Jet 714850 - Manuals

6 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 part...

7 4.1 Specifications for JWBS-15 Model number .............................................................................. JWBS-15 .......................................... JWBS-15-3 Stock number .................................................................................. 714600 ..............

8 4.2 Specifications for JWBS-18 Model number .............................................................................. JWBS-18 .......................................... JWBS-18-3 Stock number .................................................................................. 714700 ..............

9 4.3 Specifications for JWBS-20 Model number ........................................................................... JWBS-20-3 .......................................... JWBS-20-5 Stock number .................................................................................. 714800 ...............

10 4.4 Base Hole Centers Figure 4-1: base hole centers (millimeters)

11 Read and understand the entire contents of this manual before attempting assembly or operation. Failure to comply may cause serious injury. 5.0 Setup and assembly 5.1 Shipping contents Refer to Figure 5-1. 1 Band saw (not shown) 1 Fence body – A 1 Resaw fence – B 1 Table – C 1 Table insert – D 1 ...

12 2. Line up table to trunnions, and insert four hex cap screws with lock washers and flat washers (Figure 5-4). Hand tighten screws only. 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 b...

13 5.9 Table bracket (JWBS-20 only) Install bracket (J, Figure 5-8) to back edge of table. Level with top surface of table and tighten screws. Figure 5-8 5.10 Miter gauge Refer to Figure 5-9. 1. Slide miter gauge into table slot. 2. Use a square to verify that miter gauge face is square to blade. 3....

14 Figure 6-1 230 Volt Operation To convert the JWBS-15 or JWBS-18 from 115V to 230V, single phase operation, the following is strongly recommended: Contact your local Authorized JET Service Center or qualified electrician for proper procedures to install the plug. The band saw must comply with all ...

15 7.0 Adjustments 7.1 Aluminum resaw fence Refer to Figures 7-1 and 7-2. Loosen knobs (A 1 ) 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 7-1: vertical position The aluminum fence plate can be installed in o...

16 5. If necessary, adjust pointer (G, Figure 15) to zero. Figure 7-5 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 blad...

17 7.7 Blade tension 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. Disconnect machine from power source before making any adjustments. Refer to Figures 7-9 and 7-10. 1. Place tensi...

18 3. 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). 4. Set blade tension lever initially to Partial Tension-Idle/Tracking position. Figure 7-13 5. Open ...

20 Figure 7-19 7.14 Guide post Refer to Figure 7-20. 1. Disconnect band saw from power source. 2. Loosen lock knob (L) and raise or lower guide post using handwheel (M). Figure 7-20 3. Position blade guide assembly so that bottom of guide bearings are about 1/8” above material to be cut. Or, simply ...

21 6. Tighten lock handle (A) to secure motor position. Figure 7-22 7.17 Drive belt replacement and tensioning The drive belt and pulleys are properly adjusted by the manufacturer. However, belt tension should be occasionally checked when the band saw is new, as a new belt may stretch slightly durin...

22 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) u...

23 Figure 9-3 9.4 Resawing 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. The ideal blade for resawing is the widest one the machine can handle, as the wider the blade the better i...

24 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 9-6 9.9 Shape 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 ...

25 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. Clean band saw regularly to remove any resinous deposits and sawdust. Keep miter slot, and guide bearings, clean and free of ...

26 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. Key: H – Hook L – Low S – Skip M – Medium R – Regular H – High Example: 10/H/M means 10 teeth per inch / Hook Type Blade / Medium Feed Ma...

27 12.0 Troubleshooting JWBS-series Band Saws 12.1 Operational problems Table 4 Symptom Probable Cause Correction * Table tilt does not hold position under load. Lock handle not tight. Tighten lock handle. Trunnion locking mechanism is broken or worn. Replace trunnion locking mechanism. Table will n...

29 12.2 Mechanical and electrical problems Table 5 Symptom Probable Cause Correction * Machine will not start/restart or repeatedly trips circuit breaker or blows fuses. No incoming power. Verify machine connections. Cord damaged. Replace cord. Band Saw frequently trips. One cause of overloading tri...

30 13.0 Replacement Parts Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800-274-6848 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 ser...

33 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...

37 13.3.1 JWBS-15/18/20 Trunnion Support Bracket Assembly – Exploded View

38 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 W ashe...

44 13.10.1 JWBS-18 Bandsaw Assembly – Exploded View

46 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 Ma...

54 13.17.1 JWBS-20 Bandsaw Assembly – Exploded View

56 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 Ma...

60 13.20.1 JWBS-20 Upper Wheel Sliding Bracket Assembly – Exploded View

61 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 ...

62 14.0 Electrical Connections 14.1 Connections for 1.75HP (models 714600, 714700) MOTOR at 230V 1PH GR OU N D START 300MFD 250VAC RUN 40uF 250VAC START STOP GR OU N D MOTOR at 115V 1PH Rewired to 115V PUSH BUTTON SWITCH (viewed from behind) 230V 1PH 115V 1PH G GROUND 1 4 3 2 1 4 3 2 G RED WHITE CAP...

63 14.2 Connections for 3HP (models 714650, 714750, 714800) CONTROL PANEL RUN CAPACITOR 60uF 300VAC START CAPACITOR 300MFD 250VAC POWER CORD 6-15P 1~ 230V 230V WHITE BLACK GR OU N D U V S R V U Se t a t 12 A MAGNETIC SWITCH ASSEMBLY RED YELLOW BL AC K RED BL AC K BL A C K WH IT E GREEN WHITE BLACK G...

65 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 per...