankshaft output) flange and balancing blocks (also known as Backing bearings weight) and other components .
Multi-cylinder Cummins diesel generator is a high-speed rotation of the crankshaft axis. Which bear a changing gas pressure and inertial force and the centrifugal force generated when the rotation effect, therefore, requires that it has sufficient strength and stiffness, but also to wear, good lubrication, and to be axially fixed reliably limit axial positioning or displacement, in addition, crank arrangement should be reasonable in order to meet the diesel engine firing order and the smooth operation requirements.Especially for bearing detection, careful attention to whether the value of unstable vibration swing (recommended analog pointer instrument, you can observe the very obvious), if there is swing, heralded the emergence of unstable vibration signals, acceleration also great, especially the speed while increasing, is likely to exist bearing "playing sets of" fault. KOYO bearing inspection, bearings, skf bearing, nsk bearings, fag bearings, IKO needle roller bearings
For new equipment, testing and acceptance, although the vibration is very small, in line with national standards, but in the bearing parts appear small amplitude vibration swing phenomenon, eliminate bearing with the problem (playing sets), the most likely Slewing bearing geometry problems, such as Bearings Rims oval, rolling through the major axis position, the gap may be due to reduced rolling moment caused by stuck up rolling continue to squeeze, so that sliding friction rolling, rolling each one will appear in this sliding friction , resulting in unstable signal appears. This problem is detected Shanxi 220KW new motor encountered, the disintegration of detectors to detect bearing, proved entirely correct judgment. KOYO bearing inspection, bearings, skf bearing, nsk bearings, fag bearings, IKO needle roller bearings