| Fan Machining Options by Diameter |
< 12"
|
12" - 18"
|
18" - 25"
|
> 25"
|
| Bore with Keyway and Set Screw(s) |
$24.00
|
$42.00
|
$64.00
|
$92.00
|
| Bore with Keyway and Split Hub |
92.00
|
112.00
|
132.00
|
150.00
|
| Bore & Cut Down Diameter (D) |
42.00
|
60.00
|
96.00
|
112.00
|
| Cut Down Overall Diameter (D) |
24.00
|
35.00
|
55.00
|
84.00
|
|
Mill Off or Taper Blade Width (A)
|
28.00
|
44.00
|
62.00
|
92.00
|
| Cut Down O.D. & Mill orTaper Blades |
52.00
|
79.00
|
117.00
|
176.00
|
| Add Supporting Ring to Top of Blades |
166.00
|
200.00
|
260.00
|
340.00
|
| Cut Down Hub Length (C) |
28.00
|
42.00
|
60.00
|
92.00
|
| Machine Off Hub & Face Backplate |
76.00
|
88.00
|
120.00
|
150.00
|
| Cast Steel Insert in Hib |
132.00
|
200.00
|
264.00
|
330.00
|
| Static Balance Bored Fan * |
40.00
|
68.00
|
82.00
|
132.00
|
| Dynamic Balance Bored Fan * |
180.00
|
250.00
|
300.00
|
400.00
|
| Mill Spaces in Backplate |
34.00
|
48.00
|
60.00
|
76.00
|
| Supply Threaded Pull Holes |
22.00
|
30.00
|
36.00
|
46.00
|
| Drill Concentric Mounting Holes |
36.00
|
48.00
|
60.00
|
76.00
|
MACHINING TOLERANCES: Tolerances are ± 1/8” on all dimensions except bore which is ±0.001”. Our Machine Department meets the Calibration Systems Requirements in MIL-STD-45662A.
BALANCING: Our aluminum castings are not balanced. We cast 356 Prime Alloy, producing a hardness of approximately Rockwell B-60, suitable for use on explosion-proof motors. The plastic fans we stock are not treated for use on explosion-proof motors. We do not recommend attaching balance weights to any plastic fan.