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UNIT
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (in.)
Pulley Bore (in.)
Belt No. — Section
Belt Pitch (in.)
FAN SPEEDS (RPM)
Factory Setting
Range
Max Allowable Speed (rpm)
Change per 1/2 Turn of
Moveable Motor Pulley Flange
MAX FULL TURN FROM CLOSED
POSITION
SHAFTS CENTER DISTANCE (IN.)
* Values for 3-phase motor shown. For single-phase motor, pulley pitch
diameter is 7 in. and resulting fan speed is 837-1096 rpm.
† It is possible to adjust drive so that fan speed exceeds maximum
allowable. DO NOT exceed 1200 rpm.
** 575v unit has a center distance of 9.16-10.99.
UNIT
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)
Pulley Bore (mm)
Belt No. — Section
Belt Pitch (mm)
FAN SPEEDS (R/S)
Factory Setting
Range
Max Allowable Speed (r/s)
Change per 1/2 Turn of
Moveable Motor Pulley
Flange
MAX FULL TURN FROM CLOSED
POSITION
SHAFTS CENTER DISTANCE (MM)
Table 33 — High-Static Drive Data, 60 Hz — English
524J*07A/H
524J*08A/H
3.4-4.4
2.5
7.0
1
1—A
41.3
961
838-1084
978-1200*†
1200
24.6
5
10.44-12.32
10.44-12.32
Table 34 — Standard Drive Data, 60 Hz — SI
524J*07A/H
524J*08A/H
61.0-86.4
71.1-96.5
2.5
224
25.4
1—A
1024
9.5
7.8-11.1
9.2-12.4
20.0
0.327
5
265-313
265-313
524J*12A/H
3.4-4.4
3.4-4.4
2.5
2.5
6.0*
6.0
1
1
1—A
1—A
37.3
37.3
1121
1121
978-1200†
1200
1200
28.7
28.7
5
5
10.44-12.32
524J*12A/H
86.4-111.8
2.5
2.5
224
224
25.4
25.4
1—A
1—A
1049
1074
10.8
12.7
11.1-14.4
20.0
20.0
0.327
0.328
5
5
265-313
32
524J*14A
524J*16A/H
3.7-4.7
4.3-5.3
3.0
3.0
7.4
7.9
1-7/16
1-7/16
1—B
1—B
39.8
39.8
979
1060
873-1096
950-1171
1200
1200
19.4
18.4
6
6
10.44-12.32**
9.16-10.99
524J*14A
524J*16A/H
71.1-96.5
71.1-96.5
2.5
2.5
229
229
36.5
36.5
1—A
1—A
1074
1074
10.5
10.5
9.0-12.1
9.0-12.1
20.0
20.0
0.318
0.318
5
5
265-313
265-313
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