32
* 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.
Table 33 — High-Static Drive Data, 60 Hz — English
UNIT
524J*07A/H
524J*08A/H
524J*12A/H
524J*14A
524J*16A/H
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)
3.4-4.4
3.4-4.4
3.4-4.4
3.7-4.7
4.3-5.3
Pulley Factory Setting
Full Turns Open
2.5
2.5
2.5
3.0
3.0
FAN DRIVE
Pulley Pitch Dia (in.)
7.0
6.0*
6.0
7.4
7.9
Pulley Bore (in.)
1
1
1
1-7/16
1-7/16
Belt No. — Section
1—A
1—A
1—A
1—B
1—B
Belt Pitch (in.)
41.3
37.3
37.3
39.8
39.8
FAN SPEEDS (RPM)
Factory Setting
961
1121
1121
979
1060
Range
838-1084
978-1200*†
978-1200†
873-1096
950-1171
Max Allowable Speed (rpm)
1200
1200
1200
1200
1200
Change per 1/2 Turn of
Moveable Motor Pulley Flange
24.6
28.7
28.7
19.4
18.4
MAX FULL TURN FROM CLOSED
POSITION
5
5
5
6
6
SHAFTS CENTER DISTANCE (IN.)
10.44-12.32
10.44-12.32
10.44-12.32
10.44-12.32**
9.16-10.99
Table 34 — Standard Drive Data, 60 Hz — SI
UNIT
524J*07A/H
524J*08A/H
524J*12A/H
524J*14A
524J*16A/H
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)
61.0-86.4
71.1-96.5
86.4-111.8
71.1-96.5
71.1-96.5
Pulley Factory Setting
Full Turns Open
2.5
2.5
2.5
2.5
2.5
FAN DRIVE
Pulley Pitch Dia (mm)
224
224
224
229
229
Pulley Bore (mm)
25.4
25.4
25.4
36.5
36.5
Belt No. — Section
1—A
1—A
1—A
1—A
1—A
Belt Pitch (mm)
1024
1049
1074
1074
1074
FAN SPEEDS (R/S)
Factory Setting
9.5
10.8
12.7
10.5
10.5
Range
7.8-11.1
9.2-12.4
11.1-14.4
9.0-12.1
9.0-12.1
Max Allowable Speed (r/s)
20.0
20.0
20.0
20.0
20.0
Change per 1/2 Turn of
Moveable Motor Pulley
Flange
0.327
0.327
0.328
0.318
0.318
MAX FULL TURN FROM CLOSED
POSITION
5
5
5
5
5
SHAFTS CENTER DISTANCE (MM)
265-313
265-313
265-313
265-313
265-313
