Function of the coupling positioning plate in reciprocating compressors
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As the title suggests, the unit’s reciprocating compressor has been relocated; during installation, it was found that the positioning plate was missing. It’s from Shenyang Yuanda, and upon checking the drawings, no dimensions for the positioning plate were provided. I would like to ask fellow sailors: what is the purpose of a positioning disk? I heard that the dimensions of such disks are precise to several mils – is that true? I’m waiting for an answer urgently
Axially positioned, it affects the axial play of the crankshaft as well as the clearance between the shaft shoulder and the bearing shells. It’s possible to process one
Positioning discs (which can also be in the form of arc-shaped strips) are generally made of bronze. It mainly serves to determine the axial position of the main shaft, as well as the role of each crank journal relative to the centerline of the cylinder. If there are no drawings, finding what’s needed on one’s own is a very tedious and troublesome task; it is recommended that the original poster consult the manufacturer or purchase spare parts from them.
The positioning plate serves only to facilitate the removal of the flywheel. Between the crankshaft and the flywheel connected to the motor, for compressors that need to be reinstalled after relocation, the dimensions do not need to be extremely precise; it is sufficient that the parallelism between the two sides is good