CFM Guide for Machines |
Jointers |
| up to 6" diameter |
400 CFM |
| 6" to 12" diameter |
550 CFM |
| 12" to 20" diameter |
650 CFM |
| over 20" diameter |
900 CFM |
|
Horizontal Belt Sanders |
| up to 6", Head |
600 CFM |
Tail |
500 CFM |
| 6" to 9", Head |
700 CFM |
Tail |
500 CFM |
| 9" to 14", Head |
950 CFM |
Tail |
600 CFM |
| over 14", Head |
1300 CFM |
Tail |
700 CFM |
|
Disc Sanders |
| up to 12" |
400 CFM |
| 12" to 18" |
500 CFM |
| 18" to 26" |
600 CFM |
| 26" to 32" |
750 CFM |
| 32" to 38" |
1000 CFM |
| 38" to 48" |
1400 CFM |
|
Multiple Drum Sanders |
| up to 31" |
650 CFM |
| 31" to 49" |
900 CFM |
| 49" to 67" |
1300 CFM |
| 67" and over |
1600 CFM |
| Brush rolls (per roll) |
425 CFM |
** One
hood per drum is minimum ** |
|
Single Drum Sanders |
| up to 200 in² |
450 CFM |
| 200 to 400 in² |
600 CFM |
| 400 to 700 in² |
900 CFM |
| 700 to 1400 in² |
1250 CFM |
| 1400 to 2400 in² |
1600 CFM |
|
Band Saws |
| up to 2" blades |
450 CFM |
Tail |
450 CFM |
| 2-3" blade, Head |
450 CFM |
Tail |
700 CFM |
| 3-4" blade, Head |
700 CFM |
Tail |
900 CFM |
| 4-6" blade, Head |
700 CFM |
Tail |
1250 CFM |
| 6-8" blade, Head |
700 CFM |
Tail |
1550 CFM |
|
Swing Saws |
| up to 20" diameter |
500 CFM |
| over 20" diameter |
600 CFM |
|
Radial Saws |
| Top Hood |
550 CFM |
| Bottom Hood |
525 CFM |
|
Table Saws |
| up to 16" diameter |
500 CFM |
| 16" to 24" diameter |
600 CFM |
| over 24" diameter |
700 CFM |
| Variety with dado |
700 CFM |
|
Vertical Belt Sanders |
| up to 6" belt width |
600 CFM |
| 6" to 9" belt width |
700 CFM |
| 9" to 14" belt width |
950 CFM |
| over 14" belt width |
1300 CFM |
|
| Moulders,
Matchers and Sizers |
Bottom |
Top |
Left |
Right |
| up to 7" |
600 CFM |
700 CFM |
500 CFM |
500 CFM |
| 7" to 12" |
700 CFM |
900 CFM |
600 CFM |
600 CFM |
| 12" to 18" |
950 CFM |
1250 CFM |
700 CFM |
700 CFM |
| 18" to 24" |
1350 CFM |
1650 CFM |
1000 CFM |
1000 CFM |
| over 24" |
1650 CFM |
2000 CFM |
1300 CFM |
1300 CFM |
|
Single Planers and Surfacers |
| up to 20" knives |
950 CFM |
| 20" to 26" knives |
1300 CFM |
| 26" to 32" knives |
1650 CFM |
| 32" to 38" knives |
2000 CFM |
| over 38" knives |
2550 CFM |
|
Double Planers and Surfacers |
| up to 20", Bottom |
700 CFM |
Head |
900 CFM |
| 20"-26", Bottom |
950 CFM |
Head |
1300 CFM |
| 26"-32", Bottom |
1350 CFM |
Head |
1700 CFM |
| 32"-38", Bottom |
1650 CFM |
Head |
2050 CFM |
| over 38", Bottom |
1650 CFM |
Head |
2500 CFM |
|
Grinding Wheels |
| up to 9", up to 1½" wide
(4" outlet) |
500 CFM |
| 10" to 16", up to 2" wide
(5" outlet) |
700 CFM |
| 17" to 24", up to 3" wide
(6" outlet) |
1000 CFM |
| 25" to 30", up to 4" wide
(7" outlet) |
1400 CFM |
| 31" to 36", up to 5" wide
(8" outlet) |
1700 CFM |
|
Buffing and Polishing Wheels |
| up to 9", up to 1½" wide
(5" outlet) |
600 CFM |
| 10" to 19", up to 4" wide
(6" outlet) |
800 CFM |
| 20" to 24", up to 5" wide
(7" outlet) |
1050 CFM |
| over 24", up to 6" wide
(8" outlet) |
1450 CFM |
|
Self-Feed Table Rip Saws |
| up to 16", Top |
500 CFM |
Bottom |
550 CFM |
| over 16", Top |
500 CFM |
Bottom |
700 CFM |
| self-feed, no table |
700 CFM |
Bottom |
900 CFM |
|
Gang Rip Saws |
| up to 24", Bottom |
700 CFM |
Top |
500 CFM |
| 24"-36", Bottom |
950 CFM |
Top |
600 CFM |
| 36"-48", Bottom |
1300 CFM |
Top |
700 CFM |
| over 48", Bottom |
1600 CFM |
Top |
700 CFM |
|
Floor Sweeps |
| up to 6" diameter |
600 CFM |
| over 6", up to 7" diameter |
1200 CFM |
|
Area Conversion Table |
| Diameter in
Inches |
Square Inches |
Square Feet |
Circumference |
| Inches |
Feet |
| 1" |
0.7854 |
0.0054 |
3.1416 |
0.2618 |
| 1½" |
1.7670 |
0.0123 |
4.712 |
0.3927 |
| 2" |
3.1420 |
0.0218 |
6.283 |
0.5236 |
| 2½" |
4.9100 |
0.0341 |
7.854 |
0.6544 |
| 3" |
7.0700 |
0.0491 |
9.420 |
0.7854 |
| 3½" |
9.6200 |
0.0668 |
11.00 |
0.9164 |
| 4" |
12.570 |
0.0873 |
12.57 |
1.0470 |
| 4½" |
15.900 |
0.1105 |
14.14 |
1.1780 |
| 5" |
19.630 |
0.1364 |
15.71 |
1.3090 |
| 5½" |
23.760 |
0.1650 |
17.28 |
1.4390 |
| 6" |
28.270 |
0.1964 |
18.85 |
1.5710 |
| 6½" |
33.180 |
0.2305 |
20.42 |
1.7020 |
| 7" |
38.480 |
0.2673 |
21.99 |
1.8330 |
| 7½" |
44.180 |
0.3068 |
23.56 |
1.9640 |
| 8" |
50.270 |
0.3491 |
25.13 |
2.0940 |
| 8½" |
56.750 |
0.3940 |
26.70 |
2.2250 |
| 9" |
63.620 |
0.4418 |
28.27 |
2.3560 |
| 9½" |
70.880 |
0.4923 |
29.85 |
2.4870 |
| 10" |
78.540 |
0.5454 |
31.42 |
2.6180 |
| 11" |
95.030 |
0.6600 |
34.56 |
2.8800 |
| 12" |
113.10 |
0.7854 |
37.70 |
3.1420 |
| 13" |
132.70 |
0.9218 |
40.84 |
3.4030 |
| 14" |
153.90 |
1.0690 |
43.98 |
3.6650 |
| 15" |
176.70 |
1.2270 |
47.12 |
3.9270 |
| 16" |
201.00 |
1.3960 |
50.26 |
4.1890 |
| 17" |
226.90 |
1.5760 |
53.41 |
4.4510 |
| 18" |
254.40 |
1.7670 |
56.55 |
4.7120 |
| 19" |
283.50 |
1.9690 |
59.69 |
4.9740 |
| 20" |
314.10 |
2.1820 |
62.83 |
5.2360 |
| 21" |
346.30 |
2.4050 |
65.97 |
5.4980 |
|
