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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)
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)
* Values for 3-phase motor shown. For single-phase motor, pulley pitch
diameter is 178 mm and resulting fan speed is 14.0-18.3 r/s.
† It is possible to adjust drive so that fan speed exceeds maximum
allowable. DO NOT exceed 20 r/s.
** 575v unit has a center distance of 233-279.
Table 35 — Medium-Static Drive Data, 60 Hz — SI
524J*07A/H
524J*08A/H
86.4-111.8
86.4-111.8
2.5
224
25.4
1—A
1074
12.7
11.1-14.4
12.2-15.8
20.0
0.328
0.360
5
265-313
265-313
Table 36 — High-Static Drive Data, 60 Hz — SI
524J*07A/H
524J*08A/H
86.4-111.8
86.4-111.8
2.5
178
25.4
1—A
1049
16.0
14.0-18.1
16.3-20.0*†
20.0
0.410
0.478
5
265-313
265-313
33
524J*12A/H
86.4-111.8
2.5
2.5
203
203
25.4
25.4
1—A
1—A
1024
1024
14.0
14.0
12.2-15.8
20.0
20.0
0.360
5
5
265-313
524J*12A/H
86.4-111.8
2.5
2.5
152*
152
25.4
25.4
1—A
1—A
947
947
18.7
18.7
16.3-20.0†
20.0
20.0
0.478
5
5
265-313
524J*14A
524J*16A/H
86.4-111.8
94.0-119.4
2.5
3.0
208
218
36.5
36.5
1—A
1—B
1049
1062
13.7
14.0
11.9-15.4
12.4-15.7
20.0
20.0
0.352
0.278
6
6
265-313
265-313
524J*14A
524J*16A/H
94.0-119.4
109.2-134-.6
3.0
3.0
188
201
36.5
36.5
1—B
1—B
1011
1011
16.3
17.7
14.4-18.3
15.8-19.5
20.0
20.0
0.323
0.307
6
6
265-313**
232-279
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