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4

Shafts

Selected medium carbon steel SAE

1040 to SAE 1045 is turned,

ground and polished to provide

secure wheel and bearing contact.

Shafts are sized to run well below

the first critical speed.

Bearings

American made ball or roller bear-

ings provide a minimum average

life of 75,000 hours at maximum

speeds, equal to eight hours a day,

365 days a year, for 25 years.

5

6

7

9

11

13

15

17

19

21

23

26

29

33

WF

X

X

X

X

X

X

X

X

X

X

LS

X

X

X

X

X

X

X

X

X

X

X

X

SQI

X

X

X

X

X

X

X

X

D/16A

X

X

X

X

X

X

X

X

X

X

Chicago’s Industrial Centrifugal Fans

are constructed of rugged components

to provide longer life

Housings

Most fan sizes are available with

either Chicago Blower’s own versa-

tile square housing SQI, or fixed

scroll design, D/16A. Both fan

types are constructed of steel plate

continuously welded to form a

rugged stable housing. Heavy

gauge mounting flanges and stiff-

eners add additional rigidity.

Flanged outlet is standard except

for bottom discharge on some

sizes. Removable inlet coverplates

provide wheel access.

Housing/Wheel Availability

Wheels

Housings

Fan

Size

This Size 13 fan features

special insulation for

extreme temperatures

Chicago’s rugged D/16 fans are

available in heavier-duty Class

3 construction