12 SPEED DRILL PRESS User Manual G7947, G7948

ManualsBrandsGrizzly ManualsDrill12 Speed Press G7947

12 SPEED DRILL PRESS

MODEL G7947/G7948

INSTRUCTION MANUAL

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#TR7410 PRINTED IN CHINA

G7947 G7948

Summary of content (56 pages)

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2 SPEED DRILL PRESS MODEL G7947/G7948 INSTRUCTION MANUAL G7947 COPYRIGHT © AUGUST, 2005 BY GRIZZLY INDUSTRIAL, INC. REVISED JANUARY, 2007. WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
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WARNING Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are: • Lead from lead-based paints. • Crystalline silica from bricks, cement, and other masonry products. • Arsenic and chromium from chemically treated lumber. Your risk from these exposures varies, depending on how often you do this type of work.
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Table of Contents INTRODUCTION ............................................................................................................................... 3 Foreword .................................................................................................................................... 3 Contact Info ................................................................................................................................ 3 G7947 Machine Data Sheet .....................................
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SECTION 7: SERVICE ................................................................................................................... 35 About Service ........................................................................................................................... 35 Troubleshooting........................................................................................................................ 35 Depth Stop Calibration .......................................................................
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INTRODUCTION Foreword Contact Info We are proud to offer the Model G7947/G7948 12" Drill Press. This machine is part of a growing Grizzly family of fine woodworking and metalworking machinery. When used according to the guidelines set forth in this manual, you can expect years of trouble-free, enjoyable operation and proof of Grizzly’s commitment to customer satisfaction.
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G7947 Machine Data Sheet 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 ............................................................................................................................................................. 270 lbs. Length/Width/Height ......................................................................................................................
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Other Related Information Base Length ........................................................................................................................................ 22-1/2 in. Base Width ..........................................................................................................................................14-1/2 in. Quill Diameter .........................................................................................................................................2.85 in.
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G7948 Machine Data Sheet 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 ............................................................................................................................................................. 320 lbs. Length/Width/Height ................................................................................................................
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Other Related Information Base Length .............................................................................................................................................. 23 in. Base Width ..........................................................................................................................................17-1/2 in. Quill Diameter .......................................................................................................................................2.825 in.
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Identification Refer to the list below and see Figures 1 & 2 to become familiar with the drill press controls. Refer to the list below to become familiar with the drill press terms and definitions. 1. Light Switch: Turns light ON/OFF. 2. Power Switch: Turns motor ON/OFF. Headstock: The cast iron upper portion of the drill press, which houses the quill and work light, and supports the motor and belt housing. 3. Belt Tension Lever: Adjusts motor location to increase/decrease belt tension.
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SECTION 1: SAFETY For Your Own Safety, Read Instruction Manual Before Operating this Machine The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words which are intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures.
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Safety Instructions for Machinery 7. ONLY ALLOW TRAINED AND PROPERLY SUPERVISED PERSONNEL TO OPERATE MACHINERY. Make sure operation instructions are safe and clearly understood. 8. KEEP CHILDREN AND VISITORS AWAY. Keep all children and visitors a safe distance from the work area. 9. MAKE WORKSHOP CHILD PROOF. Use padlocks, master switches, and remove start switch keys. 10. NEVER LEAVE WHEN MACHINE IS RUNNING.
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Safety for Drill Presses 1. EYE/FACE/HAND PROTECTION. A face shield used with safety glasses is recommended. Always keep hands and fingers away from the drill bit. Never hold a workpiece by hand while drilling! DO NOT wear gloves when operating the drill. 8. Turn the machine OFF and clear chips and scrap pieces with a brush. Shut power OFF, remove drill bit, and clean table before leaving the machine. 2. SECURING BIT. Properly tighten and securely lock the drill bit in the chuck. 3. CORRECT BIT.
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SECTION 2: CIRCUIT REQUIREMENTS 110/220V Operation Serious personal injury could occur if you connect the machine to the power source before you have completed the set up process. DO NOT connect the machine to the power source until instructed to do so. Amperage Draw The Model G7947/G7948 motor is prewired to 110V, but can be rewired to 220V. The machine draws the following amps under load: NOTICE The Model G7947/G7948 is prewired for 110V operation. For 220V operation, you must rewire your motor.
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Grounding In the event of an electrical short, grounding reduces the risk of electric shock. The grounding wire in the power cord must be properly connected to the grounding prong on the plug; likewise, the outlet must be properly installed and grounded. All electrical connections must be made in accordance with local codes and ordinances. Electrocution or fire could result if this machine is not grounded correctly or if your electrical configuration does not comply with local and state codes.
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SECTION 3: SET UP Set Up Safety This machine presents serious injury hazards to untrained users. Read through this entire manual to become familiar with the controls and operations before starting the machine! Wear safety glasses during the entire set up process! The Model G7947/G7948 is a heavy machine. DO NOT over-exert yourself while unpacking or moving your machine—get assistance.
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Inventory 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. Use Figure 4 and the inventory list below to inventory your drill press parts: Description Qty 1. Base ........................................................... 1 2. Column ....................................................... 1 3. Table Support Assembly ............................ 1 4. Large Lock Lever ..............
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Hardware Recognition Chart -16- G7947/G7948 12 Speed Floor Drill Press
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Clean Up The unpainted surfaces are coated with a waxy oil to protect them from corrosion during shipment. Remove this protective coating with a solvent cleaner or citrus-based degreaser such as Grizzly’s G7895 Degreaser. To clean thoroughly, some parts may need to be removed. For optimum performance from your machine, make sure you clean all moving parts or sliding contact surfaces that are coated.
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Column and Base Table Support Components and Hardware Needed: Qty Base ...................................................................1 Column ...............................................................1 Hex Bolts M12-1.75 x 45 .....................................4 Components and Hardware Needed: Qty Table Support Assembly ................................... 1 Pinion................................................................. 1 Crank Handle ..................................................
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2. Mark the top of the rack, as shown in Figure 8, to keep track of which end is up. Column Ring Marking Location Rack Figure 8. Marking top of rack to show which end is up. 3. 4. Remove the column ring by loosening the setscrew, and remove the rack. Place the rack inside of the table support assembly, mesh it together with the pinion, and slide the table support/rack assembly over the column, as shown in Figure 9. Figure 10. Correct column ring orientation. 6.
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Headstock 5. Tilt the entire assembly up (see Figure 12) and carefully position the drill press on its base in the fully upright position. Components and Hardware Needed: Qty Headstock ..........................................................1 The headstock must be mounted on the column/base assembly before the drill press can be operated. Moving and installing the headstock is a two-person job, at the very least.
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6. Suspend a plum bob from the center of the headstock spindle so it is over the tape/ruler as shown in Figure 13. Drill Chuck & Arbor 7. Center the headstock directly over the base as indicated by the plum bob and ruler. The drill chuck attaches to the spindle by means of the arbor, shown in Figure 15. Matched tapers on the arbor and the inside of the chuck create a semipermanent assembly when properly joined. Chuck Key Arbor Drill Chuck Figure 13. Aligning headstock with base. 8.
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Downfeed Handles & Belt Cover Knob Tang-Side Up Components and Hardware Needed: Qty Downfeed Handles .............................................3 The downfeed handles must be installed to properly operate the drill press. To install the downfeed handles: 1. Thread the handles into the spindle hub, as shown in Figure 18, and tighten. 2. Remove the screw that fastens the belt cover in place and install the belt cover knob in its place (see Figure 18 for location). Figure 16. Seating arbor into chuck.
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Table Light (110V Only) Components and Hardware Needed: Qty Table ...................................................................1 Components and Hardware Needed: Qty 60 W Light Bulb ..................................................1 The table must be installed to properly support the workpiece during operation. To install the table: The Model G7947/G7948 includes a light socket, intended for 110V usage only.
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Test Run Floor Mounting Once assembly is complete, you are ready to test run the drill press. Once you have confirmed that your machine is running properly, we strongly recommend mounting it to the floor to ensure optimum stability. Wear safety glasses whenever starting or using machine. Failure to comply may result in serious personal injury. Lag shield anchors with lag bolts and anchor studs (Figure 22) are two popular methods for anchoring an object to a concrete floor.
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Drill presses are top-heavy and must be securely attached to a large-footprint base plate when used with a mobile base. Failure to use a base plate greatly increases possibility of tipping and personal injury. 7. Place the drill press on the base plate. 8. Position the drill press close to the front of the mobile base, so the mobile base will not be a tripping hazard. 9.
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SECTION 4: OPERATIONS Operation Safety Wear safety glasses when operating this machine. Serious injury may occur if this warning is ignored! Loose hair and clothing could get caught in machinery and cause serious personal injury. Keep loose clothing and long hair away from moving machinery. Installing/Removing Drill Bits Any drill bit you install in the chuck must be tight enough that it will not come loose during operation. To install a drill bit: 1. UNPLUG THE DRILL PRESS! 2.
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Choosing Speeds Using the Drill Bit Speed Chart Lubrication Suggestions The chart shown in Figure 25 is intended as a guide only. Always follow the manufacturer's speed recommendations if provided with your drill bits, cutters, or hole saws. Exceeding the recommended speeds may be dangerous to the operator. Wood ...........................................................None Plastics ........................................... Soapy Water Brass ..............................
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Changing Speeds 4. The belts in the head of the drill press must be rearranged to change speeds. A chart under the belt cover shows the belt positions needed to make the drill press run at the desired speed. Locate the desired speed on the speed chart under the belt cover and move the V-belts to the desired V-grooves on the motor, idler, and spindle pulleys. For Example: As indicated in the speed chart for 670 RPM (Figure 28), a belt combination of A-1.2-2 creates 670 RPM.
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Drilling SOFT MATERIAL: The softer the material, the faster the spindle may turn. (Plastics can melt at too high of a spindle speed!) 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. LUBRICANT: Use some form of lubricant on all materials except wood.
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Depth Stop Adjusting Table The Model G7947/G7948 has a depth stop that allows you to drill repeated non-through holes to the same depth every time. The table can raised/lowered, rotated, and tilted 90° left or right. Table adjustment controls are shown in Figure 30. The depth stop consists of a stud attached to the quill with two hex nuts that can be lowered or raised on the stud so the lower nut (depth nut) hits a stop bracket when the drill bit is lowered.
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Arbor Removal 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. Usually, once the chuck and arbor have been properly mounted together, they are considered semi-permanent connections. (If you would like to install a different chuck, we recommend getting a new arbor for that chuck.) 7.
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SECTION 5: ACCESSORIES G2500—20-PC Regular Sanding Drum Set Use on your drill press, lathe, or hand drill. This kit consists of 5 drums in popular 1⁄2" x 1⁄2", 3⁄4" x 1", 1"x 1", 11⁄2" x 11⁄2", and 2" x 11⁄2" sizes. Comes with 50, 80 and 120 grit sizes for each drum. G8583— 5 ⁄ 8" Keyless Drill Chuck JT #3 Industrial grade keyless chucks are excellent for quick bit changes. Knurled grips and exceptional accuracy make these chucks an indispensable part of any shop.
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G7984—Face Shield H1298—Dust Sealed Safety Glasses H1300—UV Blocking, Clear Safety Glasses H2347—Uvex® Spitfire Safety Glasses H0736—Shop Fox® Safety Glasses Safety Glasses are essential to every shop. If you already have a pair, buy extras for visitors or employees. You can't be too careful when it comes to shop safety! H1300 G8865—Cobalt Alloy Drill Bits 13-PC.
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SECTION 6: MAINTENANCE Unpainted Cast Iron Always disconnect power to the machine before performing maintenance. Failure to do this may result in serious personal injury. General Regular periodic maintenance on your drill press will ensure optimum performance. Make a habit of inspecting your machine each time you use it. Check for the following conditions and repair or replace when necessary: • Loose mounting bolts. • Worn switch. • Worn or damaged cords and plugs. • Damaged V-belt.
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SECTION 7: SERVICE About Service This section is provided for your convenience—it is not a substitute for the Grizzly Service Department. If you need help troubleshooting, you need replacement parts, or you are unsure of how to perform the procedures in this section, then feel free to call our Technical Support at (570) 546-9663. Troubleshooting Motor & Electrical Symptom Possible Cause Possible Solution Machine does not start or a breaker trips. 1. Plug or receptacle is at fault or wired incorrectly.
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Symptom Possible Cause Possible Solution 1. Inspect, replace for stripped or damaged bolts/nuts, and re-tighten with thread locking fluid. 2. Replace/realign belts with a new 2. Belts are slapping belt cover. matched set, and retension belts (refer to Page 28). 3. Replace belts. 3. V-belt(s) is worn or is loose. 4. Replace/repair dented fan cover, and 4. Motor fan is rubbing on fan cover. replace loose or damaged fan. 5. Remove pulley, replace with key as 5. Pulley is loose.
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Drill Press Operations Symptom Possible Cause Possible Solution 1. Replace and/or adjust the belt. Drilling stops, but the motor still oper- 1. The belt is loose or worn. ates. 2. The pulley for the spindle shaft or the 2. To resecure the pulley, do these motor is slipping on the shaft. steps: a. UNPLUG THE DRILL PRESS. b. Remove the setscrew on the slipping pulley. c. Align the flats on the pulley shaft with the setscrew hole. d. Reinstall and tighten the setscrew. 3.
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Depth Stop Calibration Feed Shaft Spring Tension 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. The feed shaft return spring is adjusted at the factory; however, during the life of the drill press you may want to adjust the feed shaft return spring so the feed shaft return pressure suits your operating needs. To calibrate the depth stop: 1.
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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). 4. Put on heavy leather gloves to protect your hands from possible lacerations if the spring uncoils during the next step. 5. Pull the cover outward just enough to disengage the spring-cover lock slot from the locking lug. Note: It is important to keep a good grip during this step.
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Electrical Components Light Switch Power Switch Figure 44. Power and light switch assembly. Figure 46. Motor wiring inside junction box. Figure 45. Light socket with dust plug removed (for 110V operation only). Figure 47. Motor wiring diagram for 110/220V, located on inside cover of motor junction box.
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Wiring Diagram G7947/G7948 Wiring Diagram ��
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G7947 Stand/Table Breakdown �� -42- G7947/G7948 12 Speed Floor Drill Press
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G7947 Headstock Breakdown ��
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G7947 Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 1 2 3 4 5 6 6-1 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 29A 30 31 32 33 P7947001 PB27M P7947003 P7947004 P7947005 P7943006 P7943006-1 PSS01M P7947008 PN01M P7947010 PW13 P7947012 P7947013 P7947014 P7947015 P7947016 P7947017 P7947018 P7947019 PRP04M PSS01M P7947022 P7947023 PK07M P7947025 P7947026 P7947027 P7947028 PB01M P7947029A P7947030 P7947031 PR05M P7947033 BASE HEX BOLT M12-1.
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REF PART # DESCRIPTION REF PART # DESCRIPTION 62 63 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90A 91 92 93 PVA26 P7947063 P6202 PR02M P7947067 PW03M PS14M PS09M PW02M P7947072 P7947073 PVA29 P7947075 P7947076 P7947077 PR26M P6207 P7947080 P6207 PR37M P7947083 P7947084 P6206 P7947086 P7947087 P6206 P7947089 P7947090A P7943091 P7943092 P7947093 V-BELT A-26 4L260 CENTER SHAFT BALL BEARING 6202 EXT RETAINING RING 14MM CENTER PULLEY FLAT WASHER 6MM PHLP HD SCR M6-1 X 12 P
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G7948 Stand/Table Breakdown �� -46- G7947/G7948 12 Speed Floor Drill Press
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G7948 Headstock Breakdown ��
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G7948 Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 1 2 3 4 5 6 6.1 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 29A 30 31 32 33 P7948001 PB27M P7947003 P7947004 P7947005 P7943006 P7943006.1 PSS01M P7947008 PN01M P7947010 PW13 P7947012 P7947013 P7948014 P7948015 P7947016 P7947017 P7947018 P7947019 PRP04M PSS01M P7947022 P7947023 PK07M P7947025 P7947026 P7947027 P7947028 PB01M P7947029A PSS09M P7947031 PR05M P7947033 BASE HEX BOLT M12-1.
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REF PART # DESCRIPTION REF PART # DESCRIPTION 62 63 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90A 91 92 93 PVA29 P7947063 P6202 PR02M P7947067 PW03M PS14M PS09M PW02M P7947072 P7947073 PVA35 P7947075 P7947076 P7947077 PR26M P6207 P7947080 P6207 PR37M P7947083 P7947084 P6206 P7947086 P7947087 P6206 P7948089 P7948090A P7948091 P7947092 P7947093 V-BELT�A-29�4L290 CENTER SHAFT BALL BEARING 6202 EXT RETAINING RING 14MM CENTER PULLEY FLAT WASHER 6MM PHLP HD SCR M6-1 X 12 P
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WARRANTY AND RETURNS Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of maintenance.
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WARRANTY CARD Name _____________________________________________________________________________ Street _____________________________________________________________________________ City _______________________ State _________________________ Zip _____________________ Phone # ____________________ Email ________________________ Invoice # _________________ Model # ____________________ Order # _______________________ Serial # __________________ The following information is given on a voluntary basis.
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FOLD ALONG DOTTED LINE Place Stamp Here GRIZZLY INDUSTRIAL, INC. P.O.
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