27
Table 9E -- Medium--Static Drive Data, 60 Hz — SI
UNIT
524J*25A
524J*25H
524J*28A
524J*30A
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)
109.2---134.6
109.2---134.6
109.2---134.6
Pulley Factory Setting
Full Turns Open
3.0
3.0
3.0
FAN DRIVE
Pulley Pitch Dia (mm)
239
239
239
Pulley Bore (mm)
36.5
49.2
49.2
Belt No. — Section
1—B
2—B
†
2—B
†
Belt Pitch (mm)
1062
(2) 986
(2) 1011
(2) 986
(2) 1011
FAN SPEEDS (r/s)
Factory Setting
14.7
14.7
14.7
Range
13.3---16.4
13.3---16.4
13.3---16.4
Max Allowable Speed (r/s)
20.0
18.3
18.3
Change per
1
/
2
Turn of
Moveable Motor Pulley
Flange
0.255
0.255
0.255
MAX FULL TURNS FROM
CLOSED POSITION
6
6
6
SHAFTS CENTER DISTANCE (mm)
232---279
169---240
169---240
†
Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
Table 9F -- High--Static Drive Data, 60 Hz — SI
UNIT
524J*25A
524J*25H
524J*28A
524J*30A
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)
109.2---134.6
109.2---134.6
109.2---134.6
Pulley Factory Setting
Full Turns Open
3.0
3.0
3.0
FAN DRIVE
Pulley Pitch Dia (mm)
188
203
†
203
Pulley Bore (mm)
36.5
49.2
49.2
Belt No. — Section
2—B
2—B
2—B
Belt Pitch (mm)
935
935
960
FAN SPEEDS (r/s)
Factory Setting
18.6
17.1
17.1
Range
16.9---20.0
†
14.6---17.9
14.6---7.9
Max Allowable Speed (r/s)
20.0
18.3
18.3
Change per
1
/
2
Turn of
Moveable Motor Pulley
Flange
0.323
0.278
0.278
MAX FULL TURNS FROM
CLOSED POSITION
6
6
6
SHAFTS CENTER DISTANCE (mm)
207---255
169---240
169---240
†
It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT exceed 20 r/s
524J
Summary of Contents for 524J Series
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