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Operator's Manual
CRAFTSMAN ++
_ PROFESSI ONAL_
1 8"
Metal Cutting
BAND SAW WITH WELDER
Model No.
351.21 4300
CAUTION: Read and follow
all Safety Rules and Operating
Instructions before First Use
of this Product.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
www.sears.com/craftsman
25173.01 Draft (05/21/07)
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BE PREPARED FOR JOB • Wear proper apparel. Do not wear loose clothing, gloves, neckties, rings, bracelets or other jewelry Warranty .................................... 2 which may get caught in moving parts of machine. SafetyRules............................... 2-3 • Wear protective hair covering to contain long hair. Unpacking .................................. 3 • Wear safety shoes with non-slip soles. Assembly ................................... 3 • Wear safety glasses complying with United
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• Avoid accidental start-up. Make sure that the tool is WARNING: Be careful not to touch overhead power in the "off" position before plugging in. lines, piping, lighting, etc., if lifting equipment is used. Band saw weighs approximately 1000 Ibs. Proper tools, • Do not force tool. It will work most efficiently at the equipment and qualified personnel should be employed rate for which it was designed. in all phases of unpacking and installation. • Keep hands away from moving parts and cutting IMP
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POWER SOURCE Check with a qualified electrician if grounding instruc- tions are not understood or if in doubt as to whether Band saw requires a 115 or 230 volt, 60 Hz power the tool is properly grounded. source. Band saw is shipped with motor and controls Green (or green and yellow) conductor in cord is the prewired for 115 volt operation. Line cord does not grounding wire. If repair or replacement of the electric have plug. A 115 volt, 20/30A three-prong plug must be attached to the line cord.
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Rewire saw motor to 230 volts (See Figure 3). EXTENSION CORDS • The use of any extension cord will cause some drop in voltage and loss of power. • Wires of the extension cord must be of sufficient size to carry the current and maintain adequate voltage. • Use the table to determine the minimum wire size (A.W.G.) extension cord. 115V • Use only 3-wire extension cords having 3-prong grounding type plugs and 3-pole receptacles which accept the tool plug. • If the extension cord is worn, cut or dama
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SPECIFICATIONS The control panel for the blade welder is shown in Figure 7. The welding circuitry is energized independent Depth of throat ............................. 18" of the band saw circuitry. To operate the welder, plug in Maximum depth of cut ...................... 10s/4 '' the line cord to a proper power source. Table size ........................... 23% x 21%" CAUTION: Do not operate the band saw and the Table tilt ............................ -15 to +15 ° welder at the same time. Whe
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TENSIONING BLADE 0.002" Refer to Figure 15. 0.002" • Tension blade by rotating handwheel (Key No. 38). Be sure blade guides do not interfere with blade path. • Tighten blade until it is properly tensioned. Blade • A properly tensioned blade will ring slightly when back Guide of blade is plucked (like a string on an instrument). NOTE: Check tension of new blade. Additional tension may be required after a few minutes of operation. TRACKING BLADE Refer to Figure 15. • Track blade after it has been
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THICKNESS: 1/4" 1/4-1" .3 tt .6 tr 6-1O" MATERIAL 230/18 200/14 200/10 150/6 150/4 Highcarbonsteel 200/18 150/14 130/12 100/6 100/4 Freecutting steel 200/18 156/14 130/12 100/8 100/4 Ferro-manganese Ferro-nickel 165/18 130/14 100/12 75/8 75/4 Ferro-nickel-chrome 130/24 100/18 75/14 66/8 66/6 150/18 130/14 100/12 75/8 75/6 Ferro-molybdenum 165/18 100/14 75/12 66/8 66/6 Ferro-chrome (med.) 100/24 75/14 66/10 66/8 66/6 Ferro-chrome (high) 180/18 150/14 115/12 100/8 66/4 Manganese steel 150/18 100/1
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ADJUSTING TABLE ANGLE MITER GAUGE Refer to Figure 16. • Use miter gauge (not provided) for securing and holding workpiece at desired angle to produce Angle cuts can be made by tilting table left to right. angled cuts. Use scale to adjust gauge to desired Loosen socket head bolts (Key No. 12) to tilt table up angle. to 15° right or left. Use angle scale to set table angle (Key No. 18). • Never use miter gauge (not provided) and rip fence at the same time. The blade might bind in the work- TYPE OF
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• Tooth grinding procedure must be done carefully in order to grind the proper number of teeth and not to grind below gullet which would weaken the blade. BLADE WELDING Incorrect - Blades Clamped AtAngle Refer to Figures 7 and 12. • To set weld pressure adjustment knob, turn the knob counterclockwise to increase the pressure. The pres- Incorrect - Blades Not Ground Square sure adjustment knob controls force applied to the movable jaw. NOTE: Weld pressure adjustment knob must be reset to "0" afte
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Heat build-up in the tool can cause serious damage to the tool. Allow transformer to cool down to room temperature between each welding or each anneal- WARNING: Make certain that unit is disconnected ing operation. It is a safe procedure to let the trans- from power source before attempting to service or former be idle for at least 3 minutes between remove any component. successive welding/annealing operations. CLEANING BLADE ANNEALING Refer to Figure 15. • After the blade has been welded, the w
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SYMPTOM CORRECTIVE ACTION POSSIBLE CAUSE(S) 1. Material not secure on table Excessive blade breakage 1. Squarely place work on table 2. Incorrect speed or feed 2. Check Blade Speed (page 7) 3. Blade too coarse for material 3. Use finer pitch blade 4. Incorrect blade tension 4. Tension blade properly; see "Operation" 5. Teeth in contact with work before 5. Place blade in contact with work after saw is sawing started and has reached full speed 6. Blade rubs on wheel flange 6. Adjust wheel alignmen
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SYMPTOM CORRECTIVE ACTION POSSIBLE CAUSE(S) 1. Reduce tension on blade Motor running too hot 1. Blade tension too great 2. Blade too coarse for work 2. Use blade with finer teeth (typical when cutting pipe) 3. Use blade with coarser teeth 3. Blade too fine for work (typical when cutting slick or soft material) 4, 4. Excessive dirt and chips Clean thoroughly; vacuum motor and speed change mechanism Saw will not start 1, Key switch not on 1. Turn key to on 2. Not plugged in 2. Plug into supply 3.
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Model 351.21 4300 Figure 13 - Replacement Parts Illustration for Switch, Shear and Deflector 8_ 4 13 20 14 39 ? 46 29 \1 28 26 38 37 29 26 2i 30 31 "30 14
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KEY KEY NO. PART NO. DESCRIPTION QTY. NO. PART NO. DESCRIPTION QTY. 1 20258.00 Switch Plate 1 25 STD870625 6-1.0 x 25mm Socket 2 Head Bolt* 2 18637.00 1 Magnetic Starter 26 20260.00 3 17737.00 1 Spacer 4 Stop Switch Assembly 27 20261.00 Pin 1 4 17738.00 1 Start Switch Assembly 28 23928.00 5 STD863408 4-0.7 x 8mm Pan Head Screw* 6 Left Alignment Bracket 1 29 STD851006 6mm Flat Washer* 7 6 15561.00 Bracket 2 30 STD840610 6-1.0mm Hex Nut* 3 7 STD863508 5-0.8 x 8mm Pan Head Screw* 14 31 23930.00 8 1
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Model 351.21 4300 Figure 14 - Replacement Parts Illustration for Welder 52 47 54 49 6 30 26 14 _25 44 , 63 71 _,_---- 53 11 39
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KEY KEY NO. PART NO. DESCRIPTION QTY. NO. PART NO. DESCRIPTION QTY. 1 18640.00 Welder Cover 1 34 18646.00 1 Weld Button Assembly 2 20229.00 1 35 01474.00 5mm Serrated Washer 4 Spacer 3 20230.00 1 36 STD852006 6mm Lock Washer* 2 Grinding Wheel 4 STD851006 6mm Flat Washer* 1 37 20238.00 Shaft 1 5 STD840610 6-1.0mm Hex Nut* 1 38 20239.00 Cam 1 6 20231.00 Grinder Cover 1 39 STD863506 5-0.8 x 6mm Pan Head Screw* 2 7 18641.00 Grinder Guard 1 40 STD851006 6mm Flat Washer* 1 8 05991.00 #10-24 x 1/2" Fla
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Model 351.21 4300 Figure 15 - Replacement Parts Illustration for Wheels and Speed Handle 9 8 5 2 3 4 29 30 ] 26 70, 36 "_33 o_ J 61 \ 62 64 45 44 22 t t 51 54 55 18
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KEY KEY NO. PART NO. DESCRIPTION QTY. NO. PART NO. DESCRIPTION QTY. 1 01900.00 1 37 16992.00 2 3AMI-25 Retaining Ring 5 x 5 x 16mm Key 2 18660.00 Tread 2 38 16947.00 Handwheel 1 3 STD315555 2 39 06169.00 2 6005ZZ Bearing* 3AM1-18 Retaining Ring 4 04790.00 2 40 STD851006 6mm Flat Washer* 4 3BMI-47 Retaining Ring 5 18662.00 1 41 25404.00 Blade Guard 1 Upper Wheel 6 16949.00 Nut 1 42 N/A Cabinet 1 7 16954.00 Stud 1 43 17694.00 Gasket 1 8 16955.00 Pivot 1 44 18707.00 1 Flange Bushing 9 STD852010 10-
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Model 351.214300 Figure 16 - Replacement Parts Illustration for Table 1 46 55 \ 42 30 43 6 11 10 *'/28 18 49 5 r,o o 38 37 9 4( 23 _ 28 26 16 17 20 24 44:25 32 \ 20 21
