-23-
Model W1687 (For Machines Mfg. Since 9/11)
O
PE
R
ATIO
NS
Determine.Required.CFMs
Since each machine produces a different amount of
sawdust, the requirements for the minimum amount of
CFM to move that sawdust is unique to the machine (for
example, a planer produces more sawdust than a table
saw). Knowing this required CFM is important to gauging
which size of duct to use.
Refer to the provided table for a close estimation of
the airflow each machine requires. Keep in mind that
machines that generate the most sawdust should be
placed closest to the dust collector. If the machine has
multiple dust ports, the total CFM required is the sum of
all ports.
Machine.
Dust.Port.Size
Approximate.
Required.CFM
2"
98
2.5"
150
3"
220
4"
395
5"
614
6"
884
Figure.29..
Approximate required airflow
for machines, based on dust port size.
If the machine doesn't have a built in dust port, use the
following table to determine which size of dust port to
install on your machine.
Figure.30.
Dust port size and quantity per
average machine.
Machine
Average Dust Port Size
Table Saw....................................4"
Miter/Radial-Arm Saw ......................2"
Jointer (6" and smaller) ...................4"
Jointer (8"-12") ..............................5"
Thickness Planer (13" and smaller) ......4"
Thickness Planer (14"-20") ................. 6"
Shaper .......................................4"
Router (mounted to table) ................2"
Bandsaw .....................................4"
Lathe .........................................4"
Disc Sander (12" and smaller) .............2"
Disc Sander (13-18") ........................4"
Belt Sander (6" and smaller) ..............2"
Belt Sander (7"-9") .........................3"
Edge Sander (6" x 80" and smaller) ......4"
Edge Sander (6" x 80" and larger) ........5"
Drum Sander (24" and smaller) ...... 2 x 4"
Drum Sander (24" and larger) ....... 4 x 4"
Widebelt Sander (18" and smaller) .......5"
Widebelt Sander (24"-37" 1 head) ... 2 x 6"
Widebelt Sander (24"-51" 2x head) .. 5 x 4"
Write the required CFM for each machine on your sketch,
as shown in the following figure.
395
395
614
790
395
220
98
Table Saw
Planer/
Moulder
Miter
Saw
Jointer Sander
Planer
Shaper
Dust
Collector
Figure.31
. CFM requirements labeled.