Jet 22-44 Pro-3 User manual

JET 22-44 Pro-3 Drum Sander
Our JET 22-44 Pro-3 Drum Sander quickly became a
favorite of wood workers because of its durability, huge
capacity, ease of use and exceptional surface smoothing
capabilities. In addition to the wide range of sanding grits,
our variable feed rate and exclusive SandSmart™
technology provide unrivaled control over the sanding
process.
The JET 22-44 Pro-3 Drum Sander has the capacity to
handle surprisingly large jobs despite its 52”-tall by 41”-
long dimensions. The JET 22-44 Pro-3 Drum Sander can
sand material up to 4”-thick and 44”-wide (2 passes). The
design of the drum and conveyor also mean that it can handle material as short as 2 ¼”-
long and down to 1/32”-thick! And, we are so sure of the heavy-duty construction and
design that we cover the JET 22-44 Pro-3 Drum Sander with our
5-year warranty!
The JET 22-44 Pro-3 Drum Sander
has the power and versatility to make
your shop more efficient.
Tough Structure
The JET 22-44 Pro-3 Drum Sander is built around a rigid
backbone. Massive 3”-diameter, thick walled steel posts provide
the main vertical support for this 385 lb. machine. A specially
engineered cast iron arm supports the drum assembly, insuring
accurate, repeatable sanding. The table and motor are also rigidly
supported on heavy gauge steel brackets.
The wide stance cast aluminum legs keep the JET 22-44 Pro-3
Drum Sander exceptionally stable during use. The high quality
casters at the end of each leg feature
smooth rolling, non-marring
polyurethane tires. Each full swivel
caster has a foot operated lever that locks the swivel and wheel.
Built around massive steel
columns, the JET 22-44
Pro-3 is as tough as it is
accurate.
Even the high end, full swivel
locking casters with their
polyurethane tires are standard
equipment.
A full-width hinged shroud around the drum improves safety
while enhancing dust collection. A 4”-diameter port on the
outfeed side of the shroud lets you connect standard dust
collector hose (no adapters needed) to keep the shop clean and
extend the life of the abrasive.

Motors and Switching
The JET 22-44 Pro-3
Drum Sander uses two
independent motors, one
turning the sanding drum
and the other the conveyor
belt. The larger motor for
the drum produces 3 HP on
1 phase, 230V (only)
power. This TEFC (totally
enclosed fan cooled) motor
is rated using a continuous
duty cycle to provide the clearest indication of its true power. This continuous duty cycle
design also means the motor will stand up to extended heavy usage.
The 3 HP primary motor that drives the drum (left) and the 1/30 HP motor that
controls the conveyor (right) make the JET 22-44 Pro-3 more versatile. Using
the separate conveyor motor also allowed adding our exclusive SandSmart
circuitry.
The industrial style
magnetic switch protects
the motor from
variations in the
electrical power and you
from unexpected restarts
should the power go out
and then come back on.
The conveyor belt is driven by a 1/30 HP DC motor. Using this
special variable speed motor also allowed the development of our
patented SandSmart™technology discussed in detail later in this
article
Using these two high quality motors means you have plenty of
power for even the toughest jobs. They also provide the flexibility
and control you need for precision sanding.
The JET 22-44 Pro-3 Drum Sander is controlled with an industrial
style magnetic switch that protects the motor from potentially
harmful power fluctuations. This switch also has a safety function
because it prevents the machine from restarting on its own should
the power go out and then come back on unexpectedly. Once the
power goes out, the operator must push the On button to restart the
JET 22-44 Pro-3 Drum Sander.
Precision Drum
The JET 22-44 Pro-3 Drum Sander is built around our
heavy-duty 5”-diameter aluminum drum that has been
precision machined to insure straightness and balance. The
drum spins at 1600 RPM and is adjustable in height and
downward pressure to virtually eliminate snipe. That insures
the smoothest possible surface and maximum abrasive life.
The precision machined drum
insures sanding very flat, smooth
surfaces without vibration.
The 22" wide drum is supported on both ends by sealed,

permanently lubricated ball bearings. The drum assembly is
mounted in a truss-like carriage arm for superior strength and
rigidity. This system also makes aligning the drum to the table
surface easy. That means consistent performance with minimal
adjusting by the operator.
Our special Tuf Tool
makes changing abrasive
strips easier.
The drum is equipped with patented abrasive take-up fasteners that
make changing the abrasive strips fast and easy. We also include
our exclusive Tuf Tool™that makes operating the take-up
fasteners a no-strain event.
Table and Feed
The generous 23”-wide
by 30 ¾”-long
conveyor platform is
augmented by the
included 10”-deep by
24”-wide steel
extension tables. That
provides 51” of overall
support that handles
the big jobs with ease.
The expansive conveyor surface is expanded even further with the included steel
extension tables. (left) Easy to use conveyor belt tension adjusters (right) even have
the necessary wrench captured on the bolt!
The conveyor belt features easy to use tension and tracking adjusters. Each adjuster has a
built-in wrench captured on the threaded shaft so you never have to look for a tool to
make a small adjustment! Plus, our patented conveyor belt TRACKERS™ dramatically
reduce the need for manual belt adjustments.
Our exclusive SandSmart
circuitry protects against
overloads by automatically
slowing the feed rate to prevent
damage to the wood, abrasive
strip or motor.
The specially designed, no-give conveyor belt moves over a
precision flattened steel bed so the wood is always on a true
surface. That means super smooth, consistent sanding for the
best possible results.
The JET 22-44 Pro-3 Drum Sander uses a separate feed
motor to drive the conveyor belt. That insures consistency but
also allowed us to develop our EXCLUSIVE SandSmart™
variable-feed control system. This infinitely variable feed rate
control operates between 0 to 10 feet per minute so you can
use the best rate for the job. The SandSmart™technology
also prevents straining the machine by sensing the load on the
conveyor and automatically reducing the feed rate to help
prevent burning of the wood or the abrasive.

Table Height
A large, 7 ¾”-diameter cast-iron handwheel
adjusts the table height within its 4” range.
Each full turn of the handwheel changes
table height by 3/32" for ultra precise
sanding thickness control. The handwheel
operates a screw and gear drive that controls
both ends of the table to keep it level for
maximum sanding accuracy.
An easy to use depth stop is built onto the
support post and makes sanding many boards to a specific thickness fast, easy and very
accurate. The depth stop is tool free so you can concentrate on sanding rather than finding
a wrench!
The large handwheel (left) makes table height changes
effortless. The tool-free depth stop (right) makes
sanding several boards to a precise thickness virtually
automatic.
Digital Read Out
The included DRO
has several functions,
not the least of which
is allowing ultra
precise table to drum
settings.
The DRO (digital read out) comes pre-installed on the JET 22-44 Pro-
3 Drum Sander (#649600). This digital measuring device makes
setting ultra precise sanding depths, or returning to one with 0.01”
resolution simple and easily repeatable. The DRO can be set to
display either inch or mm readings with the push of a button. The
battery as well as a spare is supplied with the machine.
The DRO has several distinct functions. Probably the most commonly
used function is the “Absolute Measurement”. Sand a piece of wood
on the JET 22-44 Pro-3 Drum Sander, measure that thickness with
digital calipers and then set the DRO to that dimension. You can then
sand other pieces to match that thicknesses quickly with exceptional
accuracy.
The DRO also has a “Relative Measurement” that can show the amount of material to be
removed from a previously sanded board. “Hold” records a setting so you can return to it
later. “TOL” (tolerance) allows setting upper and lower tolerance limits. All of the
functions and their setting procedures are fully described in the instruction manual.
A gamut of great features including an extra powerful 3-HP motor, large capacity
conveyor with infeed and outfeed tables and the precision of a dead flat table, balanced
aluminum sanding drum backed with a DRO height adjustment system. As well the JET
22-44 Pro-3 comes equipped to be mobile with heavy duty double locking casters. The
JET 22-44 Pro-3 is a great machine for anyone tackling jobs that require large pieces to
be sanded from the hobbyist woodworker to the small job shop.