Jet 22-44 OSC Service manual

Operating Instructions and Parts Manual
Oscillating Drum Sander
Model 22-44OSC
JET
427 New Sanford Road Part No. M-659006K
LaVergne, Tennessee 37086 Revision D 03/2016
Ph.: 800-274-6848 ECR 16020409184
www.jettools.com Copyright © 2015 JET

2
Warranty and Service
JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please
contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday.
Warranty Period
The general warranty lasts for the time period specified in the literature included with your product or on the official
JET branded website.
•JET products carry a limited warranty which varies in duration based upon the product. (See chart below)
•Accessories carry a limited warranty of one year from the date of receipt.
•Consumable items are defined as expendable parts or accessories expected to become inoperable within a
reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.
Who is Covered
This warranty covers only the initial purchaser of the product from the date of delivery.
What is Covered
This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty
does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear,
improper repair, alterations or lack of maintenance. JET woodworking machinery is designed to be used with Wood.
Use of these machines in the processing of metal, plastics, or other materials outside recommended guidelines may
void the warranty. The exceptions are acrylics and other natural items that are made specifically for wood turning.
Warranty Limitations
Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a
Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.
How to Get Technical Support
Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof
of initial purchase when calling. If a product requires further inspection, the Technical Service representative will
explain and assist with any additional action needed. JET has Authorized Service Centers located throughout the
United States. For the name of an Authorized Service Center in your area call 1-800-274-6846 or use the Service
Center Locator on the JET website.
More Information
JET is constantly adding new products. For complete, up-to-date product information, check with your local distributor
or visit the JET website.
How State Law Applies
This warranty gives you specific legal rights, subject to applicable state law.
Limitations on This Warranty
JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT.
EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN
IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
JET SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR
INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR
PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
JET sells through distributors only. The specifications listed in JET printed materials and on official JET website are
given as general information and are not binding. JET reserves the right to effect at any time, without prior notice,
those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason
whatsoever. JET®branded products are not sold in Canada by JPW Industries, Inc.
Product Listing with Warranty Period
90 Days – Parts; Consumable items
1 Year – Motors; Machine Accessories
2 Year – Metalworking Machinery; Electric Hoists, Electric Hoist Accessories; Woodworking Machinery used
for industrial or commercial purposes
5 Year – Woodworking Machinery
Limited Lifetime – JET Parallel clamps; VOLT Series Electric Hoists; Manual Hoists; Manual Hoist
Accessories; Shop Tools; Warehouse & Dock products; Hand Tools; Air Tools
NOTE: JET is a division of JPW Industries, Inc. References in this document to JET also apply to JPW Industries,
Inc., or any of its successors in interest to the JET brand.

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Table of Contents
Warranty and Service............................................................................................................................................2
Table of Contents..................................................................................................................................................3
Warning.................................................................................................................................................................4
Introduction ...........................................................................................................................................................6
Specifications........................................................................................................................................................6
Features and Terminology ....................................................................................................................................7
Unpacking .............................................................................................................................................................8
Shipping Contents.................................................................................................................................................8
Assembly...............................................................................................................................................................9
Stand Assembly ................................................................................................................................................9
Drum Head Installation....................................................................................................................................10
Conveyor Table Installation.............................................................................................................................10
Installing Accessories..........................................................................................................................................10
Infeed and Outfeed Tables..............................................................................................................................10
Dust Cover ......................................................................................................................................................11
Dust Collection ................................................................................................................................................11
Installing Abrasives .........................................................................................................................................11
Grounding Instructions........................................................................................................................................13
Extension Cords..............................................................................................................................................13
Operating Controls..............................................................................................................................................14
On/Off Switch (Sanding Drum)........................................................................................................................14
Switch Lockout ................................................................................................................................................14
Conveyor.........................................................................................................................................................14
Drum Height Control........................................................................................................................................14
Oscillator Switch..............................................................................................................................................14
Adjustments ........................................................................................................................................................15
Depth Gauge...................................................................................................................................................15
Conveyor Belt Tension and Tracking ..............................................................................................................15
Trackers ..........................................................................................................................................................15
Conveyor Belt Replacement............................................................................................................................16
Checking Drum Alignment...............................................................................................................................16
Fine Tuning Drum Alignment...........................................................................................................................17
Tension Roller Alignment ................................................................................................................................17
Tension Roller Pressure Adjustment...............................................................................................................18
Drum Height Control Adjustment.....................................................................................................................18
Operation ............................................................................................................................................................19
Basic Operating Procedure .............................................................................................................................19
Setting Depth of Cut........................................................................................................................................19
Establishing Proper Drum Height....................................................................................................................19
Selecting SandSmart™ Feed Rates ...............................................................................................................19
Tips for Maximum Performance......................................................................................................................20
Maintenance........................................................................................................................................................21
Tracker Kit...........................................................................................................................................................22
Abrasives ............................................................................................................................................................23
Abrasive Selection Guide................................................................................................................................23
Optional Accessories ..........................................................................................................................................24
Troubleshooting ..................................................................................................................................................24
Troubleshooting – Motor and Electrical Problems...........................................................................................24
Troubleshooting – Mechanical Problems ........................................................................................................25
Troubleshooting – Operational Problems........................................................................................................26
Replacement Parts..............................................................................................................................................26
Drum Head Assembly – Exploded View..........................................................................................................27
Drum Head Assembly – Parts List ..................................................................................................................28
Conveyor and Motor Assembly – Exploded View ...........................................................................................30
Conveyor and Motor Assembly – Parts List ....................................................................................................31
Gearbox Assembly..........................................................................................................................................32
Closed Stand Assembly..................................................................................................................................33
Infeed and Outfeed Tables..............................................................................................................................34
Wiring Diagram ...................................................................................................................................................35

4
Warning
1. Read and understand this entire manual before attempting assembly or operation.
2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with
all of these warnings may cause serious injury.
3. Replace the warning labels if they become obscured or removed.
4. This sander is designed and intended for use by properly trained and experienced personnel only. If
you are not familiar with the proper and safe operation of a sander, do not use until proper training
and knowledge have been obtained.
5. Do not use this sander for other than its intended use. If used for other purposes, JET disclaims any
real or implied warranty and holds itself harmless from any injury that may result from that use.
6. Always wear approved safety glasses/face shields while using this sander. Everyday eyeglasses only
have impact resistant lenses; they are not safety glasses.
7. Before operating this sander, remove tie, rings, watches and other jewelry, and roll sleeves up past
the elbows. Remove all loose clothing and confine long hair. Non-slip footwear or anti-skid floor strips
are recommended. Do not wear gloves.
8. Wear ear protectors (plugs or muffs) during extended periods of operation.
9. Some dust created by power sanding, sawing, grinding, drilling and other construction activities
contain chemicals known to cause cancer, birth defects or other reproductive harm. Some examples
of these chemicals are:
•Lead from lead based paint.
•Crystalline silica from bricks, cement and other masonry products.
•Arsenic and chromium from chemically treated lumber.
Your risk of exposure varies, depending on how often you do this type of work. To reduce your
exposure to these chemicals, work in a well-ventilated area and work with approved safety
equipment, such as face or dust masks that are specifically designed to filter out microscopic
particles.
10. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
11. Make certain the switch is in the OFF position before connecting the machine to the power supply.
12. Make certain the machine is properly grounded.
13. Make all machine adjustments or maintenance with the machine unplugged from the power source.
14. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting
wrenches are removed from the machine before turning it on.
15. Keep safety guards in place at all times when the machine is in use. If removed for maintenance
purposes, use extreme caution and replace the guards immediately.
16. Make sure the sander is firmly secured to the stand or work table before use.
17. Check damaged parts. Before further use of the machine, a guard or other part that is damaged
should be carefully checked to determine that it will operate properly and perform its intended
function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting
and any other conditions that may affect its operation. A guard or other part that is damaged should
be properly repaired or replaced.
18. Provide for adequate space surrounding work area and non-glare, overhead lighting.
19. Keep the floor around the machine clean and free of scrap material, oil and grease.
20. Keep visitors a safe distance from the work area. Keep children away.

5
21. Make your workshop child proof with padlocks, master switches or by removing starter keys.
22. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are
careless acts that can result in serious injury.
23. Maintain a balanced stance at all times so that you do not fall or lean against moving parts. Do not
overreach or use excessive force to perform any machine operation.
24. Stand to one side of the conveyor and make sure no one else is standing in line with the conveyor
while feeding into the machine. Should a part slip while being fed, it may exit the machine at a high
rate of speed and can cause injuries to anyone standing directly in front of the infeed.
25. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for
which it was not designed. The right tool will do the job better and safer.
26. Use recommended accessories; improper accessories may be hazardous.
27. Maintain tools with care. Keep abrasives clean for the best and safest performance. Follow
instructions for lubricating the machine and changing accessories.
28. Always feed stock against the rotation of the drum.
29. Keep your hands clear when feeding parts onto the conveyor. The part will be forced down as it
begins to feed, causing a pinching action between the part and the conveyor bed. Never reach into a
running machine. Turn off sander and disconnect from power before attempting to retrieve parts from
beneath the drum.
30. Turn off the machine and disconnect from power before cleaning. Use a brush or compressed air to
remove chips or debris — do not use your hands.
31. Do not stand on the machine. Serious injury could occur if the machine tips over.
32. Never leave the machine running unattended. Turn the power off and do not leave the machine until it
comes to a complete stop.
33. Remove loose items and unnecessary work pieces from the area before starting the machine.
Familiarize yourself with the following safety notices used in this manual:
This means that if precautions are not heeded, it may result in minor injury and/or
possible machine damage.
This means that if precautions are not heeded, it may result in serious injury or possibly
even death.
- - SAVE THESE INSTRUCTIONS - -

6
Introduction
This manual is provided by JET covering the safe operation and maintenance procedures for a JET
Model 22-44OSC Oscillating Drum Sander. This manual contains instructions on installation, safety
precautions, general operating procedures, maintenance instructions and parts breakdown. This machine
has been designed and constructed to provide consistent, long-term operation if used in accordance with
instructions set forth in this manual. If there are any questions or comments, please contact either your
local supplier or JET. JET can also be reached at our web site: www.jettools.com.
Specifications
Model number ...........................................................................................................................22-44OSC
Stock numbers:
Sander kit complete................................................................................................................659006K
Sander only .............................................................................................................................. 659006
Conveyor............................................................................................................................. 649003-02
Stand......................................................................................................................................659006S
Capacities:
Maximum board width (in.).................................................................................................44 (two passes)
Minimum board length (in.)................................................................................................................2-1/4
Maximum board thickness (in.)................................................................................................................4
Minimum board thickness (in.) ............................................................................................................ 1/32
Motor and Electricals:
Conveyor motor............................................ 1/30HP, 0.45A, 40 RPM, 43 inch-lb. torque, direct drive D.C.
Drum motor.....................TEFC induction, capacitor start, 1-3/4HP (1.3kW), 1PH, 115V only, 15.5A, 60Hz
Motor speed (RPM)........................................................................................................................... 1720
Drum speed (RPM)............................................................................................................................ 1700
Conveyor variable feed rate (FPM)................................................................................ 0-10 (SandSmart)
On/off switch ............................................................................................paddle style with removable key
Recommended circuit *........................................................................................................................20A
* subject to local/national electrical codes.
Main Materials:
Frame...........................................................................................................................................cast iron
Drum...........................................................................................................................aluminum extrusion
Cabinet...............................................................................................................................................steel
Dimensions:
Conveyor height from floor (in.)..............................................................................................................32
Drum size (in.)...............................................................................................................................Ø5 x 23
Dust chute (in.)........................................................................................................................................4
Cabinet height (in.)................................................................................................................................29
Overall dimensions, assembled (in.) ............................................................................... 44L x 27W x 52H
Weights:
Net (lbs.) .............................................................................................................................................336
Shipping (lbs.) .....................................................................................................................................363
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, JET reserves the right to change specifications at any time and without prior
notice, without incurring obligations.

7
Features and Terminology
The illustration below shows the major components and features of the 22-44OSC Sander. These are
referenced throughout the manual and will help to familiarize you with the operation and functions of the
machine.
Figure 1 – Features

8
Unpacking
Open shipping container and check for shipping
damage. Report any damage immediately to
your distributor and shipping agent. Do not
discard any shipping material until the Drum
Sander is assembled and running properly.
Compare the contents of your container with the
following parts list to make sure all parts are
intact. Missing parts, if any, should be reported
to your distributor. Read the instruction manual
thoroughly for assembly, maintenance and
safety instructions.
Note: The letter designators identifying parts on
this page are used throughout the Assembly
section of this manual for reference conven-
ience.
Shipping Contents
Main Container Contents
Contents shown in Figure 1
1 Handwheel (A)
1 TufTool (B)
1 Drum Head (C)
1 Conveyor Table Assembly (D)
1 Bottom Plate (E)
2 Stand Side (F)
1 Rear Plate (G)
1 Front Plate (H)
1 Hardware Bag (see below for contents)
1 Owner's Manual (not shown)
Hardware Bag Contents
Note: The letter designators identifying parts on
this page are used throughout this manual for
reference convenience.
04 Hex Cap Screw, 3/8”x1” (J)
04 Socket Head Cap Screw, 5/16"x3/4” (K)
12 Hex Cap Screw, 5/16”x1/2” (L)
04 Flat Washer, 3/8" (M)
04 Lock Washer, 5/16” (N)
16 Flat Washer, 5/16" (P)
03 Hex Wrenches, 1/8", 4mm and 6mm (not
shown
Figure 2 – Main Container Contents
Figure 3 – Hardware Bag Contents

9
Assembly
Stand Assembly
1. Position two stand sides (F1, F2) on the
ground with the base down, about 3 feet
apart with the openings toward the center.
2. Mount the bottom plate (E) to the stand
sides with four each 5/16" hex cap screws
(L1) and 5/16" flat washers (P1). Hand-
tighten only at this time.
3. Secure the left side of the rear plate (G) to
the left stand side (F1) with two each 5/16"
hex cap screws (L2) and 5/16" flat washers
(P2). Hand-tighten only.
PPPPP
4. Secure the right side of the rear plate (G) to
the right stand side (F2) in the same manner
as above. Hand-tighten only.
5. Secure the front plate (H) to the left and right
stand sides (F1, F2) in the same manner as
above with four each 5/16" hex cap screws
(L) and 5/16" flat washers (P). Hand-tighten
only.
F 1
L 1
P 1
E
P
2
L 2
F 2
H
Base
Base
G
Figure 4

10
Drum Head Installation
Tools required for assembly:
001 Flat head screwdriver
001 Set of open-end wrenches
001 Set of Hex wrenches
001 Adjustable wrench
Referring to Figure 5:
1. Place the sander (C) onto the stand previously
assembled.
The sander is very heavy. Use a
hoist or assistance when moving to avoid injury
to self and equipment.
Align the four threaded mounting holes of the
sander base (C1) with the slotted holes on the
stand.
2. Secure the sander (C) to the stand from inside
the cabinet using four 3/8” x 1” hex cap
screws (J) and four 3/8” flat washers (M).
3. Attach the handwheel (A) to the height
adjustment screw (C2), and tighten the two set
screws with the 4mm hex wrench supplied.
After installing the drum head to the stand, finish
tightening all mounting hardware that was prev-
iously hand-tightened during the stand assembly.
Conveyor Table Installation
1. Raise the drum as far as it will go by turning the
handwheel (A) clockwise.
2. Place the conveyor (D) onto the sander
base (C1).
Align the four holes in the conveyor (D) with the
four holes in the sander base.
3. Secure the conveyor in place with four 5/16” x
3/4” socket head cap screws (K), four 5/16”
lock washers (N) and four 5/16” flat
washers (P).
4. Plug the sander's motor cord into the
receptacle of the control box (D1).
Important: The conveyor belt has been over-
tensioned for the purpose of shipping. Before
operation, adjust the belt tension (see page 15).
Installing Accessories
Infeed and Outfeed Tables
The infeed and outfeed table is an optional
accessory.
1. Bolt the base bracket (B, Fig. 6) to the sander
base with two 3/8”-16 x 1” hex head cap
screws (C) and two 3/8” flat washers (D).
Tighten the screws.
Figure 5
Figure 6
2. Mount the table (A) to the base bracket (B) with
four 1/4"-20 x 3/4" carriage bolts (E), four 1/4"
flat washers (F) and four 1/4" hex nuts (G).
Note: Leave the carriage bolts loose for now.
3. Place a straight edge on the conveyor bed and
extending out over the extension table. Raise
or lower the extension table until it is level with,
or slightly below, the surface of the conveyor
belt. Tighten the hex nuts (G).
4. Repeat for the other table.