Service life

Parallel

Misalignment

Mm

Zero setting and notation rules"

Remarks

Straight edge

Short shaft coupling. Machined outer diameter.

Machined on insides

Make due allowance for bearing end float in the machines.

Misalignment according to the figure is positive i. e. the difference is measured above on the motor side.

Measured

Directly

As

Dimension y

Feeler gauge

Radially measured value r

Make due allowance for bearing end float in the machines. (Zero set the dial indicator underneath if the pointer is resting on the pump half.)

Short shaft coupling Requires at least a good surface at measuring pointer. Machined on insides

For vertical location zero set the dial above. Measured value is read after rotating one half turn.

V=-5-

Feeler

Gauge

For vertical location zero set both dial indicators in the position shown, i. e. for radial deviation above and axial deviation underneath.

The dials are read after rotating one half turn

Make due allowance for bearing end float in the machines. If both dial gauges are placed with their pointers on the pump half, then zero setting should be carried out from underneath.

Radially measured value r

Short shaft coupling. Good surfaces at the measuring pointers

Y=ir

Radially measured

Zero set both dial gauges from above. The measurements rM and rP are read after rotating one half turn

Value

Value

Y=-

Coupling

Pin

Line C

Radially measured

Similar to method IV. Notice the position of the reference lines for calculating angular misalignment.

Long shaft couplings, i. e. couplings with distance between the coupling halves. Good surfaces at the measuring pointers

‘M

~2~

Zero set both dial gauges from above. The measurements rM and rp are read after rotating one half turn.

Vali

Value

Coupling

Pin