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Wenzhou Shengyi Machinery Manufacturing Co., Ltd. is a professional manufacturer of compressors and their spare parts.
Bearing
The main and connecting rod bearings should be split-sleeve, steel-backed, babbitted
insert type. Antifriction bearing shall be used for compressor rating less than
150kW. As per API-618 trapper roller bearings are used as the main bearing for
compressor rating less than 150kW.
The crosshead pin should have a replaceable bush bearing.
Crank Shaft曲轴
Larger compressors, normally above 150 kW(200 hp), the crankshaft is made up of
forged steel. Compressor less than or equal to 150kW, the crankshaft is made up of
ductile iron.
The Figure shows a drilled crankshaft.
Crankshafts should have removable balance weights to compensate the rotary unbalance
as well as reciprocating unbalances. The crankshaft should be dynamically balanced
when above 800 rpm.
Different types of rings are used for lubricated or non-lubricated service. In the case of non-lubricated service, the rings shall have good self-lubricated property. Piston rings are made up of PEEK and other fluorocarbon compounds.
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