Grizzly T25920 - User Manual

Questions and Answers

S
Susan StoneJul 26, 2025
Why Grizzly T25920 machine does not start?
- L
  lmarshJul 26, 2025
  If your Grizzly Lathe isn't starting, several factors could be at play. First, check if the switch disabling key is installed. Ensure that the power supply voltage and circuit size are correct. A blown fuse could also be the culprit, so replace it and check for shorts. If the power supply circuit breaker tripped, reset it after ensuring the circuit is correctly sized and free of shorts. Inspect wiring for breaks or corrosion, repairing or replacing as necessary. Other potential issues include a faulty potentiometer or ON/OFF switch (test/replace them), worn motor brushes (replace them), or a problem with the motor itself (test, repair, or replace).
F
fpriceJul 31, 2025
What to do if my Grizzly T25920 stalls or is underpowered?
- R
  Ryan NguyenJul 31, 2025
  If your Grizzly Lathe stalls or seems underpowered, consider these potential causes. Ensure you're using sharp lathe tools and reduce the feed rate or depth of cut if the machine is undersized for the task. Verify that the workpiece material is suitable (only wood with moisture below 20%). Decreasing the feed rate or cutting speed might also help. Other possible issues include a slipping belt (replace and re-tension), incorrect motor wiring (correct it), a slipping pulley on the shaft (replace it), a faulty plug or receptacle (test for good contacts), an overheated motor (clean and cool it), a faulty potentiometer (test or replace), worn motor brushes (replace), or a defective motor (test, repair, or replace).
P
pecktonyAug 4, 2025
How to fix vibration in Grizzly T25920 Lathe without workpiece?
- R
  robert51Aug 4, 2025
  To address vibration or noisy operation in your Grizzly Lathe when no workpiece is installed, first adjust the machine feet until it sits evenly without wobbling. Inspect for any loose motors or components, replacing stripped or damaged bolts/nuts and re-tightening with thread-locking fluid. Check the belt for wear or looseness, and replace if necessary. Ensure the motor mount is tightened or replaced if broken. If the pulley is loose, replace the shaft, pulley, setscrew, and key as required. Test the motor bearings by rotating the shaft; grinding or a loose shaft indicates bearing replacement is needed.
J
Jessica HerreraAug 8, 2025
Why do chisels grab or dig into the workpiece on my Grizzly T25920 Lathe?
- M
  Madison CarterAug 8, 2025
  Chisels grabbing or digging into the workpiece on your Grizzly Lathe can occur for several reasons. Ensure the tool rest isn't set too low or too far from the workpiece. Verify that you're using the correct chisel or tool for the job. Lastly, check if the chisel or tool is dull, and sharpen or replace it if needed.
T
Traci GrayAug 13, 2025
How to improve surface finish on Grizzly T25920 Lathe?
- D
  dstephensAug 13, 2025
  To improve the surface finish on your Grizzly Lathe workpiece, experiment with different spindle speeds to find a better setting. Also, ensure your chisel is sharp and appropriate for the operation; sharpen it or try a different chisel.
M
Mark CarterAug 17, 2025
What to do if Grizzly Lathe tailstock moves under load?
- J
  Jimmy WilsonAug 17, 2025
  If the tailstock of your Grizzly Lathe moves under load, first tighten the tailstock mounting bolt. If the issue persists, clean the bed surface to remove any excess oil or grease.
J
Jennifer WolfeAug 21, 2025
How to remove tapered tool from Grizzly Lathe tailstock barrel?
- J
  Jessica QuinnAug 22, 2025
  If you're having trouble removing a tapered tool from the tailstock barrel of your Grizzly Lathe, turn the barrel handwheel until it forces the taper out of the barrel. Always ensure that taper surfaces are clean before inserting them into the barrel.

Summary

Controls & Components

SECTION 1: SAFETY

Safety Symbols and General Machinery Safety

Explains safety symbols and provides general safety instructions for machinery.

Apparel, Dust, Hearing, and Safe Operation

Covers PPE, dust/noise hazards, and safe operating practices.

Additional Safety for Wood Lathes

Workpiece, Security, and Tool Safety

Details safe practices for workpiece handling, machine security, and tool usage.

SECTION 2: POWER SUPPLY

Power Supply Requirements and Current Rating

Discusses power supply circuit needs, voltage, and amperage for the machine.

Grounding, Plugs, and Extension Cords

SECTION 3: SETUP

Unpacking, Inventory, and Setup Requirements

Bench Mounting and Assembly

Test Run Procedure

Steps to perform a test run to verify machine operation and safety.

SECTION 4: OPERATIONS

Typical Operation Overview and Safety

Provides a general overview of lathe operations and associated safety measures.

Stock Inspection and Requirements

Details criteria for selecting and inspecting workpieces for safe turning.

Adjusting Spindle Speeds

Explains how to change belt positions for different speed ranges.

Adjusting Tailstock Position

Adjusting Tool Rest Position

Spindle Turning Setup and Tips

Details workpiece preparation for spindle turning and provides operational tips.

Faceplate Turning Setup

SECTION 6: MAINTENANCE

Maintenance Schedule, Cleaning, and Lubrication

SECTION 7: SERVICE

Troubleshooting Motor and Electrical Issues

Lists common motor/electrical symptoms and their possible causes and solutions.

Troubleshooting Wood Lathe Operation

Addresses common operational issues like vibration, tool grab, and surface finish.

Drive Belt and Fuse Replacement

Replacing Motor Brushes

SECTION 8: WIRING

Wiring Safety Instructions

Wiring Diagram

Grizzly T25920 Specifications

General

Swing Over Bed	10 inches
Distance Between Centers	36"
Spindle Speed	70-1400 RPM
Motor Power	2 HP
Weight	1467 lbs.
Spindle bore	0.79 inches
Number of speeds	Variable