37
* 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 37 — Medium-Static Drive Data, 60 Hz — SI
UNIT
40RUA/Q
07
40RUA/Q/S
08
40RUS
10
40RUA/Q/S
12
40RUA/S
14
40RUA/Q/S
16
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)
86.4-111.8
86.4-111.8
86.4-111.8
86.4-111.8
86.4-111.8
94.0-119.4
Pulley Factory Setting
Full Turns Open
2.5
2.5
2.5
2.5
2.5
3.0
FAN DRIVE
Pulley Pitch Dia (mm)
224
203
203
203
208
218
Pulley Bore (mm)
25.4
25.4
25.4
25.4
36.5
36.5
Belt No. — Section
1—A
1—A
1—A
1—A
1—A
1—B
Belt Pitch (mm)
1074
1024
1024
1024
1049
1062
FAN SPEEDS (R/S)
Factory Setting
12.7
14.0
14.0
14.0
13.7
14.0
Range
11.1-14.4
12.2-15.8
12.2-15.8
12.2-15.8
11.9-15.4
12.4-15.7
Max Allowable Speed (r/s)
20.0
20.0
20.0
20.0
20.0
20.0
Change per 1/2 Turn of
Moveable Motor Pulley
Flange
0.328
0.360
0.360
0.360
0.352
0.278
MAX FULL TURN FROM CLOSED
POSITION
5
5
5
5
6
6
SHAFTS CENTER DISTANCE (MM)
265-313
265-313
265-313
265-313
265-313
265-313
Table 38 — High-Static Drive Data, 60 Hz — SI
UNIT
40RUA/Q
07
40RUA/Q/S
08
40RUS
10
40RUA/Q/S
12
40RUA/S
14
40RUA/Q/S
16
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)
86.4-111.8
86.4-111.8
86.4-111.8
86.4-111.8
94.0-119.4
109.2-134-.6
Pulley Factory Setting
Full Turns Open
2.5
2.5
2.5
2.5
3.0
3.0
FAN DRIVE
Pulley Pitch Dia (mm)
178
152*
152
152
188
201
Pulley Bore (mm)
25.4
25.4
25.4
25.4
36.5
36.5
Belt No. — Section
1—A
1—A
1—A
1—A
1—B
1—B
Belt Pitch (mm)
1049
947
947
947
1011
1011
FAN SPEEDS (R/S)
Factory Setting
16.0
18.7
18.7
18.7
16.3
17.7
Range
14.0-18.1
16.3-20.0*†
16.3-20.0†
16.3-20.0†
14.4-18.3
15.8-19.5
Max Allowable Speed (r/s)
20.0
20.0
20.0
20.0
20.0
20.0
Change per 1/2 Turn of
Moveable Motor Pulley
Flange
0.410
0.478
0.478
0.478
0.323
0.307
MAX FULL TURN FROM CLOSED
POSITION
5
5
5
5
6
6
SHAFTS CENTER DISTANCE (MM)
265-313
265-313
265-313
265-313
265-313**
232-279
