This .pdf document is bookmarked Operating Instructions and Parts Manual Woodworking Band Saws Model JWBS-15, JWBS-18, JWBS-20 JWBS-20 shown JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com Part No.
11. Disconnect tools before servicing; when changing accessories, such as blade, bits, cutters and the like. 1.0 IMPORTANT SAFETY INSTRUCTIONS WARNING – To reduce risk of injury: 1. Read and understand entire owner's 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 warning labels obscured or removed. 4.
4. 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 more safely. 27. Keep safety guards in place at all times when machine is in use. If removed for maintenance purposes, use extreme caution and replace the guards immediately after completion of maintenance. 35. Use recommended accessories; accessories may be hazardous. 28. Check damaged parts.
2.0 Table of contents Section Page 1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2 2.0 Table of contents............................................................................................................................................ 4 3.0 About this manual .......................................................................................................................................... 6 4.
9.11 Material................................................................................................................................................... 24 9.12 Blade breakage ...................................................................................................................................... 24 10.0 User-maintenance ...................................................................................................................................... 25 10.1 Lubrication points ......
3.0 About this manual This manual is provided by JET, covering the safe operation and maintenance procedures for a JET Model JWBS-15, JWBS-18 and JWBS-20 Band Saw. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. Your machine has been designed and constructed to provide consistent, longterm operation if used in accordance with the instructions as set forth in this document.
4.1 Specifications for JWBS-15 Model number .............................................................................. JWBS-15 .......................................... JWBS-15-3 Stock number .................................................................................. 714600 ................................................. 714650 Band saw nominal size ....................................................................... 15 in. .................................................... 15 in.
4.2 Specifications for JWBS-18 Model number .............................................................................. JWBS-18 .......................................... JWBS-18-3 Stock number .................................................................................. 714700 ................................................. 714750 Band saw nominal size ....................................................................... 18 in. .................................................... 18 in.
4.3 Specifications for JWBS-20 Model number ........................................................................... JWBS-20-3 .......................................... JWBS-20-5 Stock number .................................................................................. 714800 ................................................. 714850 Band saw nominal size ....................................................................... 20 in. .................................................... 20 in.
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5.2 Tools required for assembly Read and understand the entire contents of this manual before attempting assembly or operation. Failure to comply may cause serious injury. The tools listed below are not included but are required for assembly. 1 1 1 1 1 5.0 Setup and assembly 5.1 Shipping contents 5.3 Unpacking and cleanup Refer to Figure 5-1.
Line up table to trunnions, and insert four hex cap screws with lock washers and flat washers (Figure 5-4). Hand tighten screws only. 5.7 Installing guide rail 3. Check that table is parallel to blade: Move blade tension lever to Full Tension position (shown in Figure 7-9), and place a long straightedge flush against blade, making sure it contacts both front and back of blade. See Figure 5-5. (Do not deflect blade by pushing into it.) 1. 4.
5.9 Table bracket (JWBS-20 only) an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances. Install bracket (J, Figure 5-8) to back edge of table. Level with top surface of table and tighten screws. Do not modify the plug provided - if it will not fit the outlet, have the proper outlet installed by a qualified electrician.
6.4 Circuit Information (all models) The Band Saw should be connected to a dedicated circuit with a circuit breaker or time delay fuse rated “D” with the appropriate amperage rating. See Table 1 for recommended circuit sizes. Local codes take precedence over recommendations.
7.0 Adjustments 7.1 Aluminum resaw fence Refer to Figures 7-1 and 7-2. Loosen knobs (A1) until lock bar protrudes enough on which to slide the aluminum fence plate from one end, as shown in Figure 7-1. Retighten knobs. Figure 7-3 7.3 Table tilt Refer to Figure 7-4. 1. Disconnect machine from power source. 2. Loosen lock handle (D). Figure 7-1: vertical position 3.
5. If necessary, adjust pointer (G, Figure 15) to zero. (If the teeth will not point down, no matter how you orient blade, then blade is inside-out. Twist it into correct position and re-install it.) Figure 7-5 Figure 7-6 7.5 Leveling table insert Remove table insert to expose set screws in the table ledge. Rotate screws as needed (2mm hex key) until insert sits flush with table surface. 7.6 Installing/changing blades Wear gloves when handling blades.
7.7 Blade tension 7.8 Adjusting blade tension lever Blade tension is set with the blade tension handwheel (L, Figure 7-10) and is performed following blade replacement and periodically as the blade stretches from use. The blade tension lever has an adjustment screw or stop bushing that allows you to adjust how much tension is released when lever is used. To adjust tension lever: Disconnect machine from power source before making any adjustments. 1. Disconnect machine from power source. 2.
3. 4. time to observe blade in action through tracking window. Make sure blade guides and other parts of machine will not interfere with blade movement. Use handwheel (N) to lower guide post until you can see blade through tracking window (O, Figure 7-13). 11. If further adjustments are needed, disconnect from power and repeat above procedure. 7.10 Overview – bearing adjustments Set blade tension lever initially to Partial Tension-Idle/Tracking position.
1. Loosen lock knob (D) and slide thrust bearing up to back of blade. 2. Adjust thrust bearing until space between groove bottom and back edge of blade is approximately 0.015” (1/64”). Tighten lock knob (D). 3. If lateral adjustment of bearing is needed to align groove with blade, loosen set screw (E) at front of bearing assembly, and shift bearing as needed. Retighten set screw. 4. Make sure all lock knobs on upper guide bearing assembly are tightened when adjustments are finished. Figure 7-16 5.
7.11). Also, the table must be square with blade (see sect. 7.4). 4. Loosen lock knob (L, Figure 7-20) and raise guide post to a high position. 5. Confirm that guide post travels straight up and down, and guide bearings maintain their relationship to blade. 6. If guide post does not go straight up and down (blade begins deflecting when guide post is raised), slightly loosen the screws (O) and turn any of the set screws (P) as needed to bring guide post into line. 7.
6. Tighten lock handle (A) to secure motor position. with moderate pressure on the belt halfway between the pulleys. An adequately tensioned belt will deflect about 1/2”. If tension isn’t strong enough, push down on motor. 11. Tighten motor lock handle (A). 12. Install blade, and verify blade tension and tracking before operating (sect 7.7 and 7.9). 7.18 Pulley alignment Pulley alignment is done in conjunction with poly Vbelt replacement. If you are just beginning the alignment, start with sect. 7.17.
On 3- and 5-horsepower models, the on button will light up when it is pushed and saw is operating. (There is no light on 1-3/4 HP models.) The switch has a safety feature that prevents unauthorized or accidental starting of the machine. With band saw turned off, slide safety key (C, Figure 8-1) up and remove it from switch. This piece must be re-inserted before band saw can operate. 9.
Figure 9-5 Figure 9-3 9.6 Saw blade selection 9.4 Resawing Using the proper blade for the job will increase the operating efficiency of your band saw, help reduce necessary saw maintenance, and improve your productivity. Thus, it is important to follow certain guidelines when selecting a saw blade. Resawing is the process of slicing stock to reduce its thickness, or to produce boards that are thinner than the original workpiece. Figure 9-4 demonstrates resawing.
General rule: Use a blade that will have no fewer than 6 and no more than 12 teeth in the workpiece at any given time. Figure 9-8 Figure 9-6 9.9 Shape 9.11 Material Figure 9-7 shows common types of tooth shape. Tooth shape has an effect on cutting rate, and with few exceptions, the Skip and Hook types are used to obtain higher feed rates when cutting thick workpieces. Variable-tooth blades are also available, which combine features of the other styles.
Apply a light coat of paste wax to the table surface. Aerosol protectants are also available in major hardware stores and supply catalogs. Whatever method is chosen, the coating should protect the metal and provide a smooth surface, without staining workpieces. 10.0 User-maintenance Before any intervention on the machine, disconnect it from the electrical supply by pulling out the plug. Failure to comply may cause serious injury.
11.0 Blade Selection Guide Table 3 Identify the material and thickness of your workpiece. The chart will show the recommended PITCH, blade TYPE, and FEED RATE.
12.0 Troubleshooting JWBS-series Band Saws 12.1 Operational problems Table 4 Symptom Table tilt does not hold position under load. Table will not tilt. Table vibration while sawing. Probable Cause Lock handle not tight. Trunnion locking mechanism is broken or worn. Trunnion not lubricated. Trunnion jammed. Drive belt too slack. Incorrect choice of saw blade pitch. Surface finish on workpiece is rough. Blade cutting inaccurately. Cuts not straight. Blade cannot be tensioned properly.
Symptom Blade breaks prematurely. Probable Cause Feed force too great. Blade pitch too coarse. Guide bearings not properly supporting blade. Blade tensioned too tightly. Blade breaks close to weld. Reduce tension. Blade overheated during welding. Blade cooled too rapidly after welding. Premature dulling of saw teeth. Correction * Reduce feed force. Refer to blade selection chart; use finer pitch blade. Check guide bearings for correct position and signs of wear. Adjust or replace as needed.
12.2 Mechanical and electrical problems Table 5 Symptom Machine will not start/restart or repeatedly trips circuit breaker or blows fuses. Probable Cause No incoming power. Cord damaged. Band Saw frequently trips. Building circuit breaker trips or fuse blows. Overload automatic reset has not reset. Switch or motor failure (how to distinguish). Motor overheated. Motor failure. Miswiring of unit. Switch failure. Band Saw does not attain full speed. Extension cord too light or too long. Low current.
13.0 Replacement Parts Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial Number of your machine available when you call will allow us to serve you quickly and accurately.
13.1.
13.1.2 JWBS-15 Assembly – Parts List Index No. Part No. Description Size Qty 1 ................ PM1500-004.............. Lifting Ring ............................................................... M10 ............................... 1 2 ................ JWBS15-102 ............. Machine Main Body Frame ...................................... ...................................... 1 3 ................ TS-1482021 .............. Hex Cap Bolt............................................................
Index No. Part No. Description Size Qty 55 .............. JWBS15-155 ............. Fixed Plate ............................................................... ...................................... 1 56 .............. TS-2361061 .............. Spring Washer ......................................................... M6 ................................. 2 57 .............. TS-2246122 .............. Socket Head Button Screw ...................................... M6x12 ........................... 2 58 ......
Index No. Part No. Description Size Qty .................. JWBS18B-1101ACS . Centrifugal Switch (not shown) ............................... ...................................... 1 102 ............ PM1500-015.............. Motor Bracket Lock Handle ..................................... M10x33 ......................... 1 103 ............ TS-1550071 .............. Flat Washer ............................................................. M10 ............................... 1 104 ............ JWBS15-1104 ..
13.2.1 JWBS-15 Rip Fence Assembly – Exploded View 13.2.2 JWBS-15 Rip Fence Assembly – Parts List Index No. Part No. Description Size Qty .................. JWBS15-1123 ........... Rip Fence Assembly (#1 thru 18) ............................ ........................................ 1 ................ JWBS15-1123-201 .... Fence Body.............................................................. ...................................... 1 2 ................ JWBS15-1123-202 .... Lock Bar.......................
13.3.
13.3.2 JWBS-15/18/20 Trunnion Support Bracket Assembly – Parts List Index No Part No Description Size Qty .................. JWBS15-1138 ........... Trunnion Support Bracket Assembly (#1 thru 32).... ........................................ 1 ................ TS-1550061 .............. Flat Washer ............................................................. M8 x Ø18 ...................... 4 2 ................ TS-2361081 .............. Lock Washer .........................................................
13.4.1 JWBS-15 Guide Bar Bracket Assembly – Exploded View 13.4.2 JWBS-15 Guide Bar Bracket Assembly – Parts List Index No Part No Description Size Qty .................. JWBS15-1120 ........... Guide Bar Bracket Assembly (#1 thru 25) ............... ........................................ 1 ................ JWBS15-1120-401 .... Guide Bar................................................................. ...................................... 1 2 ................ TS-1503021 ..............
13.5.1 JWBS-15 Upper Wheel Assembly – Exploded View 5 2 3 4 1 13.5.2 JWBS-15 Upper Wheel Assembly – Parts List Index No Part No Description Size Qty .................. PM1500-019.............. Upper Wheel Assembly (#1 thru 5).......................... ........................................ 1 ................ PM1500-019-01 ........ Upper Wheel............................................................ Dia.15 inches. ............... 1 2 ................ PM1500-019-02 ........ Spacer ..............
13.7.1 JWBS-15 Lower Blade Guide Assembly – Exploded View 13.7.2 JWBS-15 Lower Blade Guide Assembly – Parts List Index No Part No Description Size Qty .................. JWBS15-1137 ........... Lower Blade Guide Assembly (#1 thru 10) .............. ........................................ 1 ................ PM1500-096-01 ........ Lower Blade Guide Support..................................... ...................................... 1 2 ................ PM1500-096-02 ........ Eccentric Shaft..............
13.8.1 JWBS-15 Upper Blade Guide Assembly – Exploded View 13.8.2 JWBS-15 Upper Blade Guide Assembly – Parts List Index No Part No Description Size Qty .................. JWBS15-1121 ........... Upper Blade Guide Assembly (#1 thru 17) .............. ........................................ 1 ................ PM1500-095-01 ........ Upper Blade Guide Support..................................... ...................................... 1 2 ................ PM1500-095-02 ........ Eccentric Shaft..............
13.9.1 JWBS-15/18/20 Miter Gauge Assembly – Exploded View 13.9.2 JWBS-15/18/20 Miter Gauge Assembly – Parts List Index No Part No Description Size Qty .................. JWBS15-1122 ........... Miter Gauge Assembly (#1 thru 9) ........................... ........................................ 1 ................ JWBS15-1122-701 .... Guide Bar................................................................. ...................................... 1 2 ................ JWBS15-1122-702 .... Guide Piece ...
13.10.
13.10.2 JWBS-18 Bandsaw Assembly – Parts List Index No. Part No. Description Size Qty 1 ................ PM1500-004.............. Lifting Ring ............................................................... M10 ............................... 1 2 ................ JWBS18B-102........... Machine Main Body Frame ...................................... ...................................... 1 3 ................ TS-1482021 .............. Hex Cap Bolt............................................................
Index No. Part No. Description Size Qty 55 .............. JWBS15-155 ............. Fixed Plate ............................................................... ...................................... 1 56 .............. TS-2361061 .............. Spring Washer ......................................................... M6 ................................. 2 57 .............. TS-2246122 .............. Socket Head Button Screw ...................................... M6x12 ........................... 2 58 ......
Index No. Part No. Description Size Qty .................. JWBS18B-1101ACS . …Centrifugal Switch (not shown) ........................... ...................................... 1 102 ............ PM1500-015.............. Motor Bracket Lock Handle ..................................... M10x33 ......................... 1 103 ............ TS-1550071 .............. Flat Washer ............................................................. M10 ............................... 1 104 ............ JWBS15-1104 .....
13.11.1 JWBS-18/20 Rip Fence Assembly – Exploded View 13.11.2 JWBS-18/20 Rip Fence Assembly – Parts List Index No. Part No. Description Size Qty .................. JWBS18B-1128......... Rip Fence Assembly (#1 thru 18) ............................ ........................................ 1 ................ JWBS15-1123-201 .... Fence Body.............................................................. ...................................... 1 2 ................ JWBS15-1123-202 .... Lock Block ..............
13.12.1 JWBS-18/20 Guide Bar Bracket Assembly – Exploded View 13.12.2 JWBS-18/20 Guide Bar Bracket Assembly – Parts List Index No Part No Description Size Qty .................. JWBS18B-1125......... Guide Bar Bracket Assembly (#1 thru 28) ............... ........................................ 1 ................ JWBS18B-1125-401 . Guide Bar................................................................. ...................................... 1 2 ................ TS-1503021 ..............
13.13.1 JWBS-18 Upper Wheel Assembly – Exploded View 6 2 3 4 5 1 13.13.2 JWBS-18 Upper Wheel Assembly – Parts List Index No Part No Description Size Qty .................. PM1800B-018 ........... Upper Wheel Assembly (#1 thru 6).......................... ........................................ 1 ................ PM1800B-018-01 ...... Upper Wheel............................................................ ...................................... 1 2 ................ PM1800B-018-02 ...... Spacer ....
13.15.1 JWBS-18/20 Lower Blade Guide Assembly – Exploded View 13.15.2 JWBS-18/20 Lower Blade Guide Assembly – Parts List Index No Part No Description Size Qty .................. JWBS18B-1142......... Lower Blade Guide Assembly (#1 thru 12) .............. ........................................ 1 ................ PM1500-096-01 ........ Lower Blade Guide Support..................................... ...................................... 1 2 ................ PM1500-096-02 ........ Eccentric Shaft........
13.16.1 JWBS-18/20 Upper Blade Guide Assembly – Exploded View 13.16.2 JWBS-18/20 Upper Blade Guide Assembly – Parts List Index No Part No Description Size Qty .................. JWBS18B-1126......... Upper Blade Guide Assembly (#1 thru 18) .............. ........................................ 1 ................ PM1500-095-01 ........ Upper Blade Guide Support..................................... ...................................... 1 2 ................ PM1500-095-02 ........ Eccentric Shaft........
13.17.
13.17.2 JWBS-20 Bandsaw Assembly – Parts List Index No. Part No. Description Size Qty 1 ................ PM1500-004.............. Lifting Ring ............................................................... M10 ............................... 1 2 ................ JWBS20B-102........... Machine Main Body Frame ...................................... ...................................... 1 3 ................ TS-1550041 .............. Flat Washer ............................................................
Index No. Part No. Description Size Qty 54 .............. PM1500-069.............. Cam ......................................................................... ...................................... 1 55 .............. JWBS15-168 ............. Lock Knob ................................................................ M10x53 ......................... 1 56 .............. PM1500-068.............. Lock Handle ............................................................. M10 ...............................
Index No. Part No. Description Size Qty 98 .............. PM1800B-093 ........... Viewing Window ...................................................... ...................................... 1 99 .............. TS-1521011 .............. Set Screw ................................................................ M4x4 ............................. 2 100 ............ TS-2246122 .............. Socket Head Button Screw ...................................... M6x12 ........................... 1 101 ............
13.18.1 JWBS-20 Upper Wheel Assembly – Exploded View 3 2 4 5 1 13.18.2 JWBS-20 Upper Wheel Assembly – Parts List Index No Part No Description Size Qty .................. PM2013B-018 ........... Upper Wheel Assembly (#1 thru 5).......................... ...................................... 1 1 ................ PM2013B-018-01 ...... Upper Wheel (Rubber Coating) ............................... ...................................... 1 2 ................ PM1800B-018-02 ...... Spacer .................
13.20.
13.20.2 JWBS-20 Upper Wheel Sliding Bracket Assembly – Parts List Index No Part No Description Size Qty 1 ................ JWBS20B-112-801 ... Spring ...................................................................... ...................................... 1 2 ................ JWBS20B-112-802 ... Bushing .................................................................... ...................................... 1 3 ................ JWBS20B-112-803 ... Plate.............................................
14.0 Electrical Connections 14.1 Connections for 1.
14.
14.
15.0 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.
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427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
