Refrigeration Compressors

welded steel crankcase : low in weight gas tight and impact proof smooth internal surfaces guarantee good oil condition, bearing surfaces of the high quality nodular cast iron crankshaft are ground to fine tolerances.main bearings are white metal lined steel backed bushes, pressed into the cast iron bearing covers. Intermediate bearing blocks are provided with split type bearing shell of the same type. Each crankshaft is dynamically balanced together with the counter weights, interchangeable cylinder liners are made of finegrained, centrifugally cast, alloy iron. Fine boring and honing results in a mirror smooth running surface. A hydraulic mechanical suction valve lifting mechanism on each individual cylinder achieves loading and unloading. For unloading, the suction valve ring is lifted from its seat in the cylinder collar by spring tension. Admitting controlled oil pressure to the control piston, allowing the suction valve ring to descend on its seat effects loading or cylinder. 8. Discharge valve assembly : three concentric discharge valve rings ensure ample gas passage at low lifting height. The use of sinusoidal springs together with precision machined and lapped surface results in a trouble-free operation for a remarkably long time. Minimum inventory for spares since most parts are identical throughout the ch series compressors.