Grizzly G7947 - User Manual

Other manuals for Grizzly G7947

Instruction Manual56 pages

Parts Manual4 pages

Manual9 pages

Questions and Answers

K
Kelly Lopez MDSep 15, 2025
What to do if the spindle does not retract completely in the uppermost position or it binds on my Grizzly Drill?
- C
  Colleen WeissSep 15, 2025
  If the spindle on your Grizzly Drill doesn't fully retract or binds, the quill shaft might be gummy with sawdust and oil. Clean the gummy substance with penetrating oil and lubricate with a light coat of oil. Another possibility is that the feed shaft return spring is weak. Finally, the quill deflection screw could be binding the quill. Loosen the jam nut, and slightly turn out the screw where the quill binds. Retighten the jam nut and recheck for binding and looseness at all spindle locations.
C
Cameron TuckerSep 16, 2025
Why does the quill have excessive deflection on my Grizzly Drill?
- A
  Angelica WhiteSep 17, 2025
  If the quill on your Grizzly Drill has excessive deflection, it could be due to a fault in the quill shaft, so adjust the quill screw. Alternatively, the quill and/or bearings might be worn, requiring replacement.
D
Dwayne DuncanSep 18, 2025
Why are holes drilled at an angle with my Grizzly Drill?
- L
  linda09Sep 18, 2025
  If holes are drilled at an angle with your Grizzly Drill, the table might not be at 90 degrees.
C
Carl ReedNov 20, 2025
Why is my Grizzly G7947 Drill stalling or underpowered?
- D
  David VanceNov 20, 2025
  If your Grizzly Drill machine stalls or is underpowered, consider the following potential causes: * The cutter or bit might be incorrect or dull for the task. Use the correct cutter or bit. * The feed rate or cutting speed might be too fast. Decrease the feed rate or cutting speed. * The belts might be slipping. Ensure belts are oil-free, properly tensioned, and replace if necessary. Also, make sure the pulleys are aligned. * The machine might be undersized for the task. Try performing the operation with a different machine. * The motor might be overheated. Clean the motor, let it cool down, and reduce the workload. Other possible issues include a pulley slipping on the shaft, a faulty centrifugal switch, or a motor fault. Address these components as needed by tightening loose ...
C
Carrie OlsenNov 23, 2025
Why does my Grizzly Drill machine not start?
- J
  Jason ButlerNov 23, 2025
  If your Grizzly Drill machine does not start or a breaker trips, here's what might be happening: * The disabling key might be removed or faulty. Ensure it's inserted correctly or replace it if needed. * The power supply voltage or circuit size may be incorrect. Verify you have the correct voltage and circuit size. * The power supply circuit breaker might have tripped, or a fuse blown. Make sure the circuit is properly sized and free of shorts. Reset the circuit breaker or replace the fuse. * Motor wires could be connected incorrectly. Correct the motor wiring connections. * There might be broken, disconnected, or corroded wires. Check and fix any wiring issues. Additional possible causes include a faulty start capacitor, a faulty centrifugal switch, or a motor fault. Test and r...
S
samantha97Nov 25, 2025
How to fix vibration or noisy operation of Grizzly G7947 Drill?
- D
  Darrell DouglasNov 25, 2025
  If your Grizzly Drill has vibration or noisy operation, several factors could be responsible: * A motor or other drive component might be loose. Inspect and replace any damaged bolts or nuts, and retighten them, using thread-locking fluid if necessary. * V-belts could be worn or loose. Inspect and replace belts with a new matched set. * The motor fan might be rubbing on the fan cover. Fix or replace the fan cover, and replace any loose or damaged fan. * A pulley might be loose. Re-align or replace the shaft, pulley set screw, and key. * The motor mount could be loose or broken. Tighten or replace it. Other potential causes include faulty motor or spindle bearings, or an unbalanced chuck or dull cutter. Test the bearings by rotating the shaft; rotational grinding or a loose shaf...

Summary

Contact Information

Manual Accuracy and Updates

Machine Description and Differences

Component Identification

Right-Side Controls

Identifies controls located on the right side of the drill press.

Left-Side Controls

Identifies controls located on the left side of the drill press.

Controls and Components Overview

Headstock Controls (Right)

Details the controls on the right side of the headstock.

Headstock Controls (Left)

Details the controls on the left side of the headstock.

G7947 Machine Specifications

G7947 Main Specifications

Operation Information

Details operational specifications for the drill press.

Spindle Information

Covers specifications related to the spindle assembly.

Table Information

Outlines the specifications for the drill press table.

G7948 Machine Specifications

G7948 Main Specifications

Operation Information

Details operational specifications for the G7948 drill press.

Spindle Information

Covers specifications related to the G7948 spindle assembly.

Table Information

Outlines the specifications for the G7948 drill press table.

Section 1: Safety Instructions and Warnings

General Machinery Safety

Provides essential safety instructions for operating machinery.

Drill Press Specific Safety Precautions

Preventing Entanglement and Injury

Addresses risks of entanglement and hand injuries during operation.

Workpiece and Tooling Safety

Covers secure workpiece handling and tool inspection for safety.

Section 2: Power Supply Requirements

Power Supply Availability and Circuit Info

Discusses power supply availability and circuit requirements.

120 V Circuit Requirements

Details the circuit requirements for 120V operation.

240 V Circuit Requirements

Details the circuit requirements for 240V operation.

Grounding and Extension Cord Usage

Grounding Requirements

Explains essential grounding procedures for safe operation.

Extension Cord Usage Guidelines

Provides recommendations and requirements for using extension cords.

Converting Voltage to 240 V

Section 3: Setup and Unpacking Procedures

Items Needed for Setup

Lists tools and items required for machine setup.

Machine Unpacking Instructions

Guides the user through the unpacking process.

Setup Inventory and Parts Check

Shipped Items Inventory

Lists all items shipped with the machine for inventory.

Cleanup Procedures

Site Considerations for Machine Placement

Weight Load and Space Allocation

Addresses weight capacity and space needed for operation.

Physical Environment and Electrical Installation

Covers optimal physical environment and electrical setup.

Anchoring and Mobile Base Mounting

Anchoring Machinery to the Floor

Explains methods for securing the machine to the floor.

Mounting to a Mobile Base

Details how to mount the drill press on a mobile base.

Machine Assembly Guide

Securing Column and Installing Pinion

Details securing the column to the base and installing the pinion.

Machine Assembly Guide (Continued)

Assembling Table Support and Headstock

Covers installation of table support, column ring, and levers.

Mounting the Headstock Assembly

Guides the safe mounting of the heavy headstock.

Machine Assembly Guide (Continued)

Positioning and Securing Headstock to Column

Details the process of aligning and securing the headstock.

Machine Assembly Guide (Continued)

Installing Chuck Guard and Table

Covers installation of the chuck guard, handles, and table.

Light Bulb Installation (120 V)

Instructions for installing a light bulb for 120V operation.

Joining Drill Chuck and Arbor

Machine Test Run Procedure

Section 4: Operations Overview and Safety

Typical Operation Overview

Provides a general understanding of machine operation steps.

Calculating Spindle Speed for Drilling

Drill Bit Speed Chart

Provides recommended spindle speeds for various drill bits and materials.

Changing Spindle Speeds

Drilling Operation Guidelines

Drilling Safety and Material Considerations

Covers safety, workpiece, and material handling during drilling.

Bit and Cutter Specifics

Discusses specific types of bits and cutters for drilling.

Installing and Removing Drill Bits

Setting the Depth Stop

Positioning the Drill Press Table

Adjusting Table Height

Instructions for adjusting the table's vertical position.

Adjusting Table Rotation

Instructions for rotating the table horizontally.

Adjusting Table Tilt

Instructions for tilting the table to desired angles.

Removing the Arbor

Section 5: Recommended Accessories

Drill Press Vise and Sanding Drums

Describes the 6" drill press vise and sanding drum set.

Protective Lubricants and Treatments

Lists recommended products for protecting metal surfaces.

Safety Accessories and Drill Bits

Basic Eye and Respiratory Protection

Lists safety glasses, face shields, and respirators.

Cobalt Alloy Drill Bits

Details the benefits of Cobalt Alloy drill bits.

Drill Press Tables and Hearing Protection

Drill Press Table Attachment

Describes an optional drill press table attachment.

Hearing Protection Options

Lists various types of earmuffs and earplugs.

Specialized Attachments and Sharpening

Mortising Attachment and Drill Bit Sharpening

Covers mortising attachment and drill bit sharpening machine.

Step Drill Sets and Anti-Fatigue Mats

Details step drill sets and anti-fatigue floor mats.

Section 6: Maintenance Overview

General Maintenance and Checks

Outlines general maintenance practices and checks.

Cleaning and Protecting Surfaces

Provides instructions for cleaning and protecting the machine.

Lubrication Guidelines

Details lubrication requirements for machine components.

V-Belt Inspection and Care

Covers inspection and care of the V-belts.

Section 7: Service and Troubleshooting

Motor and Electrical Troubleshooting

Addresses issues related to the motor and electrical systems.

Drill Press Operations Troubleshooting

Spindle and Workpiece Vibration Issues

Troubleshoots issues with spindle power, vibration, and surface finish.

Spindle Overheating and Depth Stop Issues

Addresses spindle overheating and depth stop calibration problems.

Service Procedures

Calibrating the Depth Stop

Explains how to calibrate the depth stop scale.

Tensioning the Spindle Return Spring

Details how to adjust the spindle return spring tension.

Section 8: Wiring Safety and Instructions

Wiring Safety Instructions

Provides critical safety guidelines for electrical wiring tasks.

Wiring Connections and Requirements

Covers wire connections, component damage, and circuit requirements.

Electrical Components Overview

Power and Light Switch Assembly

Details the power and light switch assembly.

Light Socket and Motor Wiring

Explains the light socket and motor junction box wiring.

G7947;G7948 Wiring Diagram

Section 9: Parts Breakdown and Information

G7947 Stand and Table Breakdown

Illustrated breakdown of the G7947 stand and table components.

G7947 Headstock Breakdown

G7947 Parts List

G7948 Parts Breakdown

G7948 Stand and Table Breakdown

Illustrated breakdown of the G7948 stand and table components.

G7948 Headstock Breakdown

G7948 Parts List

Labels and Cosmetics

Machine ID and Warning Labels

Details the machine ID, shock, pinch, and electricity warning labels.

Accessory and Safety Labels

Covers light bulb notice, touch-up paint, and entanglement labels.

Warranty and Returns Information

Grizzly G7947 Specifications

General

Brand	Grizzly
Model	G7947
Category	Drill
Language	English

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Grizzly G7947 - User Manual

Table of Contents

Other manuals for Grizzly G7947

Questions and Answers

Summary

Contact Information

Manual Accuracy and Updates

Machine Description and Differences

Component Identification

Right-Side Controls

Left-Side Controls

Controls and Components Overview

Headstock Controls (Right)

Headstock Controls (Left)

G7947 Machine Specifications

G7947 Main Specifications

Operation Information

Spindle Information

Table Information

G7948 Machine Specifications

G7948 Main Specifications

Operation Information

Spindle Information

Table Information

Section 1: Safety Instructions and Warnings

General Machinery Safety

Drill Press Specific Safety Precautions

Preventing Entanglement and Injury

Workpiece and Tooling Safety

Section 2: Power Supply Requirements

Power Supply Availability and Circuit Info

120 V Circuit Requirements

240 V Circuit Requirements

Grounding and Extension Cord Usage

Grounding Requirements

Extension Cord Usage Guidelines

Converting Voltage to 240 V

Section 3: Setup and Unpacking Procedures

Items Needed for Setup

Machine Unpacking Instructions

Setup Inventory and Parts Check

Shipped Items Inventory

Cleanup Procedures

Site Considerations for Machine Placement

Weight Load and Space Allocation

Physical Environment and Electrical Installation

Anchoring and Mobile Base Mounting

Anchoring Machinery to the Floor

Mounting to a Mobile Base

Machine Assembly Guide

Securing Column and Installing Pinion

Machine Assembly Guide (Continued)

Assembling Table Support and Headstock

Mounting the Headstock Assembly

Machine Assembly Guide (Continued)

Positioning and Securing Headstock to Column

Machine Assembly Guide (Continued)

Installing Chuck Guard and Table

Light Bulb Installation (120 V)

Joining Drill Chuck and Arbor

Machine Test Run Procedure

Section 4: Operations Overview and Safety

Typical Operation Overview

Calculating Spindle Speed for Drilling

Drill Bit Speed Chart

Changing Spindle Speeds

Drilling Operation Guidelines

Drilling Safety and Material Considerations

Bit and Cutter Specifics

Installing and Removing Drill Bits

Setting the Depth Stop

Positioning the Drill Press Table

Adjusting Table Height

Adjusting Table Rotation

Adjusting Table Tilt

Removing the Arbor

Section 5: Recommended Accessories

Drill Press Vise and Sanding Drums

Protective Lubricants and Treatments

Safety Accessories and Drill Bits