This .pdf document is bookmarked Operating Instructions and Parts Manual 8-in x 13-in Horizontal Cut-Off Bandsaw Models: EHB-8VS and EHB-8VSM JET® 427 New Sanford Road LaVergne, Tennessee 37086 www.jettools.com Ph.: 855-336-4032 Part No.
1.0 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 1-855-336-4032, 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, jettools.com.
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, jettools.com. 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.
2.0 TABLE OF CONTENTS 1.0 WARRANTY AND SERVICE ...........................................................................................................................................2 2.0 TABLE OF CONTENTS ...................................................................................................................................................4 3.0 SAFETY WARNINGS .....................................................................................................................................
8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. Wear ear protectors (plugs or muffs) during extended periods of operation. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication. Make certain the switch is in the OFF position before connecting the machine to the power supply. Make certain the machine is properly grounded.
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 or even fatal injury. 4.0 INTRODUCTION This manual is provided by JET® covering the safe operation and maintenance procedures for a JET Model EHB-8.
6.0 MACHINE FEATURES Figures 1 and 2 depict the main features of the Model EHB8 Horizontal Cut-Off Bandsaw. The machine consists of a machine base onto which is installed a saw head. 6.1 MACHINE BASE The machine base consists of a coolant collection pan mounted on two panels that form the legs of the machine. A shelf is provided under the collection pan that supports a coolant tank. The machine bed mounts on the top of the collection pan. The bed supports the vise and the vise-tightening lead screw.
6.3 WORK STOP 7.0 UNPACKING AND ASSEMBLY A work stop (refer to Figure 3) is provided with the machine to allow cutting multiple pieces of identical length (refer to Figure 12). The stop consists of a rod onto which is installed a stop bracket, a tapered stop, a clamping knob and a locking handle. The rod is installed in a bore in the front of the saw bed. The stop bracket is positioned on the rod with the tapered stop toward the end of the workpiece.
.0 CONTROLS AND INDICATORS 9.1 CONTROL PANEL The operating controls for the cut-off saw are located on the control panel (Figure 4) and consist of the following controls and indicators: Coolant Pump Switch (A) – turns coolant pump on and off. Emergency Stop Switch (B) – press to stop the drive motor. Note: A micro switch also stops the motor when the workpiece is cut and the saw head is completely down. Start Switch (C) – press to start the drive motor. The saw head must be in the raised position.
.0 BLADE SELECTION The cut-off saw is delivered with a saw blade that is adequate for a variety of cut-off jobs on a variety of common materials. Refer to Figure 6 for the speeds recommended for various materials. These speeds, while appropriate for many common shop cutting needs, do not encompass the wide variety of special blade configurations (tooth pitch and set) and special alloys for cutting unusual or exotic materials.
.2 EVALUATING CUTTING EFFICIENCY Is the blade cutting efficiently? The best way to determine this is to observe the chips formed by the cutting blade. If the chip formation is powdery, then the feed is much too light, or the blade is dull. If the chips formed are curled, but colored – blue or straw colored from heat generated during the cut – then the feed rate is too high.
11.5 SETTING THE VISE FOR SQUARE CUTS The procedure for setting the vise for square cuts is identical to setting for angle cuts (above) except that a machinist’s square is used to set the angle of the fixed vise jaw (A, Fig. 10). Align one side of the square with the side of the slot (B, Fig. 10) in the table. ! Never operate the saw without blade covers in place. ! CAUTION Make sure the blade is not in contact with the workpiece when the motor is started.
F lats/S trips R oun d s K n ock off s h arp ed g e h e re w ith file C han n els Thread the stop rod (A) into the threaded opening on the front of the saw bed (B) as shown. Set the work stop as follows: 1. Loosen the stop arm (C). 2. Position the stop arm (C) on the stop rod (A) to obtain the desired length of cut on the workpiece (D). 3. Rotate the stop arm (C) so it contacts the end of the workpiece (D). 4. Secure the stop arm.
8. B A 1 C 9. 1 2 G E,F Turn the adjustment screws (F) to stop the motion of the blade on the wheel as it gets closer to the wheel shoulder. Put a 6-inch length of paper (J, Fig. 14) between the blade and the wheel as shown (the saw is still turned on). The paper should not be cut as it passes between the wheel shoulder and the blade. Turn the adjustment screws (F) slightly. Repeat the insertion of the paper between the wheel shoulder and the blade until the paper is cut in two pieces.
12.2 BLADE GUIDE ADJUSTMENT Referring to Figure 15: The EHB-8 Bandsaw has two adjustable blade guide assemblies, each consisting of the blade guide support or bracket (B, H) and blade guide (A). The position of the blade guides is important in order to make accurate cuts and prolong blade life and is determined by the size of the workpiece. Adjustment is made as follows: Left Blade Guide 1. Place the workpiece (G) in the vise (F) and clamp tightly (refer to Work Setup on page 8). 2.
If required, adjust first one guide bearing and blade guide assembly then the other as follows: 1. Using a 3mm hex wrench, loosen two set screws (A) securing the eccentric bushings. 2. Using a 5mm hex wrench, loosen two socket head cap screws (D) securing the carbide blade guides (E). 3. Position the bearings (B) by turning the bushings (C) with a flat-head screwdriver. Set the clearance between the bearings (B) and blade (F) at approximately 0.001 inch.
to 1-1/2 inches are exposed on the right side of the eyebolt mount. The saw can now be returned to service. 12.6 LIMIT SWITCH ADJUSTMENT ! Disconnect the cut-off saw from its electrical power source. Spring Referring to Figure 19: Loosen the jam nut and set the adjustment screw so that the limit switch will actuate to the off position when the saw has cut through the workpiece. Adjustment Nut Eyebolt Hydraulic Cylinder Fig. 20 Limit Switch 13.0 MAINTENANCE Switch Actuator Adjustment Screw 13.
5. Using leather gloves to prevent cuts and scratches, pull the blade off the drive wheels (H) and out of the blade guides (J). Store the removed blade carefully before proceeding. 6. Slide the new blade into the blade guides (J), then loop the blade around the drive wheels (H) such that the teeth face towards the back and the smooth side faces towards the front. This will permit the vertical side of the teeth to contact the workpiece first. 7.
13.3 REPLACING THE DRIVE MOTOR 4. ! Disconnect the cut-off saw from its electrical power source. Referring to Figure 24: 1. Remove the drive belt (see Changing the Drive Belt above). 2. Open the motor junction box and disconnect the power cord wires from their terminals. 3. Remove four screws and washers (A) that secure the motor (B) to the mounting plate (C). 4. Installation of a new motor is a reversal of the above steps.
17.0 TROUBLESHOOTING Fault Excessive blade breakage Probable Cause Suggested Remedy 1. 2. 3. 4. 5. 1. 2. 6. 7. 8. Material loose in vise. Incorrect speed or feed. Teeth too coarse for material. Incorrect blade tension. Saw blade is in contact with work piece before the saw is started. Blade rubs on the wheel flange. Misaligned guides. Cracking at weld. 3. 4. 5. 6. 7. 8. 1. 2. 3. 4. Premature blade dulling 5. 6. 7. 1. 2. 3. 4. 5. Bad cuts (crooked) 6. 7. 8. 9. 10. 11. Blade teeth too coarse.
Fault Bad cuts (rough) Blade is twisting Unusual wear on side/back of blade EHB-8VS | EHB-8VSM Probable Cause Suggested Remedy 1. 1. 2. Blade speed too high for feed pressure. Blade is too coarse. 2. Reduce blade speed and feed pressure. Replace with finer blade. 1. 2. Blade is binding in the cut. Blade tension too high 1. 2. Decrease feed pressure. Decrease tension on Blade 1. 2. Blade guides worn Blade guide bearings not adjusted. Blade guide bearing bracket is loose. 1. 2. 3.
18.0 REPLACEMENT PARTS EHB-8VS/VSM To order parts or reach our service department, call 1-855-336-4032 Monday through Friday (see our website for business hours, www.jettools.com). Having the Model Number and Serial Number of your machine available when you call will allow us to serve you quickly and accurately. JET® 427 New Sanford Road LaVergne, Tennessee 37086 www.jettools.com Ph.
EHB-8VS SAW STAND & BED - PARTS BREAKDOWN EHB-8VS | EHB-8VSM 23
EHB-8VS SAW STAND & BED PARTS LIST Index No. 1-1 1-2 24 2-1 2-2 2-3 2-4 2-5 2-6 2-8 2-9 2-10 2-11 2-12 2-13 2-14 3 4 5S 6-1 6-2 6-3 6-4 6-5 6-6 6-7 7 8S 9 12 13 14 15 16S Part No.
Index No. 17-6 17-7 24 24-1 25 26 26-1 28-1 28-2 28-3 28-4 28-5 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Part No.
Index No. 71 72 73 74 74-1 75 117 402 403 405 407 408 409 411 412 413 414 415 416 417 418 419 26 Part No.
EHB-8VSM SAW STAND & BED - PARTS BREAKDOWN EHB-8VS | EHB-8VSM 27
EHB-8VSM SAW STAND & BED PARTS LIST Index No. 1-1 1-2 6-3 6-4 6-5 6-6 7 8S 9 12 13 14 15 16S 16-1 16-2 16-3 16-4 16-5 16-6 16-7 16-8 17-1S 17-2 17-3 17-4 17-5S 17-6 17-7 24 25 26 26-1 28-1 28-2 28-3 28-4 28-5 29 30 31 32 33 34 35 39 40 28 Part No.
Index No. 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 71 72 73 74 74-1 75 71 72 73 74 74-1 75 117 152 153 154 155 156 157 158 159 160 161 161-1 Part No.
Index No. 162 164 165 166 167 168 169 169-1 170 171 172 172-1 172-2 172-3 172-4 172-5 173 174 175 176 177 178 180 181 182 401 402 403 404 405 406 407 408 409 411 412 413 414 415 416 417 418 419 420 30 Part No.
SAW HEAD (BOTH MODELS) - PARTS BREAKDOWN 354-12 341 354-11 354-9 340 339 338 354-1 354-8 354-6 354-2 337 336 354-7 354-3 334 354-4 354-10 332 V R S 351-3 335 FO 333 330-1 G F 342 351-1 343 330 328 E 365 329 331 345S 363 314-2 314-1 362 327 326 361 H 357 319 356 323 325 355 318 314-4 314-3 324 317 316 316-1 315 314 313 310 220-4 309 308 H 306 307 302-2 302-1 305 220-7 F 226 304 225 303 220-2 224 301 223 223-1 300 220-3 210 222-1 222-4 222-2 222-3 2
SAW HEAD (BOTH MODELS) PARTS LIST Index No. 200 202 204 205 206 207 208 209 209-1 210 211 212 213 214 215 215-1 215-2 216 217 218 219 220-1 220-2 220-3 220-4 220-5 220-6 220-7 221 222-1 222-2 222-3 222-4 222-5 223 223-1 224 225 226 300 301 302 302-1 302-2 303 304 32 Part No.
Index No. 305 306 306-1 307 308 309 310 311 312 313 314 314-1 314-2 314-3 314-4 314-5 314-6 315 315-1 316 316-1 317 318 319 320 321 322 323 324 325 326 327 328 329 330 330-1 331 332 333 334 335 336 337 338 339 340 341 342 343 Part No.
Index No. 345 345-1 345-2 345-3 345-4 350 351S 351-1 351-2 351-3 352 353 354-1 354-2 354-3 354-4 354-5 354-6 354-7 354-8 354-9 354-10 354-11 354-12 355 Part No.
ELECTRIC ASSEMBLY Index No. 5-1 5-2 5-2-1 5-3 5-4 5-5 5-6 5-7 5-12 5-13 5-14 5-15 5-16 5-17 5-18 5-19 5-20 5-21 5-22 5-23 5-24 5-25 5-26 5-27 5-28 5-29 Part No.
19.0 WIRING DIAGRAM EHB-8 1Ø〜 L 60HZ 110/220V PE FU2 FU3 110V-2A 220V-1A N G 0V FR:Overload FU1:24V-2A FUSE TC:Transformer SB1:Emergency Stop SB3:Start Switch SB4:Pump Switch KM1:Contactor KM2:PUMP Contactor L:Signal SQ1:Limit Switch(MET1653) FU2:220V-1A FUSE FU3:110V-2A FUSE M1:MAIN MOTOR M2:COOLANT PUMP MOTOR PE:GROUND FU1 2A 0 1 SQ1 KM2 KM1 7 L TC 24V 8 SB1 FR 2 L U1 W1 M1 1~ 1/8HP 110/220/60HZ U2 W2 KM1 SB3 FR 3 M2 1〜 SB4 1-1/2HP 110/220/60HZ 4 KM2 KM1 7 PE 2 2.
