GHH RAND CF75D8 - Belt Drive

Installation Manual Series CF (excluding encapsulated screw compressors) 23042013 Rev. A / May 2007 22 of 60
4.9.2 Belt drive
Pulleys should be used with a balancing grade of
G 2.5 to DIN ISO 1940 respectively Q 2.5 to VDI
2060, balanced according to the “half-key con-
vention” to DIN ISO 8821.
Pulley has to be locked to avoid axial displace-
ment.
Following chart helps to calculate the maximum
permissible dynamic radial load (F
R, dyn, max
) of
the particular compressor.
Please contact our „Customer
Support“ for technical assistance
for the design of belt drive.
Maximum permissible radial load
Maximum permissible radial load at
end of fitting key
specific value of
distance
F
R,0
*
a
Type
[N]
[mm]
CF75D8 2 400 50
CF90D3 3 800 56
CF128R 7 400 125
CF180R 14 100 165
Calculation of permissible dynamic radial load:
end of pin
end of fitting key
F
R,dyn, ma x
F
R,0
x
a
x
a
Note
( )
[ ] mminx
xa
a
FF
RdynR
+
= *
0,max,,