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12 SPEED DRILL PRESS
MODEL G7947/G7948
INSTRUCTION MANUAL
G7947
G7948
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.
#TR7410 PRINTED IN CHINA
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Related Manuals for Grizzly G7947
Summary of Contents for Grizzly G7947
- Page 1 INSTRUCTION MANUAL G7947 G7948 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. #TR7410 PRINTED IN CHINA...
- Page 2 Some dust created by power sanding, sawing, grind- ing, 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. •...
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Page 3: Table Of Contents
INTRODUCTION ... 3 Foreword ... 3 Contact Info ... 3 G7947 Machine Data Sheet ... 4 G7948 Machine Data Sheet ... 6 Identification ... 8 SECTION 1: SAFETY... 9 Safety Instructions for Machinery ... 9 Safety for Drill Presses ... 11 SECTION 2: CIRCUIT REQUIREMENTS ... - Page 4 Troubleshooting ... 35 Depth Stop Calibration ... 38 Feed Shaft Spring Tension ... 38 Electrical Components ... 40 G7947/G7948 Wiring Diagram ... 41 G7947 Stand/Table Breakdown ... 42 G7947 Headstock Breakdown ... 43 G7947 Parts List ... 44 G7948 Stand/Table Breakdown ... 46 G7948 Headstock Breakdown ...
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Page 5: Introduction
G7947/G7948 as supplied when the manual was prepared. However, owing to Grizzly’s policy of continuous improvement, changes may be made at any time with no obligation on the part of Grizzly. For your convenience, we always keep current Grizzly manuals available on our website at www. -
Page 6: G7947 Machine Data Sheet
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 ... 270 lbs. Length/Width/Height ... 30 x 21 x 70 in. - Page 7 Table and Base are Cast Iron 1HP Motor 12 Speeds Huge 4-3/4" Spindle Travel 1/8" - 5/8" Chuck Cushioned Grip Quill Handles Model G7947 Specifications, while deemed accurate, are not guaranteed. G7947/G7948 12 Speed Floor Drill Press PAGE 2 OF 2...
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Page 8: G7948 Machine Data Sheet
Head Construction ...Cast Iron Base Construction ... Cast Iron Paint ... Epoxy Head Information Head Swivel ... 360 deg. Model G7948 Specifications, while deemed accurate, are not guaranteed. MACHINE DATA SHEET G7947/G7948 12 Speed Floor Drill Press PAGE 1 OF 2... - Page 9 Table and Base are Cast Iron 1/8" - 5/8" Chuck Huge 4-3/4" Spindle Travel 12 Speeds 1-1/2HP Motor MT #4 Spindle Taper Model G7948 Specifications, while deemed accurate, are not guaranteed. G7947/G7948 12 Speed Floor Drill Press PAGE 2 OF 2...
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Page 10: Identification
G7947/G7948 12 Speed Floor Drill Press... -
Page 11: Section 1: Safety
3. ALWAYS WEAR AN ANSI APPROVED RESPIRATOR WHEN MACHINERY THAT PRODUCES DUST. Wood dust is a carcinogen and can cause cancer and severe respiratory illnesses. G7947/G7948 12 Speed Floor Drill Press 4. ALWAYS USE HEARING PROTECTION WHEN MACHINERY. Machinery noise can cause permanent hearing damage. - Page 12 Make sure you know what type of wood dust you will be exposed to and always wear an approved respirator. G7947/G7948 12 Speed Floor Drill Press ADJUSTING KEYS DAMAGED PARTS...
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Page 13: Safety For Drill Presses
If normal safety precautions are overlooked or ignored, serious personal injury may occur. G7947/G7948 12 Speed Floor Drill Press DRILL OPERATION. Never start the drill press with the drill bit pressed against the workpiece. Feed the drill bit evenly into the workpiece. -
Page 14: Section 2: Circuit Requirements
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: G7947 at 110V ... 10 Amps G7947 at 220V ... -
Page 15: Grounding
If the plug will not fit the outlet, have the proper outlet installed by a qualified electrician. G7947/G7948 12 Speed Floor Drill Press Extension Cords 110V Operation We do not recommend the use of extension cords. -
Page 16: Section 3: Set Up
60W Light Bulb (110V operation only) ... 1 • Permanent Marker ... 1 Unpacking The Model G7947/G7948 was carefully packed when it left our warehouse. If you discover the machine is damaged after you have signed for delivery, please immediately call Customer Service at (570) 546-9663 for advice. -
Page 17: Inventory
Inventory G7947 G7948 G7948 G7947 Figure 4. G7947/G7948 box inventory. -15- G7947/G7948 12 Speed Floor Drill Press... -
Page 18: Hardware Recognition Chart
Hardware Recognition Chart -16- G7947/G7948 12 Speed Floor Drill Press... -
Page 19: Clean Up
Take precautions from this hazard by only using cleaning solvents in a well ventilated area. G7947/G7948 12 Speed Floor Drill Press Site Considerations Floor Load Refer to the Machine Data Sheet for weight and footprint speciifcations for your machine. Some residential floors may require additional reinforce- ment to support both the machine and operator. -
Page 20: Column And Base
To install the table support: Place the pinion in the table support, as shown in Figure 7, so the pinion and gear teeth mesh together. Figure 7. Pinion correctly installed in table G7947/G7948 12 Speed Floor Drill Press support. - Page 21 Also make sure the rack is seated firmly in the lower ring. G7947/G7948 12 Speed Floor Drill Press Figure 10. Correct column ring orientation. Install the crank lever over the pinion shaft, and tighten the setscrew in the crank handle against the flat part of the pinion shaft.
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Page 22: Headstock
We recommend sliding the column into the head- stock, then tilting the entire assembly fully upright, as described and shown in this section. -20- G7947/G7948 12 Speed Floor Drill Press... -
Page 23: Drill Chuck & Arbor
Tighten the two headstock setscrews to the column, as shown in Figure 14. Figure 14. Securing headstock to column. G7947/G7948 12 Speed Floor Drill Press 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 semi- permanent assembly when properly joined. -
Page 24: Downfeed Handles & Belt Cover Knob
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 18. Downfeed handles and belt cover G7947/G7948 12 Speed Floor Drill Press Belt Cover Knob knob installed. -
Page 25: Table
Light (110V Only) Components and Hardware Needed: 60 W Light Bulb ...1 The Model G7947/G7948 includes a light socket, intended for 110V usage only. When the drill press is shipped from the factory, a dust plug is installed in the light socket for protection. -
Page 26: Test Run
A common way for making the baseplate is described in this sub-section. Always use extreme care when moving the drill press around with the mobile base! G7947/G7948 12 Speed Floor Drill Press Mounting ⁄ " thick... -
Page 27: Recommended Adjustments
Note: Use 2 ⁄ " long hex bolts. G7947/G7948 12 Speed Floor Drill Press Place the drill press on the base plate. Position the drill press close to the front of the mobile base, so the mobile base will not be a tripping hazard. -
Page 28: Section 4: Operations
OMMEND that you read books, trade maga- zines, or get formal training before begin- ning any projects. Regardless of the con- tent in this section, Grizzly Industrial will not be held liable for accidents caused by lack of training. -26-... -
Page 29: Choosing Speeds
One-Piece Type T e n o n / P l u g C u t t e r s 3/8" – 1/2" 5/8" – 1" G7947/G7948 12 Speed Floor Drill Press Choosing Speeds Lubrication Suggestions Wood ...None Plastics ... Soapy Water Brass ... -
Page 30: Changing Speeds
Figure 28. Pulley combination for 670 RPM for example. BELT:B-2.1-1 BELT:D-4.2-2 Rotate the belt tension lever until the belts are tight. Tighten both lock knobs. Close the cover before plugging in the machine. G7947/G7948 12 Speed Floor Drill Press 3 RPM BELT:A-1.3-3 7 RPM BELT:D-4.3-3 2050 BELT:C-3.1-1... -
Page 31: Drilling
Drilling 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. -
Page 32: Depth Stop
Depth Nut Figure 29. Depth stop components. -30- G7947/G7948 12 Speed Floor Drill Press... -
Page 33: Arbor Removal
Figure 32. Using drift key to remove arbor. Figure 31. Inner and outer drift-key slots aligned. -31- G7947/G7948 12 Speed Floor Drill Press... -
Page 34: Section 5: Accessories
" Keyless Drill Chuck JT #3. 1 Qt. Gel ® 12 oz Spray ® T-9 12 oz Spray ® T-9 4 oz Spray ® Gun Treatment 12 oz Spray ® Gun Treatment 4.5 oz Spray ® G7947/G7948 12 Speed Floor Drill Press... - Page 35 Also compatible with safety glasses! Figure 38. Half-mask respirator and disposable cartridge filters. G7947/G7948 12 Speed Floor Drill Press G8865—Cobalt Alloy Drill Bits 13-PC. Set G8866—Steelex G8867—Steelex Cobalt Alloy bits will retain their edge sharpness longer than normal HSS bits, resulting in a signifi- cant saving of time and money in the workshop.
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Page 36: Section 6: Maintenance
Any other condition that could hamper the safe operation of this machine. Cleaning Cleaning the Model G7947/G7948 is relatively easy. 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 to remove it. -
Page 37: Section 7: Service
SECTION 7: 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 pro- cedures in this section, then feel free to call our Technical Support at (570) 546-9663. - Page 38 7. Chuck or cutter is at fault. 8. Motor bearings are at fault. 9. Spindle bearings at fault. G7947/G7948 12 Speed Floor Drill Press Possible Solution 1. Inspect, replace for stripped or dam- aged bolts/nuts, and re-tighten with thread locking fluid.
- Page 39 The quill has excessive deflection. Holes drilled at an angle. Drill bit wobbles, holes are oversized. G7947/G7948 12 Speed Floor Drill Press Possible Cause 1. The belt is loose or worn. 2. The pulley for the spindle shaft or the motor is slipping on the shaft.
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Page 40: Depth Stop Calibration
Figure 41. Depth stop assembly. -38- G7947/G7948 12 Speed Floor Drill Press... - Page 41 Put on heavy leather gloves to protect yours hands from possible lacera- tions when removing the cover. G7947/G7948 12 Speed Floor Drill Press Put on heavy leather gloves to protect your hands from possible lacerations if the spring uncoils during the next step.
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Page 42: Electrical Components
Figure 46. Motor wiring inside junction box. Figure 45. Light socket with dust plug removed Figure 47. Motor wiring diagram for 110/220V, (for 110V operation only). located on inside cover of motor junction box. -40- G7947/G7948 12 Speed Floor Drill Press... -
Page 43: G7947/G7948 Wiring Diagram
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Page 44: G7947 Stand/Table Breakdown
G7947 Stand/Table Breakdown �� �� �� �� �� �� ��� � � ��� �� � � ��� � � �� �� ��� � �� �� � ��� ��� � -42- G7947/G7948 12 Speed Floor Drill Press... -
Page 45: G7947 Headstock Breakdown
��� ��� ��� �� �� �� �� �� ��� ��� �� �� ����� ��� �� �� �� G7947/G7948 12 Speed Floor Drill Press �� ��� �� �� �� �� �� �� �� �� �� �� �� �� �� �� ���... -
Page 46: G7947 Parts List
P7947058-3 58-4 P7947058-4 58-5 P7947058-5 P7947059 PK23M PSS01M G7947/G7948 12 Speed Floor Drill Press DESCRIPTION KNOB BOLT M10-1.5 X 35 HEX BOLT M8-1.25 X 25 FLAT WASHER 8MM HEX NUT M8-1.25 HEX NUT M10-1.5 SPEC SET SCREW M10-1.5 X 30 HEX NUT M12 X 1.5... - Page 47 MUST maintain the original location and readability of the labels on the machine. If any label is removed or becomes unreadable, REPLACE that label before using the machine again. Contact Grizzly at (800) 523-4777 or www.grizzly.com to order new labels. G7947/G7948 12 Speed Floor Drill Press...
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Page 48: G7948 Stand/Table Breakdown
G7948 Stand/Table Breakdown �� �� �� �� �� �� ��� � � ��� �� � � ��� � � �� �� ��� � �� �� � ��� ��� � -46- G7947/G7948 12 Speed Floor Drill Press... -
Page 49: G7948 Headstock Breakdown
��� ��� ��� �� �� �� �� �� ��� ��� �� �� ����� ��� �� �� �� G7947/G7948 12 Speed Floor Drill Press �� ��� �� �� �� �� �� �� �� �� �� �� �� �� �� �� ���... -
Page 50: G7948 Parts List
P7947058.3 58.4 P7947058.4 58.5 P7948058.5 P7947059 PK23M PSS01M G7947/G7948 12 Speed Floor Drill Press DESCRIPTION KNOB BOLT M10-1.5 X 35 HEX BOLT M8-1.25 X 25 FLAT WASHER 8MM HEX NUT M8-1.25 HEX NUT M10-1.5 SPEC SET SCREW M10-1.5 X 30 HEX NUT M12 X 1.5... - Page 51 MUST maintain the original location and readability of the labels on the machine. If any label is removed or becomes unreadable, REPLACE that label before using the machine again. Contact Grizzly at (800) 523-4777 or www.grizzly.com to order new labels. G7947/G7948 12 Speed Floor Drill Press...
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Page 52: Warranty And Returns
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. -
Page 53: Warranty Card
Do you think your machine represents a good value? Would you recommend Grizzly Industrial to a friend? Would you allow us to use your name as a reference for Grizzly customers in your area? Note: We never use names more than 3 times. - Page 54 FOLD ALONG DOTTED LINE FOLD ALONG DOTTED LINE Send a Grizzly Catalog to a friend: GRIZZLY INDUSTRIAL, INC. P.O. BOX 2069 BELLINGHAM, WA 98227-2069 Name_______________________________ Street_______________________________ City______________State______Zip______ TAPE ALONG EDGES--PLEASE DO NOT STAPLE Place Stamp Here...
- Page 56 Buy Direct and Save with Grizzly Visit Our Website Today And Discover Why • SECURE ORDERING • ORDERS SHIPPED WITHIN 24 HOURS • E-MAIL RESPONSE WITHIN ONE HOUR Trusted, Proven and a Great Value! ®: Grizzly Is The Industry Leader! ®...