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C.F.M. REQUIREMENTS FOR TOOLS
Machine Minimum C.F.M. Required Minimum Duct Diameter
Band Saw (12 to 16-inch) 350 C.F.M. 4-inch
Belt/Disc Sander 450 C.EM. 5-inch
Drill Press 350 - 400 C.EM. 4-inch
Drum Sander (12 to 24-inch) 550 - 700 C.EM. 5-inch
Floor Sweep 350 - 400 C.EM. 4 to 5-inch
Jointer (up to 8-inch) 350 - 400 C.EM. 4 to 5-inch
Jointer (over 8-inch) 450 - 550 C.EM. 5-inch
Radial Arm Saw 450 - 600 C.EM. 5-inch
Miter Saw 450 - 600 C.EM. 5-inch
Router Table 200 C.EM. 3-inch
Scroll Saw 200 C.EM. 3-inch
Spindle Sander 400 C.EM. 4-inch
Table Saw (10-inch) 350 C.EM. 4-inch
Thickness Planer (10 to 15-inch) 400 C.EM. 4-inch
Thickness Planer (16 to 20-inch) 600 - 800 C.EM. 5 to 6-inch
STATIC PRESSURE REQUIREMENTS FOR A DUST COLLECTION SYSTEM
Using STEPS 1 thru 4 and the "Static Pressure Requirement Chart" you can determine the static pressure required
for your Dust Collector.
Step #1 : Multiply the number of feet of Hose/Pipe times the appropriate inches rating.
Examp/e.'40 feet of 4-inch diameter ribbed tubing x .11 = 4.4 Total
Step #2: Multiply the fittings times the ratings and add them together.
Examp/e.'Two 90-degree Elbows (using 4-inch diameter Hose) = .84 PLUS two 90-degree T-fittings = .98
Total = 1.82
Step #3:
Step #4:
Add 2.5 for the Machine Hook-up and "Dirty Bag" factors (1.5 for Hook-ups + 1.0 for Dirty Bag).
Total the above three calculations. This total should not exceed the maximum static
pressure for your Dust Collector.
Examp/e.'4.4 (Total Step #1) x 1.82 (Total Step #2) + 2.5 (Total Step #3) = 8.72
For this example a Dust Collector with a Static Pressure rating of over 8.72 or higher is required.
See Product Specifications on page 2 for your dust collector maximum static pressure.
NOTE: To determine if you have met the Static Pressure Requirement when using a Dust Collection System, identify
the branch of the system with the highest static pressure requirement first. If you run your Dust Collection System with
more than one blast gate open, add the static pressure from all branches that are open to determine the total static
pressure requirements.
Static Pressure Requirement Chart
Size ofHose Hose/Pipe RibbedTubing 90-degree 90-degree 45-degree Machine "Dirty Bag"
Rigid Pipe (per foot) Elbow Elbow T-fitting Hook-Up Adjustment
(perfoot)
3 .10 .15 .50 .60 .25 1.50 1.0
4 .07 .11 .42 .49 .21 1.50 1.0
5 .055 .08 .49 .55 .25 1.50 1.0
16
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