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G0641 Double Miter Saw

Lowering Speeds

The  lowering  speeds  of  the  hold-downs  and 
blades are independently adjustable. The goal is 
to synchronize these rates so that the hold-downs 
grip  the  workpiece  before  the  blades  begin  the 
cut. After the cut is complete and the blades are 
fully raised, the hold-downs will raise and release 
the workpiece.

When making adjustments, first adjust the lower-
ing speed of the blades, then adjust the lowering 
speed of the hold-downs.

To adjust the lowering and raising rate of the 

saw blades:

1.

  DISCONNECT SAW FROM POWER!

adjusting lowering speeds

3.

  Secure  a  scrap  piece  of  the  same  material 

you will use for the production run under the 
hold-downs, then lower and secure the front 
guard.

4.

  Connect the saw to power, turn the motor on,  

and use the foot pedal actuator to make test 
cuts.

5.

  Adjust the lowering and raising speeds of the 

blades to produce cuts that are without tear 
out (too fast) and without burning (too slow). 

 

Note: 

Turning the speed knob in (clockwise) 

decreases the speed, and turning out (coun-
terclockwise) increases it.

6.

  Continue to make adjustments and test cuts 

until  you  are  satisfied  with  the  lowering  and 
raising  speeds  of  the  blade,  then  re-tighten 
the jam nut to secure the setting.

To  adjust  the  lowering  rate  of  the  hold-

downs:

1.

  DISCONNECT SAW FROM POWER!

2.

  Remove the two thumb screws from the front 

guard and raise it to the upper position.

When  properly  adjusted,  the  hold-downs 

prevent the workpiece from being drawn into 

the blades or thrown from the saw when cut-

ting. Always make sure the hold-downs are 

properly adjusted for the workpiece and that 

they  securely  clamp  the  workpiece  before 

the blades begin the cut.

Figure 17.

 Saw blade lowering and raising 

speed controls (on right side of machine).

Raising Speed Knob

Lowering Speed Knob

2.

  Loosen  the  jam  nuts  on  the  blade  lowering 

and raising speed knobs (see 

Figure 17

).

Summary of Contents for G0641

Page 1: ...R SAW OWNER S MANUAL COPYRIGHT JANUARY 2008 BY GRIZZLY INDUSTRIAL INC WARNING NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL INC TS...

Page 2: ......

Page 3: ...ollection 16 Test Run 17 SECTION 4 OPERATIONS 18 Operation Safety 18 Operational Overview 18 Hold downs 19 Lowering Speeds 20 Fence Stop 21 Replacing Blades 22 SECTION 5 ACCESSORIES 23 SECTION 6 MAINT...

Page 4: ...the part of Grizzly For your convenience we always keep current Grizzly manuals available on our website at www grizzly com Any updates to your machine will be reflected in these manuals as soon as t...

Page 5: ...G0641 Double Miter Saw 3 Machine Data Sheet machine data sheet...

Page 6: ...Left Extension Wing w Scale B Transparent Guard C Front Guard D Oil Reservoir E Safety Hood F ON OFF Magnetic Switch Identification A B C D E F G H I J K G Right Extension Wing H Pneumatic Connection...

Page 7: ...G0641 Double Miter Saw 5 Safety Instructions for Machinery...

Page 8: ...6 G0641 Double Miter Saw...

Page 9: ...ury make sure that proper repairs are completed before re connecting the machine to power 13 EXPERIENCING DIFFICULTIES If at any time you are experiencing difficulties performing the intended operatio...

Page 10: ...service you cur rently have or plan to install We recommend using the plug and receptacle shown in Figure 2 Serious personal injury could occur if you connect the machine to power before com pleting...

Page 11: ...needed 1 4 Hose Clamp 1 Air Compressor 1 Air Hose length as needed 1 Forklift rated for 1500 lbs 1 Items Needed for Setup Your machine was carefully packaged for safe transportation Remove the packag...

Page 12: ...g 1 D Support Legs w Adjustable Floor Mounts 2 E Hex Wrench Set 1 5 10mm 1 F Combo Wrenches 11 13mm 1 12 14mm 1 17 19mm 1 22 24mm 1 23 26mm 1 G Hardware Bag not shown Special Hex Bolts 5 8 11 x 23 8 l...

Page 13: ...protective coating with a solvent cleaner or citrus based degreaser such as Grizzly s G7895 Citrus Degreaser To clean thoroughly some parts must be removed For optimum performance from your machine c...

Page 14: ...hen tighten the jam nuts down to the mounting flange to lock the lifting bolts in place 5 Spread the forklift forks as far as possible and insert them under the machine 6 With assistance to steady the...

Page 15: ...ods for mounting your machine and choose the best that fits your specific application Mounting to Shop Floor NOTICE Anchor studs are stronger and more perma nent alternatives to lag anchors and bolts...

Page 16: ...and mount them to the flanges on both sides of the saw table see Figure 10 with the M8 1 25 x 20 hex bolts and flat washers Note The extension wing with the scale is mounted on the left side of the ma...

Page 17: ...t Valve 2 Lift up on the air pressure knob see Figure 11 and turn it to adjust the air pressure dial to 70 PSI then push the knob down to lock the setting 3 Open the pneumatic access door on the right...

Page 18: ...wood dust while operating Failure to use a dust collec tion system can result in short and long term respiratory illness Recommended CFM at Dust Port 400 CFM Do not confuse this CFM recommendation wit...

Page 19: ...both regu lators then turn the machine ON 6 Listen to and watch for abnormal noises or actions The machine should run smoothly with little or no vibration or rubbing noises Strange or unusual noises s...

Page 20: ...45 cuts in a high production shop This is accomplished by using two opposing 12 saw blades and motors with the blades rotat ing down through the workpiece in guillotine type movement The stock is posi...

Page 21: ...d down jam nuts 6 Position the hold downs horizontally along the mounting bars over the flatest part of the workpiece so that they grip and secure the workpiece against the fence 7 Re tighten the jam...

Page 22: ...g and raising speeds of the blades to produce cuts that are without tear out too fast and without burning too slow Note Turning the speed knob in clockwise decreases the speed and turning out coun ter...

Page 23: ...n lower and secure the front guard Fence Stop Use the fence stop for repetitive cuts of the same dimensions Loosen the lock lever slide the stop along the fence rail to the correct setting then re tig...

Page 24: ...lade arm assemblies and motors 3 Use a 14mm wrench on the inner arbor nut see Figure 35 and a 19mm wrench on the arbor bolt to remove the arbor bolt arbor flange and saw blade Note The left saw blade...

Page 25: ...intain maximum stability for the best cut Each blade is hand straightened to a runout of 0 001 0 002 for maximum cut quality The tooth style 4 points and a flat maximizes steady clean cuts with no bot...

Page 26: ...ANSI Z87 1 2003 specifica tions Buy extras for visitors or employees You can t be too careful with shop safety Figure 28 Our most popular eye protection T20448 H0736 T20452 T20501 T20456 Oldham Pro Se...

Page 27: ...aming these clamps are designed to con sistently hold and secure stock at a 90 angle Clamps uneven thicknesses Figure 32 Bessey Angle Clamp H8888 Kreg Framing Table Assembling frames in a production s...

Page 28: ...safe condition Schedule Vacuum excess wood chips and sawdust and wipe off the remaining dust with a dry cloth If any resin has built up use a resin dissolving cleaner like OxiSolv spray to remove it s...

Page 29: ...face of the rams during opera tion 2 Turn the flow adjustment screw counterclock wise to increase the flow rate of lubricant 3 Flip the valve lever up as shown in Figure 35 to start the flow of lubric...

Page 30: ...e fittings 5 Re install the inner blade guard and blades then lower and secure the front guard before continuing operation 3 Raise the front guard up and remove the inner blade guard and blades to acc...

Page 31: ...0 Blade arbor bolt flange and nut left side shown Inner Arbor Nut Arbor Bolt Flange 3 Use a 14mm wrench on the inner arbor nut see Figure 40 and a 19mm wrench on the arbor bolt to remove the arbor bol...

Page 32: ...lts evenly until there is approxi mately 3 4 deflection of the V belts between the pulleys when moderate pressure is applied see Figure 44 7 Use a 10mm wrench to loosen the tensioning jam nuts and bol...

Page 33: ...ty 8 Ensure power supply is switched on ensure power supply has the correct voltage 9 Check for broken wires or disconnected corroded connections and repair replace as necessary 10 Replace faulty ON O...

Page 34: ...g 1 Applying too much pressure to workpiece 2 V belts loose or worn 1 Reduce blade lowering speed Page 20 2 Re tension replace V belts Page 29 Excessive vibration 1 Loose arbor nut 2 Blade out of bala...

Page 35: ...o trace air flow check for pinched clogged air line and air flow at connections clean repair replace as need ed 6 Test clean replace 7 Test clean replace Hold downs not securing workpiece when cutting...

Page 36: ...arm assemblies 1 DISCONNECT SAW FROM POWER 2 Raise the front guard up and remove the inner blade guard to access the pivot arm assemblies and motors see Figure 45 Figure 45 Guards removed to access pi...

Page 37: ...guard in the down position 11 Make a cut to confirm that the blades cut a 45 angle Repeat the steps above if neces sary Pneumatic Limit Switch The pneumatic limit switch see Figure 48 is activated wh...

Page 38: ...0641 Double Miter Saw Electrical Wiring Diagram Figure 50 Junction block inside pneumatic cabinet Figure 49 ON OFF magnetic switch wiring Figure 51 Safety switch wiring electrical wiring To Motors Pag...

Page 39: ...iter Saw 37 Motor Wiring Diagram motor wiring To Junction Block Inside Pneumatic Cabinet Page 36 Figure 52 Left hand motor wiring Figure 53 Right hand motor wiring To Junction Block Inside Pneumatic C...

Page 40: ...Ref 532 Page 47 Air Pressure Regulator Ref 527 Page 47 Foot Pedal Switch Ref 524 Page 47 Sub Valve 5 Outlet Ref 533 Page 47 Air Regulator Lubricator Ref 511 Page 47 Blade Raising Adjustable Pressure...

Page 41: ...G0641 Double Miter Saw 39 SECTION 8 PARTS Cabinet Breakdown...

Page 42: ...RENT GUARD CENTER 22 P0641022 PNEUMATIC ACCESS DOOR 7 PB83M HEX BOLT M6 1 X 16 23 P0641023 PNEUMATIC CONTROL BOX 8 PW03M FLAT WASHER 6MM 24 P0641024 DOOR LATCH 9 P0641009 TRANSPARENT GUARD SIDE 25 P06...

Page 43: ...G0641 Double Miter Saw 41 Drive System Breakdown table inserts...

Page 44: ...10 110 PW01M FLAT WASHER 8MM 133 PFH01M FLAT HD SCR M5 8 X 15 111 PB20M HEX BOLT M8 1 25 X 35 134 P0641134 ALUMINUM BLOCK 112 P0641112 ARBOR BOLT M12 1 75 X 40 RH 135 P0641135 BAKELITE INSERT RIGHT 1...

Page 45: ...2MM 213 P0641213 PIVOT HEAD NUT 204 PN09M HEX NUT M12 1 75 214 PSS01M SET SCREW M6 1 X 10 205 P0641205 TIE ROD 215 PB120M HEX BOLT M10 1 5 X 65 206 P0641206 PIVOT BRACKET 216 PLW06M LOCK WASHER 10MM 2...

Page 46: ...304 PRP93M ROLL PIN 6 X 25 316 P0641316 EXTENSION WING RIGHT 305 P0641305 FENCE SCALE 0 16 1 2 317 P0641317 EXTENSION WING LEFT 306 P0641306 FENCE SCALE 16 1 2 64 318 P0641318 FENCE LEFT 307 P0641307...

Page 47: ...G0641 Double Miter Saw 45 Electrical Lubrication Systems Breakdown...

Page 48: ...1412 3 OL RELAY SDE RA 30 22 34 404 3 P0641404 3 S CAPACITOR COVER 412 4 P0641412 4 SWITCH COVER 404 4 PC500A S CAPACITOR 500M 125V 1 3 4 X 3 3 4 412 5 P0641412 5 SWITCH COVER SCREW 404 5 P0641404 5 R...

Page 49: ...G0641 Double Miter Saw 47 Pneumatic System Breakdown pneumatic system breakdown...

Page 50: ...4 X 6MM 509 PS18M PHLP HD SCR M4 7 X 25 529 PSB33M CAP SCREW M5 8 X 12 510 PSB01M CAP SCREW M6 1 X 16 530 P0641530 ELBOW CONNECTOR 1 8 511 P0641511 AIR REGULATOR LUBRICATOR 3 8 531 P0641531 AIR PRESS...

Page 51: ...4777 or www grizzly com to order new labels REF PART DESCRIPTION REF PART DESCRIPTION 601 P0641601 MACHINE ID LABEL 607 P0641607 DISCONNECT POWER LABEL VERT 602 P0641602 EYE LUNG HAZARD LABEL VERT 608...

Page 52: ...50 G0641 Double Miter Saw...

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Page 55: ...WARRANTY AND RETURNS WARRANTY AND RETURNS...

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