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Table 9C — High-Static Drive Data, 60 Hz — English
*Values for 3-phase motor shown. For single-phase motor, pulley pitch diameter is 7 in. and result-
ing fan speed is 837-1096 rpm.
†It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT exceed
1200 rpm.
**575-v unit has a center distance of 9.16-10.99.
Table 9D — Standard Drive Data, 60 Hz — SI
*Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
40RM
40RMS
034
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.) 3.4-4.4 3.4-4.4 3.4-4.4 3.4-4.4 3.7-4.7 4.3-5.3 4.3-5.3 4.3-5.3 4.3-5.3
Pulley Factory Setting
Full Turns Open
2.5 2.5 2.5 2.5 3.0 3.0 3.0 3.0 3.0
FAN DRIVE
Pulley Pitch Dia (in.) 7.0 6.0* 6.0 6.0 7.4 7.9 7.4 8.6 8.6
Pulley Bore (in.) 11111
7
/
16
1
7
/
16
1
7
/
16
1
15
/
16
1
15
/
16
Belt No. — Section 1—A 1—A 1—A 1—A 1—B 1—B 2—B 2—B 2—B
Belt Pitch (in.) 41.3 37.3 37.3 37.3 39.8 39.8 36.8 37.8 37.8
FAN SPEEDS (rpm)
Factory Setting 961 1121 1121 1121 979 1060 1118 1024 1024
Range 838-
1084
978-
1200*†
978-
1200†
978-
1200†
873-
1096
950-
1171
1014-
1200†
873-
1075
873-
1075
Max Allowable Speed (rpm) 1200 1200 1200 1200 1200 1200 1200 1100 1100
Change per
1
/
2
Turn of
Moveable Motor Pulley
Flange
24.6 28.7 28.7 28.7 19.4 18.4 19.4 16.7 16.7
MAX FULL TURNS FROM
CLOSED POSITION
555566666
SHAFTS CENTER DISTANCE (in.) 10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32**
9.16-
10.99
8.16-
10.02
6.67-
9.43
6.67-
9.43
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
40RM
40RMS
034
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm) 61.0-
86.4
71.1-
96.5
71.1-
96.5
86.4-
111.8
71.1-
96.5
71.1-
96.5
94.0-
119.4
109.2-
134.6
109.2-
134.6
Pulley Factory Setting
Full Turns Open
2.5 2.5 2.5 2.5 2.5 2.5 3.0 3.0 3.0
FAN DRIVE
Pulley Pitch Dia (mm) 224 224 224 224 229 229 239 279 279
Pulley Bore (mm) 25.4 25.4 25.4 25.4 36.5 36.5 36.5 49.2 49.2
Belt No. — Section 1—A 1—A 1—A 1—A 1—A 1—A 2—B 2—B* 2—B*
Belt Pitch (mm)
1024 1049 1049 1074 1074 1074 1062
(2) 1087
(2) 1113
(2) 1087
(2) 1113
FAN SPEEDS (r/s)
Factory Setting 9.5 10.8 10.8 12.7 10.5 10.5 12.9 12.5 12.5
Range 7.8-11.1 9.2-12.4 9.2-12.4 11.1-14.4 9.0-12.1 9.0-12.1 11.3-14.4 11.4-14.0 11.2-13.9
Max Allowable Speed (r/s) 20.0 20.0 20.0 20.0 20.0 20.0 20.0 18.3 18.3
Change per
1
/
2
Turn of
Moveable Motor Pulley
Flange
0.327 0.327 0.327 0.328 0.318 0.318 0.255 0.218 0.218
MAX FULL TURNS FROM
CLOSED POSITION
555555666
SHAFTS CENTER DISTANCE (mm) 265-313 265-313 265-313 265-313 265-313 265-313 232-279 169-240 169-240