29
Table 9E — Medium-Static Drive Data, 60 Hz — SI
Table 9F — High-Static Drive Data, 60 Hz — SI
UNIT
40RUA*25
40RUS*25
40RUA*28
40RUS*28
40RUA*30
40RUS830
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 pully setting.
UNIT
40RUA*25
40RUS*25
40RUA*28
40RUS*28
40RUA*30
40RUS*30
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-
17.9
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.
