Operating Instructions and Parts Manual 20-Inch x 20-Inch Semi Automatic Horizontal Cut-Off Band Saw Model: J-7060 WHM TOOL GROUP, Inc. 427 New Sanford Road LaVergne, Tennessee 30786 Ph.: 800-274-6848 www.wmhtoolgroup.com Part No. M-414476 Revision A2 03/09 Copyright © 2009 WMH Tool Group, Inc.
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Table of Contents Cover Page ........................................................................................................................... 1 General Specifications .......................................................................................................... 4 Operating Precautions .......................................................................................................... 5 Operating Instructions .......................................................................
General Specifications The JET J-7060 Semi-Automatic Horizontal Cut-Off Band Saw incorporates a number of exclusive design features and innovations to make this saw a powerful and productive addition to machine shops, maintenance shops, tool rooms, and fabrication and welding shops. The exclusive swivel control panel allows the operator access to all machine controls from any side of the machine. The exclusive 6-point contact blade guide assemblies give the machine greater accuracy and longer blade life.
- Misuse of this machine can cause serious injury. - For safety, machine must be set up, used and serviced properly. - Read, understand and follow instructions in the Operating Instructions and Parts Manual which was shipped with your machine. When Setting up Machine: - Always avoid using machine in damp or poorly lighted work areas. - Always be sure the machine support is securely anchored to the floor or the work bench. When Using Machine: - Always wear safety glasses with side shields (See ANSI Z87.
from the work area. Make the workshop completely safe by using padlocks, master switches, or by removing starter keys. 19. Know the tool you are using — its application, limitations, and potential hazards. General Electrical Cautions This saw should be grounded in accordance with the National Electrical Code and local codes and ordinances. This work should be done by a qualified electrician. The saw should be grounded to protect the user from electrical shock.
Introduction Operating Instructions This manual includes operating and maintenance instructions for the JET 12-inch by 20-inch Cut Off Band Saw, Model J-7060. This manual also includes parts listings and illustrations of replaceable parts. Controls Cut-Off Saw Features Refer to Figure 1 and 2 for cut-off saw features Blade Guide Supports Blade Wheel Cover Blade Speed Control Control Panel The operating controls for the saw are provided in a control panel on the left side of the machine.
The bottom row of controls include the following: 1. Stop pushbutton is used to stop the saw blade drive motor. 2. Emergency stop pushbutton is used to quickly disconnect electrical power to the machine. 3. Coolant On/Off selector switch is used to start and stop the coolant pump motor. Other Controls Refer to Figures 1 and 2 for location of the following controls: 1. Drive motor speed control: used to set drive motor speed in meters per minute. 2.
Controlling the Cut: Hydraulic Feed Control The weight of the saw arm provides all the force needed to move the saw blade through the workpiece. In fact, if the full weight of the arm is allowed to make the cut, rapid blade wear and poor cutting accuracy will result. A hydraulic feed control is provided on the control panel to provide the operator with a means to control the speed and efficiency of the cutting operation. The hydraulic cylinder is attached to the saw base and the saw head.
Work Set-up Securing the Workpiece for Square Cuts (see figure 5) 1. Raise the saw head. 2. Slide the left vise jaw far enough to the left to allow the workpiece to be placed in the vise. 3. Place the workpiece on the work table. If the workpiece is long, provide support at the other end. It may also be necessary to provide additional downward clamping to hold the workpiece securely on the work table. 4.
rod. Position the stop post against the work piece and tighten the knob in the stop L-bracket. The stop post can be moved left or right as required to place the stop post against the work piece. Starting the Saw WARNING: NEVER OPERATE THE SAW WITHOUT BLADE COVERS IN PLACE AND SECURED. CAUTION: MAKE SURE THE BLADE IS NOT IN CONTACT WITH THE WORKPIECE WHEN THE MOTOR IS STARTED. DO NOT DROP THE SAW HEAD ON THE WORKPIECE OR FORCE THE SAW BLADE THROUGH THE WORKPIECE. 1. Raise the saw head. 2.
Blade Tracking Hex Adjustment Screws Single Adjustment Screw Center Locking Screws Figure 10: Blade tracking and tensioning screws.) Factory or Field Procedure 1. Raise the saw head enough to allow the saw motor to operate. 2. Loosen four knobs securing the blade cover. Lift the cover and swing it backward. 3. Remove the blade guard mounted on the left blade guide support. 4. Remove both blade guide bearing brackets. NOTE: Maintain proper tension at all times using the blade tensioning mechanism. 5.
Blade Guide Bearing Adjustment Proper adjustment of the blade guide bearings is critical to efficient operation of the cut-off saw. The blade guide bearings are adjusted at the Factory. They should rarely require adjustment. When adjustment is required, adjust immediately. 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.
Test cuts can be used to determine whether or not you have adjusted the blade accurately. Use 2-inch round bar stock to perform these test cuts, as follows: 1. With the bar stock securely clamped in the vise, make a cut through the bar stock. (See figure 14.) 2. Mark the top of the bar stock. 3. Move the bar stock about 1/4-inch past the blade so you can begin a second cut. 4. Rotate the bar stock 180 degrees so the mark you made is now at the bottom of the cut. 5. Make a cut through the bar stock. 6.
Servicing Hydraulic Oil WARNING: SHUT OFF ALL ELECTRICAL POWER TO THE MACHINE 1. Remove hydraulic oil reservoir access panel. 2. Check oil level (refer to Figure 16). If level is below the yellow (upper) line, the reservoir should be filled. 3. Disconnect electrical power. 4. Remove reservoir fill cap. 5. Add oil until the level is at the yellow (upper) line. Install reservoir fill cap. 6.
2. Remove the drive belt from the drive motor pulley (see Changing the Drive Belt). 3. Remove motor pulley. 4. Open the motor junction box and disconnect the power cord wires from their terminals. 5. Remove the nuts, washers and bolts that secure the motor to the mounting plate. 6. Installation of a new motor is a reversal of the above steps. Replacing the Drive Wheel 1. Remove the blade (see Changing Blades). 2. Remove the screw, spring washer, and washer from the speed reducer shaft. 3.
1. Remove front blade guide by removing adjustment knob, spring, and shaft. 2. Remove the rear blade guide by removing its attachment screw 3. Install replacement blade guide in the rear guide location. Secure with attachment screw. 4. Install replacement blade guide in the front guide location. Install shaft into guide. Install spring and adjustment knob. 5. Adjust outermost blade guide using adjustment knob. Set the guide so it just contacts the side of the blade.
Machine Setup The saw delivered to you has been adjusted at the factory. A number of test pieces have been cut using the saw to verify the accuracy of cutting. Therefore, the only setup operations required before releasing the saw for service are spotting the saw and establishing the electrical connections to the motor. Uncrating and Spotting Spot the saw where it makes the most sense for the operations you will probably be doing.
Wiring Diagram 19
Troubleshooting Fault Probable cause Suggested remedy Excessive blade breakage 1. Material loose in vise. 2. Incorrect speed or feed. 1. Clamp work securely. 2. Check Machinist’s Handbook for speed/feed appropriate for the material being cut. 3. Check Machinist’s Handbook for recommended blade type. 4. Adjust blade tension to the point where the blade just does not slip on the wheel. 5. Start the motor before placing the saw on the workpiece. 3. Teeth too coarse for material. 4.
Troubleshooting (Continued) Blade is twisting 1. Blade is binding in the cut. 2. Blade tension too high. 1. Decrease feed pressure. 2. Decrease tension on blade Unusual wear on side/back of blade 1. Blade guides worn 2. Blade guide bearings not adjusted. 3. Blade guide bearing bracket is loose. 1. Replace blade guides. 2. Adjust blade guide bearings. 1. Blade tooth pitch too coarse for workpiece. 2. Feed too slow; feed too fast. 1. Use blade with finer tooth pitch.
Replacement Parts This section provides exploded view illustrations that show the replacement parts for the Model J-7060 12-Inch x 20-Inch Semi-Automatic Horizontal Cut-Off Band Saw. Also provided are parts listings that provide part number and description. The item numbers shown on the illustration relate to the item number in the facing parts listing. Order replacement parts from: WHM Tool Group, Inc. 427 New Sanford Road LaVergne, Tennessee 30786 Ph.
130 131 132 134 136 135 133 137 114 115 129 118 121 119 128 127 122 120 117 116 113 108 107 77 125 124 126 123 79 78 110 109 76 65 66 104 7 106 112 111 73 72 103 102 105 75 74 5 4 6 11 10 9 8 2 101 3 71 98 70 69 97 26 15 14 13 68 99 19 20 67 87 100 16 17 18 80 94 95 96 88 89 90 91 25 24 23 22 21 30 93 86 81 29 28 27 92 85 82 83 46 45 44 47 84 48 34 31 32 51 33 50 49 52 43 63 64 39 38 42 40 61 62 37 53 41 36 35 E
35 36 37 38 39 40 41 42 30 27 28 31 32 33 34 Ref No.
Ref No. 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 142 141 143 144 145 Part Number 5512222 5512223 J-5512224 J-5512225 5512226 J-5512227 5512228 5512229 5512230 5512231 J-5512232 5512228 5512234 5512235 5512682 5512237 5512238 5512681 5512240 5512241 5512242 5512243 5512244 5512245 5512246 5512247 Description Screw, Pan Head (M6X15) Valve, Relief Plate, Cover Box, Stationary Screw (M8X16) Plate, Sole Screw (1/4X5/8 In.
0 166 167 255 258 254 259 234 233 158 159 235 232 231 163 149 160 162 161 257 164 148 147 256 165 146 253 See Detail 'A' 248 239 240 241 245 236 224 227 238 243 225 226 228 229 230 244 157 156 152 151 153 154 155 150 247 237 223 203 216 222 221 202 201 246 215 218 214 198 251 252 249 213 212 239 210 194 197 195 211 208 196 209 199 219 217 207 220 204 206 205 200 193 192 191 182 183 186 175 170 Detail 'A' 184 185 190
Part Number 5512248 5512249 5512250 5512251 J-5512252 5512253 5512254 5512255 5512126 5512256 5512257 5512128 J-5512259 J-5512260 5512261 5512146 5512156 5512263 5512264 5512265 5512266 J-5512267 5512268 5512269 J-5512270 J-5512271 5512272 5512273 J-5512274 5512156 5512275 5512276 J-5512277 5512278 5512279 J-5512280 J-5512281 5512282 J-5512283 5512284 5512167 Ref No.
WMH Tool Group 427 New Sanford Road LaVergne, Tennessee 30786 Ph: 800-274-6848 www.wmhtoolgroup.