This .pdf document is bookmarked Operating Instructions and Parts Manual 12”x20” Semi-Automatic Variable-Speed Mitering Band Saw Models HBS-1220MSA, HBS-1220MSAH JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com Part No.
14. Remove loose items and unnecessary workpieces from area before starting machine. 15. Bring adjustable saw guides and guards as close as possible to the workpiece. 1.0 IMPORTANT SAFETY INSTRUCTIONS 16. Always wear protective eye wear when operating, servicing, or adjusting machinery. Eyewear shall be impact resistant, protective safety glasses with side shields complying with ANSI Z87.1 specifications. Use of eye wear which does not comply with ANSI Z87.
job for which it was not designed. The right tool will do the job better and more safely. 26. Disconnect electrical power before servicing. Whenever changing accessories or general maintenance is done on the machine, electrical power to the machine must be disconnected before work is done. 38. Use only recommended accessories; improper accessories may be hazardous. 39. Keep saw blades sharp and clean for the best and safest performance. 27. Remove adjusting keys and wrenches.
2.0 Table of contents Section Page 1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2 2.0 Table of contents ............................................................................................................................................ 4 3.0 Machine introduction ...................................................................................................................................... 5 4.
3.0 Machine introduction The JET HBS-1220MSA series Mitering Band Saws incorporate a number of design features and innovations to make these saws a powerful and productive addition to machine shops, maintenance shops, tool rooms, and fabrication and welding shops. The swivel control panel allows the operator access to all machine controls from either side of machine. The 6point contact blade guide assemblies ensure greater accuracy and longer blade life.
5.0 Specifications Table 2 Stock number Model number Motor and Electricals Main motor type Horsepower Phase Voltage Cycle Listed FLA (full load amps) Motor speed On/off switch Power transfer Power cable and plug Recommended circuit size 2 Sound emission 3 Hydraulic motor Vise operation Coolant pump Capacities 90 deg. Round 45 deg. 90 deg. Square (WxH) 45 deg. Rectangle (WxH) 424476 HBS-1220MSA TEFC induction 3 HP (2.25 kW) 3 PH 230/460 V (prewired 230 V) 1 60 Hz 8.5/4.
and front-to-back. Adjust leveling screws until machine is level in both directions and tighten nuts. Read and understand the entire contents of this manual before attempting assembly or operation. Failure to comply may cause serious injury. 7. 6.0 Setup and assembly 6.1 Shipping contents 1 1 1 1 1 1 1 Clean all rust preventative from surfaces with kerosene or cleaner/degreaser. Do not use gasoline, paint thinner, mineral spirits, etc., as these may damage painted surfaces.
7.0 Electrical connections Electrical connections must be made by a qualified electrician in compliance with all relevant codes. This machine must be properly grounded while in use to protect the operator from electrical shock and possible fatal injury. 7. Replace two 230V fuses with two 460V/1A fuses (p/n HBS1220MSA-FU1A). 8. Close all covers before starting the saw. The HBS-1220MSA and HBS-1220MSAH band saw is rated at 230/460V, 3 phase. It is prewired for 230 volt.
6. Remove blade from both wheels and out of each blade guide. 7. Make sure teeth of new blade are pointing in proper direction of travel. Work blade all the way up into blade guide bearings (E) and guide blocks (F) with back of blade against back-up bearing (G), as shown in Figure 8-2. 2. Loosen four knobs and open wheel cover (A, Figure 8-1). Remove upper gap cover (B, Figure 8-1), lower blade guard (C, Figure 8-1), and guide brackets (J, Figure 8-1). 3.
8.5 Blade guide bearing adjustment Proper adjustment of blade guide bearings is critical to efficient operation of the saw. The blade guide bearings have been adjusted by the manufacturer. They should rarely require adjustment except after a blade change. Failure to maintain proper blade adjustment may cause serious blade damage or inaccurate cuts. It is always better to try a new blade when cutting performance is poor. If performance remains poor after changing the blade, make the necessary adjustments.
8.8 Broken blade safety device If blade breaks during operation, the limit switch shown in Figure 8-7 will automatically stop the machine. Figure 8-7 8.9 Vise adjustments 8.9.1 General movements Figure 8-5 8.7 Changing blade speed 1. Raise blade approximately six inches above workpiece and turn feed rate knob to zero. 2. Turn power on, and turn speed adjuster knob (Figure 8-6) to match appropriate material. Turn counterclockwise to increase speed, clockwise to decrease. 1.
8.11 Limit switch adjustment Loosen locking bolt (M1, Figure 7-8) and adjust floating jaw against workpiece so that it conforms to workpiece shape. If needed, slightly loosen hex bolt (M2) to allow easier movement. Tighten locking bolt (M1) before operating. Limit switches have been correctly adjusted by the manufacturer. If further adjustment is required, proceed as follows. 8.11.1 Upper Limit Switch The upper limit switch stops bow at highest position.
Figure 9-1 10.0 Operation Figure 8-13 Refer to Figure 9-1. 9.0 Operating controls 10.1 Manual mode Refer to Figure 9-1. 1. Raise bow and set feed rate knob to zero. Power Indicator Light (A) – Illuminates whenever machine is receiving electrical power. 2. Make sure workpiece is secure within vise and set for desired width of cut. Blade Start (B) – Press to start blade movement. 3. Make sure left blade guide bracket is adjusted as close as possible to left vise jaw.
NOTE: In auto mode, Bow Up/Down and Vise Open/Close buttons (E/F/G/H) are rendered inactive while blade is engaging workpiece. 4. Keep the same hydraulic cylinder setting and begin a second cut on the same or similar workpiece. If E-stop (D) is pressed in auto mode, all functions will cease. While E-stop is engaged, you may press and hold Blade Up button (E) to return bow to raised position. Release the button and bow will stop functioning.
equivalent, until level reaches dot in middle of sight glass. 5. Reinstall fill plug. 6. Lower bow. Recheck sight glass, top off if needed. 11.1.2 Servicing hydraulic oil 1. Disconnect machine from power source. 2. Remove hydraulic reservoir access panel. 3. Check oil level (A, Figure 11-3). If level is below yellow (upper) line, the reservoir should be filled. 11.1 Lubrication 4. Disconnect electrical power. See sect. 11.3, Table 3, for lubrication chart. 5. Remove reservoir fill cap (B).
11.2 Additional servicing Any additional servicing should be performed by authorized service personnel. 11.
12.0 Blade speed recommendations Speed FPM Material 90 Tool steel, stainless steel, alloy steel, copper alloys, hard cast iron 130 Mild steel, soft cast iron, medium hard brass, medium hard bronze 170 Soft brasses and bronzes, hard aluminum 235 Plastic, soft and medium aluminum, other light materials 370 Plastic, wood, other light materials Table 4 13.0 Troubleshooting HBS-1220MSA/MSAH Table 5 * WARNING: Some corrections may require a qualified electrician.
Symptom Possible Cause Correction* Cuts not square. (cont.) Blade tracking too far from wheel shoulders. Adjust blade tracking. Finished surface of workpiece is rough, unsatisfactory. Blade is dull. Replace blade. Improper blade for cutting operation. Check a machinist’s handbook for blade recommendations. Feed rate too fast. Reduce feed rate. Blade tension too low. Increase blade tension. Incorrect blade tension. Adjust blade tension. Incorrect blade speed or feed rate.
14.1.
14.1.
14.1.3 HBS-1220MSA/MSAH Base Assembly – Parts List Index No Part No Description Size Qty 1 ................ HBS1220MSA-01 ...... Machine Base .......................................................... ...................................... 1 1-1 ............. 5512197 .................... Drain Plug ................................................................ 3/8"PT ........................... 1 2 ................ TS-1492071 .............. Hex Cap Screw ...............................................
Index No Part No Description Size Qty 44 .............. J-5507628G .............. Support .................................................................... ...................................... 1 44-1 ........... TS-1503071 .............. Socket Head Cap Screw ......................................... M6-1.0 x 30 ................... 1 44-2 ........... TS-2361061 .............. Lock Washer ............................................................ M6 ................................. 1 44-3 .......
Index No Part No Description Size Qty 101 ............ 5512144 .................... Switch Mounting Plate ............................................. ...................................... 1 102 ............ 5512151 .................... Cylinder Cover ......................................................... ...................................... 1 103 ............ 5512159 .................... Switch Stop Plate .................................................... ......................................
14.2.
14.2.2 HBS-1220MSA/MSAH Bow Assembly – Parts List Index No Part No Description Size Qty 146 ............ BB-51103 .................. Thrust Bearing ......................................................... 51103 ............................ 1 147 ............ HBS1220MSA-147 .... Hydraulic Tension Gauge ........................................ ...................................... 1 148 ............ 5512250 .................... Special Washer ....................................................... .....
Index No Part No Description Size Qty 208 ............ TS-1550061 .............. Flat Washer ............................................................. M8 ............................... 11 209 ............ TS-2361081 .............. Lock Washer ............................................................ M8 ................................. 6 210 ............ 5512304 .................... Wire Brush Seat ...................................................... ......................................
Index No Part No Description Size Qty 278 ............ TS-1540061 .............. Hex Nut .................................................................... M8-1.25 ......................... 4 279 ............ HBS1220MSA-279 .... Bracket .................................................................... ...................................... 1 280 ............ TS-0680041 .............. Flat Washer ............................................................. 3/8"................................
14.3.
14.3.2 HBS-1220MSA/MSAH Control Box Assembly – Parts List Index No Part No Description Size Qty 115 ............ HBS1220MSA-115 .... Swivel Bushing ........................................................ ...................................... 1 115-1 ......... F006089 .................... C-Retaining Ring, Ext .............................................. S-48 .............................. 1 116 ............ TS-0207031 .............. Socket Head Cap Screw .........................................
14.4.1 HBS-1220MSA/MSAH Electrical Box Assembly – Exploded View 14.4.2 HBS-1220MSA/MSAH Electrical Box Assembly – Parts List Index No Part No Description Size Qty 65 .............. HBS1220MSA-65 ............... Keyed Door Latch ........................................... ...................................... 1 70 .............. HBS1220MSA-70 ............... Electric Box Door Cover .................................. ...................................... 1 71 .............. HBS1220MSA-OMM230 ....
15.0 Electrical Connections 15.1.
15.1.2 HBS-1220MSA wiring diagram (cont.) 15.1.
15.2.
15.2.2 HBS-1220MSAH wiring diagram (cont.
15.2.3 HBS-1220MSAH electrical panel diagram 15.3.
16.0 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.
