Alignment
Proper alignment is necessary for satisfactory performance. A flexible coupling will not make
up for poor alignment. Misalignment can result in:
• High bending moment on the crankshaft
• Large axial forces
• Excessive wear to the bearings
• And if severe, probable damage to various components
An Ariel compressor may be aligned by any of a number of acceptable methods such as:
• Face/peripheral
• Reverse indicator
• Across the disc pack
• Optical
• Laser
• Mechanical direct to computer
When aligning a unit some procedural concerns are:
• Soft foot (compressor and driver are not laying flat)
• Repeatable readings
• Which way indicator moves (plus or minus)
• Thermal growth
• Indicator sag
When properly aligned, the forces on the connected equipment will be at a minimum. This
will result in long bearing life and a smooth running unit. Consult Packager’s information for
alignment requirements.