Gorman-Rupp Pumps 612L20-B 814882 and up - Manual (Page 13)

OM−01395 60 SERIES
PAGE B − 6 INSTALLATION
MISALIGNED:
SHAFTS
NOT PARALLEL
MISALIGNED:
SHAFTS
NOT IN LINE
ALIGNED: SHAFTS
PARALLEL AND
SHEAVES IN LINE
Figure B−5. Alignment of V-Belt Driven
Pumps
Tighten the belts in accordance with the belt manu-
facturer’s instructions. If the belts are too loose,
they will slip; if the belts are too tight, there will be
excessive power loss and possible bearing failure.
Select pulleys that will match the proper speed ra-
tio; overspeeding the pump may damage both
pump and power source.
Do not operate the pump without the
guard in place over the rotating parts.
Exposed rotating parts can catch cloth-
ing, fingers, or tools, causing severe in-
jury to personnel.
V-Belt Jack Shaft Drives
If the pump is to be driven at speeds exceeding
1050 rpm, the V-belts must operate through a jack
shaft arrangement to protect the shaft bearings
from excessive stress. Failure to use a jack shaft on
high speed applications will result in premature
shaft bearing failure.