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Description / Abstract:
This standard applies to the dimensions for all types of shaft
couplings and shaft runout tolerances for hydraulic turbines and
generators. Shafts and couplings included in this standard are used
for both horizontal and vertical connections between generators and
turbines in hydroelectric installations.
Purpose
The 1987 standard applied only to integrally forged shafts.
Present industry practice involves use of other types of shafts.
This revision provides dimensions and tolerances for all types of
shafts and couplings to assist in ensuring correct installation in
hydroelectric applications