Instruction/ maintenance manual of the product J-7020 Jet Tools
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Operating Instructions and Part s Manual 10-Inch x 16-Inch Horizont al Band Saw Models: J-7020, J-7040 WHM TOOL GROUP , Inc. 427 New Sanford Road LaV ergne, T ennessee 30786 Part No. M-414472 Ph.: 800-274-6848 Revision A2 04/09 www .wmhtoolgroup.com Copyright © 2009 WMH T ool Group, Inc.
W arranty and Service WMH T ool Group, Inc., warrants every product it sells. If one of our tools needs service or repair , one of our Authorized Service Centers located throughout the United S tates can give you quick service.
3 T able of Content s General S pecifications ............................................................................................................................... ......... 4 S pecifications .................................................
4 General S pecifications Model Stock Number J-7020 414472 J-7040 414478 The JET Models J-7020/J-7040 Horizontal Cut-Off Bandsaws are ruggedly built, precision machines de- signed for either wet or dry applications.
5 - Always follow instructions in Operating Instruc- tions and Parts Manual when changing acces- sory tools or parts. - Never modify the machine without consulting JET Corporation. Y ou - the Stationary Power T ool User - Hold the Key to Safety . Read and follow these simple rules for best results and full benefits from your machine.
6 Safety Instructions on Sawing Systems 9. 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 specifica- tions. Use of eye wear which does not comply with ANSI Z87.
7 Introduction This manual includes the operating and maintenance instructions for the JET 10-inch by 16-inch Cut Off Band Saw , Models J-7020/J-7040. This manual also includes parts listings and illustrations of replaceable parts.
8 Raising/Lowering the Saw Head 1. Lift the saw head using the handle on the far left side of the saw head. 2. T o lower the saw head, press the green pushbutton on the right side of the control panel. 3. T o adjust the feed rate, adjust the feed rate control valve knob on the top of the saw head (see figure 3).
9 A minimum of three teeth should be on the work piece at all times for proper cutting. The blade and workpiece can be damaged if the teeth are so far apart that they straddle the workpiece.
10 S t arting the Saw W ARNING: NEVER OPERA TE THE SA W WITHOUT BLADE COVERS IN PLACE AND SECURED. CAUTION: MAKE SURE THE BLADE IS NOT IN CON- T ACT WITH THE WORKPIECE WHEN THE MOTOR IS ST ARTED. DO NOT DROP THE SA W HEAD ON THE WORKPIECE OR FORCE THE SA W BLADE THROUGH THE WORKPIECE.
11 Coolant Flow CAUTION: THE COOLANT PUMP MUST BE SUB- MERGED BEFORE OPERA TING TO PREVENT DAM- AGE T O THE PUMP . 1. The blade guides are fitted with coolant fittings. Coolant is provided to the fittings through intercon- necting tubing. The coolant is dispensed directly onto the saw blade.
12 the wheel shoulder . Put a 6-inch length of paper between the blade and the wheel as shown in figure 1 1. The paper should not be cut as it p asses be- tween the wheel shoulder and the blade. 9. T urn the single hex adjustment screw a small amount.
13 tion of the disk you have cut from the bar stock. Mea- sure at the top and bottom of the disk. The saw blade can be considered correctly adjusted when the variation measure is no more than 0.
14 1. Ball bearings: the bearings are lubricated and sealed—periodic lubrication is not required. 2. Blade guide bearing: the bearings are lubricated and sealed—lubrication is not required. Inspect periodi- cally . 3. Idler wheel bushing: the bearings are lubricated and sealed—lubrication is not required.
15 Adjusting the Blade Guides The cut-off saw has adjustable blade guide supports (see figure 17). The blade guide supports allow you to set the blade guides for varying widths of workpieces. T o make accurate cuts and prolong blade life, the blade guide supports should be set to just clear the workpiece to be cut.
16 Replacement of Guide Bearings Referring to Firgure 18, remove the cap screw from the bearing being replaced. Separate the bushing and cap screw from the bearing. Discard the bearing. NOTE: There is a light press fit between the bearing and the bushing.
17 Figure 21: Model J-7020 cut-off saw wiring diagram 4. Close the blade cover and secure with four knobs. Electrical Observe the following when connecting to the power source.
18 Figure 24: Model 7040 cut-off saw wiring diagram Figure 25: Connection diagram for 3ph motor.
19 T roubleshooting Fault Excessive blade breakage Premature blade dulling Bad cuts (out-of-square) Bad cuts (rough) Probable cause 1. Material loose in vise. 2. Incorrect speed or feed. 3. T eeth too coarse for material. 4. Incorrect blade tension. 5 .
20 Blade is twisting Unusual wear on side/back of blade T eeth missing/ripped from blade Motor running too hot No coolant flow Excessive speed reducer noise/ vibration 1. Decrease feed pressure. 2. Decrease tension on blade 1. Replace blade guides. 2 .
21 Exploded V iew - Base.
22 Parts List - Base 21-1 5519494 Set Screw (5/16"x1/2") 1 2 2 J-5712481 Lead Screw Bracket 1 2 3 5712491 Screw (5/16" x 1/4") 2 23-1 TS-0720081 Spr i n g Wa s h e r ( 5/ 1 6 ".
23 Parts List - Base ITEM P ART NO. NO. DESCRIPTION QTY 46-1 TS-0051021 Hex Cap Screw 4 (5/16" x 5/8") 46-2 TS-0720081 S pring Washer (5/16") 4 46-3 TS-0680031 Washer (5/16") 4 4 7.
24 194 5713251 Screw (1/4" x 3/8") 4 195 J -5713261 Control Column 1 196 5713271 Screw (1/4" x 3/4") 2 196-1 5519510 Nut (1/4") 2 197 J-5713281 Swivel Bushing 1 1 9 8 J-571329.
25 Exploded View - Head.
26 100-3 TS-0680031 Washer (5/16") 1 100-4 TS-0720081 S pring Washer (5/16") 2 100-5 5519680 Hex Cap Screw 1 (5/16" x 1-1/4") 100-6 5519506 Hex Cap Screw 1 (5/16" x 1/2").
125A 5717138 Eccentric Shaft Assy . 2 125B 5517142 Center Shaf t Assy . 2 126 5713871 Blade Guide Tung. Carb. 2 126-1 5713661 Washer (1/4") 8 126-2 5713651 S pring W asher (1/4) 4 126-3 5519508 H.
230 5713941 Screw (5/16 x 1-3/4) 4 23 1 5712881 S pring W asher (1/2") 4 232 5517141 Eccentric Shaft Bushing 2 233 5517140 Center Shaft Bushing 2 234 5713861 Ball Bearing (6201ZZ) 8 235 5713761 Washer (1/2") 4 236 5519696 Arm S top 1 236-1 571 1091 Nut (1/2") 1 ITEM P ART NO.
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32 WMH T ool Group, Inc. 427 New Sanford Road LaV ergne, T ennessee 30786 Ph: 800-274-6848 www .wmhtoolgroup.com.
An important point after buying a device Jet Tools J-7020 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Jet Tools J-7020 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Jet Tools J-7020 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Jet Tools J-7020 you will learn all the available features of the product, as well as information on its operation. The information that you get Jet Tools J-7020 will certainly help you make a decision on the purchase.
If you already are a holder of Jet Tools J-7020, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Jet Tools J-7020.
However, one of the most important roles played by the user manual is to help in solving problems with Jet Tools J-7020. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Jet Tools J-7020 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
