75
Table 23 —
Airfoil Fan Drive Centerline Distances in Inches (cont)
39M UNIT
SIZE
FAN
MODEL
NO.
MOTOR
SIZE
BHF/BHR
DBF/DBR
THF/THR
UBF/UBR
FAN SHAFT DIAM. (in.)
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
CLASS 1
CLASS 2
21W
AF 181
145T
21.2
22.1
18.3
19.3
17.5
19.0
21.2
22.0
1
11
/
16
1
15
/
16
182T
20.4
21.3
17.6
18.6
16.8
18.5
20.4
21.3
184T
20.4
21.3
17.6
18.6
16.8
18.5
20.4
21.3
213T
19.9
20.7
17.1
18.2
16.3
18.0
19.9
20.7
215T
19.9
20.7
17.1
18.2
16.3
18.0
19.9
20.7
254T
19.1
20.1
16.4
17.6
15.7
17.5
19.1
20.1
256T
19.1
20.1
16.4
17.6
15.7
17.5
19.1
20.1
AF 201
145T
22.3
22.9
18.8
19.7
18.7
19.6
22.3
22.9
1
11
/
16
1
15
/
16
182T
21.5
22.2
18.0
18.9
17.9
18.8
21.5
22.2
184T
21.5
22.2
18.0
18.9
17.9
18.8
21.5
22.2
213T
20.9
21.5
17.4
18.4
17.3
18.3
20.9
21.5
215T
20.9
21.5
17.4
18.4
17.3
18.3
20.9
21.5
254T
20.0
20.7
16.7
17.8
16.6
17.7
20.0
20.7
256T
20.0
20.7
16.7
17.8
16.6
17.7
20.0
20.7
284T
19.4
20.3
16.2
17.3
16.1
17.2
19.4
20.3
22T
AF 181
56
31.0
33.0
25.0
27.0
28.7
30.7
27.1
29.1
1
11
/
16
1
15
/
16
143T
31.0
33.0
25.0
27.0
28.7
30.7
27.1
29.1
145T
31.0
33.0
25.0
27.0
28.7
30.7
27.1
29.1
182T
30.5
32.5
24.5
26.5
28.3
30.3
26.6
28.6
184T
30.5
32.5
24.5
26.5
28.3
30.3
26.6
28.6
213T
30.1
32.1
24.2
26.2
28.0
30.0
26.1
28.1
215T
30.1
32.1
24.2
26.2
28.0
30.0
26.1
28.1
254T
29.7
31.7
23.8
25.8
27.7
29.7
25.6
27.6
256T
29.7
31.7
23.8
25.8
27.7
29.7
25.6
27.6
AF 201
56
33.2
35.2
28.1
30.1
30.9
32.9
30.5
32.5
1
11
/
16
1
15
/
16
143T
33.2
35.2
28.1
30.1
30.9
32.9
30.5
32.5
145T
33.2
35.2
28.1
30.1
30.9
32.9
30.5
32.5
182T
32.6
34.6
27.7
29.7
30.5
32.5
30.0
32.0
184T
32.6
34.6
27.7
29.7
30.5
32.5
30.0
32.0
213T
32.3
34.3
27.3
29.3
30.2
32.2
29.5
31.5
215T
32.3
34.3
27.3
29.3
30.2
32.2
29.5
31.5
254T
31.8
33.8
26.9
28.9
29.8
31.8
29.0
31.0
256T
31.8
33.8
26.9
28.9
29.8
31.8
29.0
31.0
284T
31.4
33.4
26.6
28.6
29.6
31.6
28.6
30.6
286T
31.4
33.4
26.6
28.6
29.6
31.6
28.6
30.6
25W
AF 201
145T
22.3
22.9
18.8
19.7
18.7
19.6
22.3
22.9
1
11
/
16
1
15
/
16
182T
21.5
22.2
18.0
18.9
17.9
18.8
21.5
22.2
184T
21.5
22.2
18.0
18.9
17.9
18.8
21.5
22.2
213T
20.9
21.5
17.4
18.4
17.3
18.3
20.9
21.5
215T
20.9
21.5
17.4
18.4
17.3
18.3
20.9
21.5
254T
20.0
20.7
16.7
17.8
16.6
17.7
20.0
20.7
256T
20.0
20.7
16.7
17.8
16.6
17.7
20.0
20.7
284T
19.4
20.3
16.2
17.3
16.1
17.2
19.4
20.3
AF 221
145T
28.8
29.6
25.7
26.8
25.5
26.6
28.8
29.6
1
15
/
16
2
3
/
16
182T
28.0
29.0
25.0
26.2
24.9
25.9
28.0
29.0
184T
28.0
29.0
25.0
26.2
24.9
25.9
28.0
29.0
213T
27.5
28.5
24.6
25.8
24.4
25.6
27.5
28.5
215T
27.5
28.5
24.6
25.8
24.4
25.6
27.5
28.5
254T
26.8
27.8
24.0
25.3
23.8
25.1
26.8
27.8
256T
26.8
27.8
24.0
25.3
23.8
25.1
26.8
27.8
284T
26.3
27.4
23.6
25.0
23.4
24.7
26.3
27.4
286T
26.3
27.4
23.6
25.0
23.4
24.7
26.3
27.4
