Instruction/ maintenance manual of the product G7948 Grizzly
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1 2 SP E E D DRI L L P R E SS MODE L G 794 7/ G794 8 INST R U CTIO N MA NU A L COPYRIGHT © AUGUST , 20 05 BY GRIZ ZL Y INDUSTRIA L, INC. REVISED JANUAR Y , 2007 . W ARN IN G : NO PO RTI ON OF TH IS MA NUAL MA Y BE REPR ODUC ED IN AN Y S HAPE OR FORM WI TH OUT TH E W RI T TEN APPR OV AL OF GR IZ ZL Y IN DUS TRI AL , IN C.
W A R N I N G Som e dus t c r ea te d b y po we r sa ndi ng , sa wi ng , gri nd - in g , d ril li ng , an d o the r con st ructio n a ctivi ti es con tai ns che mica ls kno wn to th e Sta te of C al ifo rnia t o cau se cance r , bir th de f ects o r oth e r rep roductiv e ha rm.
T able of Con ten ts INTRODUCTION ............................................................................................................................... 3 Foreword ..............................................................................
SECTION 7: SERVICE ................................................................................................................... 35 About Service ...................................................................................................
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -3 - If you have any comments regarding this manual, please write to us at the address below: Grizzly Industrial, Inc. C / O Technical Documentation Manager P.O. Box 2069 Bellingham, WA 98227-2069 We stand behind our machines.
- 4- G7 94 7/G 7948 1 2 Speed Floor Drill P ress Specifications, while deemed accurate, are not guaranteed. PAGE 1 OF 2 Model G7947 MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G7947 12 SPEED 17" FLOOR DRILL PRESS Product Dimensions: Weight .
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -5 - Specifications, while deemed accurate, are not guaranteed. PAGE 2 OF 2 Model G7947 Other Related Information Base Length .................................................................................
- 6 - G 794 7 /G7 948 1 2 Speed Floor Drill Press Specifications, while deemed accurate, are not guaranteed. PAGE 1 OF 2 Model G7948 MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G7948 12 SPEED 20" FLOOR DRILL PRESS Product Dimensions: Weight .
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 7 - Specifications, while deemed accurate, are not guaranteed. PAGE 2 OF 2 Model G7948 Other Related Information Base Length ................................................................................
-8- G 794 7 /G7948 1 2 Sp eed Floor Drill Press 4 8 9 7 11 5 4 3 2 6 Identi f ica tion Figure 1. Right-side controls. Figure 2. Left-side controls. Refer to the list below and see Figures 1 & 2 to become familiar with the drill press controls. 1. Light Switch: Turns light ON/OFF .
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -9 - 4. ALWAYS USE HEARING PROTECTION WHEN OPERATING MACHINERY. Machinery noise can cause permanent hearing damage. 5. WEAR PROPER APPAREL. DO N OT wear loose clothing, gloves, neckties, rings, or jewelry which may get caught in moving parts.
- 1 0 - G 794 7 /G7 948 1 2 Speed Floor Drill Pr ess 7. ONLY ALLOW TRAINED AND PROP- ERLY SUPERVISED PERSONNEL TO OPERATE MACHINERY. Make sure oper - ation instructions are safe and clearly understood. 8. KEEP CHILDREN AND VISITORS AWAY. Keep all children and visitors a safe dis- tance from the work area.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 1 1 - 1 . EYE / F ACE / HAND PROTECTI ON. A face shield used wit h safe t y glasses is rec - ommended. Alwa ys keep hands and fin - gers awa y from the dr ill bit. Nev er hold a workpiece by hand while drilling ! DO NOT wea r glov es when o perating the drill.
- 1 2- G 794 7 /G7948 1 2 Spee d Floor Drill Press Serious per sonal injury could occur if you connect the machine to the p ower sourc e before you have complet ed the set up pr o - cess . DO NOT conne ct the machine to the power source until instruc ted to d o so.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 1 3 - In the ev ent of an elec trical shor t, grounding reduces the risk of ele ctric shock . The grounding wire in t he power cord must be properly co nnect - ed to the grounding prong on the plug; lik ewise, the outlet must be properly installed and ground - ed.
- 1 4- G794 7 /G7 948 1 2 Speed Floor Drill Pr ess The Model G794 7 /G7 948 was carefully pack ed when it lef t our warehouse . If you d iscov er the mach ine is damage d af ter you hav e s igne d for deliv er y , please imm ediately call Customer Service at ( 5 7 0 ) 5 46 - 966 3 for advice.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 1 5 - In v en t or y Figure 4. G7947/G7948 box inventory. G7948 G7948 G7947 G7947 1 If any nonproprietary parts are missing (e.g. a nut or a washer), we would be glad to replace them, but for the sake of expediency, you can get replacements at a hardware store.
- 1 6 - G7 94 7/G7 948 1 2 Speed Floor Drill P ress Hard w are Recogn iti on Cha r t.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 1 7 - Figure 5. W orking clearances. Fl oo r Loa d Refe r to t he M achine Data Sh eet for weight and footprint spe ciifcations for your machine. Some residential floors ma y requir e additional rein force - ment to suppor t both the machine and operator .
- 1 8 - G 794 7/G 7948 1 2 Speed Floor Dr ill Press Figure 6. Column secured to base. Compone nts and Hardware N eed ed : Qt y Base ................................................................... 1 Column ..........................................
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 1 9 - 3. Remov e the column ring by loosening the setscrew , and remove the rack. 4. Place t he rac k inside of t he table sup por t assembly , mesh it together with the pinion, and slide the table suppor t /rack assembly ov er the column, as shown in Figure 9 .
-20- G794 7 /G7 948 1 2 Speed Floor Drill Pr ess Compone nts and Hardware N eed ed : Qt y Headstock .......................................................... 1 The headstock must be mounted on the col - umn /base assemb ly before the dr ill press can be operated.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 2 1 - 6. Suspend a plum bob from the center of the headstock spindle so it is over the tape/ruler as shown in Figure 13 . 7. Center the headstock directly over the base as indicated by the plum bob and ruler.
-22- G 794 7/G 7948 1 2 Speed Floor Dr ill Press Figure 16. Seating arbor into chuck. Tang-Side Up Figure 18. Downfeed handles and belt cover knob installed. Compone nts and Hardware N eed ed : Qt y Downf eed Handles ..................................
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -23- Compone nts and Hardware N eed ed : Qt y T ab le ................................................................... 1 The tab le must b e installed to properly su ppor t the workpiece during operation.
-2 4 - G 794 7/G 794 8 1 2 S peed Floor Drill Press T est Ru n Wear safety glasses whenever starting or using machine. Failure to comply may result in serious personal injury. Keep loose clothing rolled up and out of the way of machinery and keep hair pulled back.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -25- For your co nv enience, the adjustments listed below hav e been per formed at the factor y; how- ev er , be cause of the many va riables involv ed with.
-26- G7 94 7/G 7948 1 2 Speed Floor Drill P ress Lo o se h ai r an d cl ot h - ing could get caught in machiner y and cause seri - ous per sonal injury .
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 27 - Ch oo si ng Sp eeds T w i s t / B r a d P o i n t D r i l l B i t s S o f t W o o d H a r d W o o d P l a s t i c B r a s s A l u m i n u m M i l d S.
-28- G 794 7/G 794 8 1 2 Sp eed Floor Drill Press D C B A 4 3 2 1 4 3 2 1 1 RPM 210 BEL T:A-1.4-4 D C B A 4 3 2 1 4 3 2 1 2 RPM 310 BEL T:B-2.4-4 D C B A 4 3 2 1 4 3 2 1 3 RPM 400 BEL T:A-1.3-3 D C B A 4 3 2 1 4 3 2 1 4 RPM 440 BEL T:C-3.4-4 D C B A 4 3 2 1 4 3 2 1 5 RPM 630 BEL T:B-2.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -29- The Model G7947/G7948 is designed for drilling holes in wood or metal. The basic operation of a drill press is lining up your drill bit with the intended hole location, turning the drill press ON , and using the down feed levers to move the spinning drill bit into the workpiece.
-3 0 - G 794 7 /G7 948 1 2 Speed Floor Drill Pr ess Figure 29. Depth stop components. Depth Nut Jam Nut Depth Stop Stud The Model G7947/G7948 has a depth stop that allows you to drill repeated non-through holes to the same depth every time.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -3 1 - Figure 31. Inner and outer drift-key slots aligned. Figure 32. Using drift key to remove arbor. Both Slots Aligned The arbor can be removed to install other Morse Taper tooling in the spindle. A drift key is included to help remove the arbor or other tooling from the spindle.
-32- G 794 7 /G7 948 1 2 Speed Floor Drill Press SE CTION 5 : A CC ESS ORIE S Figure 35. Model G8583 5 ⁄ 8 " Keyless Drill Chuck JT #3. G8583— 5 ⁄ 8 " Keyless Drill Chuck JT #3 Industrial grade keyless chucks are excellent for quick bit changes.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -33 - Figure 39. Mo del G88 65 13-P C Alloy Drill Bits . G8865—Cobalt Alloy Drill Bits 13-PC. Set G8866— Ste elex ® Cob alt Alloy D rill Bits 21 - PC S.
-3 4- G7 94 7/G 7948 1 2 Speed Floor Drill Press Alwa ys disconnec t power to th e ma chi ne b ef or e per forming maintenance. Failure to d o this may result in serious p erson - al injury . Cleaning the Model G 794 7 /G7 948 is relatively easy . V acuum ex cess wood chips and sawdust, and wipe of f the remaining dust with a dr y c loth.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -35 - This sect ion is provided for your conv enience — it is not a substitute for the Grizzly Ser vice Depart ment.
-3 6- G7 94 7 / G 7948 1 2 Speed Floor Drill P ress Symptom Possible Cause Possible Solution Machine has vibration or noisy operation. 1. Motor or component is loose. 2. Belts are slapping belt cover. 3. V-belt(s) is worn or is loose. 4. Motor fan is rubbing on fan cover.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -37 - Symptom Possible Cause Possible Solution Dril ling stop s, but the motor sti ll oper- ates. 1. The belt is loose or worn. 2. The pulley for the spindle shaft or the motor is slipping on the shaft. 3. Bit slips in chuck.
-3 8- G7 94 7/G 7948 1 2 Speed Floor Drill Press Figure 41. Depth stop assembly. Calibration Nut Jam Nut Depth Stop Flange The drill press comes fitted with a depth stop to use when drilling multiple holes at the same depth. The scale on this depth stop can be calibrated if it ever becomes incorrect.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -39 - Figure 43. Loosening cover and jam nut 3. While holding the spring lock cover against the side of the head stock so the cover stays splined with the locking lug; loosen the jam nut and loosen the cover nut approximately 1 ⁄ 4 " (see Figure 43 ).
- 40 - G 794 7 / G 7948 1 2 Speed Floor Drill Press Elect r ica l Com pone nts Figure 45. Light socket with dust plug removed (for 110V operation only). Figure 46. Motor wiring inside junction box. Figure 47. Motor wiring diagram for 110/220V, located on inside cover of motor junction box.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 4 1 - .
- 42 - G 794 7 /G7948 1 2 Spee d Floor Drill Press G 794 7 Stand / T ab le Brea k do wn .
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -43 - G 794 7 H eads toc k Brea k do wn .
- 44 - G 794 7 /G7 948 1 2 Speed Floor Drill Press REF PART # DESCRIPTION REF PART # DESCRIPTION 1 P7947001 BASE 34 P7947034 KNOB BOLT M10-1.5 X 35 2 PB27M HEX BOLT M12-1.75 X 30 35 PB07M HEX BOLT M8-1.25 X 25 3 P7947003 RACK 36 PW01M FLAT WASHER 8MM 4 P7947004 COLUMN 37 PN03M HEX NUT M8-1.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -45 - REF PART # DESCRIPTION REF PART # DESCRIPTION 62 PVA26 V-BELT A-26 4L260 94 P7943094 LIGHT BASE 63 P7947063 CENTER SHAFT 94A P7943094A SCREW 65 P6202 .
- 46 - G 794 7 /G7 948 1 2 Speed Floor Drill Press G 794 8 Stand / T able Brea k do wn .
G 794 7 /G7948 1 2 Sp eed Floor Drill Press - 4 7 - G 794 8 He ad st ock Break do wn .
- 48 - G 794 7 / G 7948 1 2 Speed Floor Drill P ress REF PART # DESCRIPTION REF PART # DESCRIPTION 1 P7948001 BASE 34 P7947034 KNOB BOLT M10-1.5 X 35 2 PB27M HEX BOLT M12-1.75 X 30 35 PB07M HEX BOLT M8-1.25 X 25 3 P7947003 RACK 36 PW01M FLAT WASHER 8MM 4 P7947004 COLUMN 37 PN03M HEX NUT M8-1.
G 794 7 /G7948 1 2 Sp eed Floor Drill Press -49 - REF PART # DESCRIPTION REF PART # DESCRIPTION 62 PVA29 V-BELT � A-29 � 4L290 94 P7943094 LIGHT BASE 63 P7947063 CENTER SHAFT 94A P7943094A SCREW 6.
-50 - G794 7 /G7 948 1 2 Speed Floor Drill Pr ess Grizzly Industrial, Inc. warrants ev er y produc t it sells for a period of 1 year to the original purchaser from the date of purchase. T his warranty d oes not apply to defects due direct ly or indirec tly to misuse, abuse, negligence, accidents, repairs or altera tions or lack of maintenance .
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An important point after buying a device Grizzly G7948 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Grizzly G7948 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 Grizzly G7948 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Grizzly G7948 you will learn all the available features of the product, as well as information on its operation. The information that you get Grizzly G7948 will certainly help you make a decision on the purchase.
If you already are a holder of Grizzly G7948, 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 Grizzly G7948.
However, one of the most important roles played by the user manual is to help in solving problems with Grizzly G7948. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Grizzly G7948 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
