Table of Contents
- About this Machine
- Using this Machine
- Tips and Tricks
About this Machine
This Belt Sander is a Central Machinery (Harbor Freight) Model 69033. This machine includes both a 1 by 30 inch belt and a 5 inch disc.
Which one should you use? Both can be used to sand wood, removing hardened glue, deburr metal, sharpen tools, or polish plastic or glass. A belt sander is best for removing a lot of material quickly while the disc sander is best for finishing surfaces.
It’s typically recommended that you use the belt sander for rough and fast jobs followed by the disc sander for a smoother finish.
- Keep the guards in place.
- Verify that the adjusting keys and wrenches are removed before operating.
- Never leave the tool running unattended.
- Do not wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry which may get caught in moving parts.
- Keep long hair up and away from the tool.
- Always wear safety glasses. Your prescription glasses do not count!!
- If your work piece is metal you must clean your work area of non-metal dust and debris. Sparks from the metal surface could ignite debris and cause a fire.
- Do not use this sander for wet/lubricated sanding.
- Feed work piece into the sanding surface against the direction of rotation of the sandpaper only. See the direction of rotation below,
How to Get Help
Ask a Manager if you have any questions.
Using this Machine
These sections describe the standard usage and common pitfalls.
This machine has a belt and a sander. Depending on which one you will be using you have a few options for setting them up. See the diagram below,
If you are going to use the Sanding Belt you will usually need to adjust the Belt Table. Follow the steps below to make adjustments. If you need to replace the sandpaper you can follow the steps below but be sure to verify with a Manager that everything is set up correctly before use.
If you are going to use the Sanding Disc you will usually need to adjust the Disc Table and the Miter Guide. Follow the steps below to make adjustments. If you need to replace the sand disc you can follow the steps below but be sure to verify with a Manager that everything is set up correctly before use.
Basically, you will need to adjust the table first then secure your work piece. DO NOT USE GLOVES!
- Loosen and remove the Table Lock Handle, the Toothed Washer, and remove the Belt Table from the Sander. Leave the Bolt inside the Frame in Place.
- Unthread the two screws holding the Lower Belt Guard in place and remove the Lower Belt Guard.
- Unthread and remove the Screw holding the Upper Belt Guard in place. Remove the Upper Belt Guard.
- Unthread and remove the Knob holding the Belt Cover in place.
- Remove the Belt Cover by pulling up on the Belt Cover so the Flanges come out of the base of the Sander.
- Turn the Tension Knob counterclockwise to loosen the belt tension.
- Slide the old Belt off and replace with a new Belt.
- Tighten the Tension Knob, turning clockwise.
- Replace the Guards, Belt Cover and the Belt Table. Proceed to Adjusting Belt Tracking.
Adjusting Belt Tracking:
- Remove the Guards, Belt Cover, and Belt Table.
- Plug the unit in and momentarily turn it on and off. CAUTION: Stand to the side of the belt. Only turn unit on momentarily.
- Unplug the Power Cord and wait for the unit to come to a complete stop.
- Check to see if the Belt is centered on all three wheels.
- If the Belt needs adjustment, turn the Adjusting Bolt counterclockwise if the belt is left of center, and clockwise if the Belt is right of center. NOTE: Make the adjustments in small increments, then test again.
- Repeat steps 2-5 until the belt is centered on all three wheels.
- Replace the Guards, Belt Cover, and Belt Table.
Installing/Adjusting the Belt Table:
The Belt Table is held in place with the Table Lock Handle and adjusted for level with the Set Screw at the back of the Table.
- To install the Table Lock Handle and Table,
- First slide the Bolt from the inside to the outside of the Frame, then slide the Washer onto the Bolt end.
- Position the Table in place then thread the Locking Nut onto the Bolt as far as it will go. NOTE Hold the Table at the desired position while tighening the Locking Nut.
- Slide the Handle onto the Locking Nut and secure in place with the Spring and Screw.
- To adjust the Belt Table for use,
- First loosen the Handle by pulling it out and repositioning it so yuou can slide the Belt Table forward or backward until it is 1/16’’ from the Sanding Belt, but not touching the Sanding Belt.
- Use a Combination square to set the table at 90 degrees.
- Lock into position by tightening the Table Lock Handle.
- Turn the Set Screw until it touches the Sander Frame.
- To tilt the Belt Table for bevel sanding. Loosen the Table Lock Handle and tilt the Belt Table forward then tighten the Table Lock Handle.
- The Backstop supports the Sanding Belt for sanding flat surfaces. It is held in place on the Frame with two screws through the opening in the Belt Table. To sand curved surfaces, remove the Backstop, or back it away from the Sanding Belt.
Disc Table Assembly/Removal:
- To remove the Disc Table Assembly:
- Unthread and remove the Handles on both sides of the Disc Table.
- Lower the Table and slide it away from the Sanding Disc and remove it from the Sander.
- To install the Disc Table Assembly:
- Align the pins in the Disc Table with the slots on the Disc Guard.
- Slide the Disc Table Pins up and in and attach in place with the Handle Assemblies.
- Check that the Disc Table is 1/16” or less from the Sanding Disc. To adjust:
- Loosen the Adjustment Screws on the Disc Guard.
- Slide the Disc Guard / Disc Table assembly to the desired distance from the Sanding Disc.
- Tighten in place.
Dust Chute Removal:
- Unthread and remove the four Screws holding the Dust Chute in place and remove the Dust Chute, Screws and Washers.
- When reinstalling the Dust Chute, position the opening facing the back of the unit, as shown at right.
Installing Sanding Disc:
- Remove the Disc Table Assembly and the Dust Chute as described above.
- Pull off the old Sanding Disc by peeling it from the Disc Plate.
- Clean any saw dust or debris from around the Disc Plate.
- Press a new PSA Sanding Disc onto the Disc Plate.5. Replace the Disc Table Assembly and the Dust Chute.
- Loosen the Disc Guard adjustment bolts, adjust the Guard so the table is 1/16” away from the Sanding Disc, then tighten the Disc Guard Adjustment Bolts.
- Tighten all handles and screws.
Adjusting the Disc Table Angle:
- To set the Disc Sander for a 90°:
- Loosen the Handles on both sides of the Disc Table.
- Use a Combination square to set the table at 90°.
- Lock into position by tightening the Handles.
- To tilt the Disc Table for bevel sanding (0° - 45°):
- Loosen the Handles on both sides of the Disc Table.
- Tilt the Table to the desired angle.
- Lock into position by tightening the Handles.
Adjusting the Miter Guide:
- Loosen the Knob on the Miter Guide and rotate the Gauge to the desired angle. The Miter Guide can be set from 0° to 45°.
- Tighten the Knob in place.
- Place the Miter Guide in the groove on the Disc Table, facing either direction as needed for the project.
Once you have made your adjustments you will need to secure your work piece as best as you can. Remember to NOT WEAR GLOVES.
- Verify that there are no foreign objects or cords near the belt or disc!
- Check that the ON/OFF Switch is off, then plug the Power Cord into a grounded outlet.
- Turn the ON/OFF Switch ON.
- Wait for the sanding surfaces to come up to full speed.
- Holding the workpiece firmly on the table surface, slide the workpiece into contact with the sanding surface by applying light pressure against the sanding surface. NOTE: Only contact the downward side of the rotating sanding disc. Bringing the workpiece in contact with the upward rotation of the disc may cause the workpiece to fly up or kickback which may result in injury.
- Once you are done turn off the tool and disconnect its power supply after use.
Disc Sanding Tips
- Always use the Sander on the downward rotating half of the Sanding Disc.
- Use the Sanding Disc for sanding the ends of small and narrow workpieces and outside curved edges.
- Contact the sanding surface with light pressure, keeping aware of what part of the disc you are contacting. The outer edge of the disc moves faster and removes more material than the area of the Sanding Disc closer to the center of the Disc.
Belt Sanding Tips
- Use the Belt Sanding surface to sand wood, deburr metal, or polish plastic or glass.
- When sanding flat surfaces, keep the Backstop installed so the workpiece contacts a straight flat sanding surface.
- When sanding curved surfaces, remove the backstop or back it off, so the Belt will have some give, and will better contact the curved edges of the workpiece.
- When sharpening a metal tool:
- Keep the Backstop in place for a firm sanding surface.
- Adjust the Belt Table to the desired angle of the Tool.
- Hold the tool firmly on the Belt Table top and slide the tool toward the sanding surface making light contact until the bevel is sharpened.
Be sure to turn off the tool and disconnect its power supply after use.
After use, wipe the external surfaces of the tool with a clean cloth. Clean up your workstation before leaving!
Tips and Tricks
|Problem||Possible Causes||Likely Solutions|
|Tool will not start.||1. Cord not connected.
2. No power at outlet.
3. Tool’s thermal reset breaker tripped (if equipped).
4. Internal damage or wear. (Carbon brushes or switch, for example.)
|1. Check that cord is plugged in.
2. Check power at outlet. If outlet is unpowered, turn off tool and check circuit breaker. If breaker is tripped, make sure circuit is right capacity for tool and circuit has no other loads.
3. Turn off tool and allow to cool. Press reset button on tool.
4. Have a Manager service the tool.
|Tool operates slowly.||Extension cord too long or wire size too small.||Eliminate use of extension cord.|
|Performance decreases over time.||1. Accessory dull or damaged.
2. Carbon brushes worn or damaged.
|1. Replace Sanding Belt and/or Sanding Disc as needed.
2. Have a Manager replace brushes.
|Excessive noise or rattling.||Internal damage or wear. (Carbon brushes or bearings, for example.||Have a Manager service the tool.|
|Overheating.||1. Forcing machine to work too fast.
2. Table misaligned.
3. Accessory dull or damaged.
4. Blocked motor housing vents.
5. Motor being strained by long or small diameter extension cord.
|1. Allow machine to work at its own rate.
2. Check and correct table alignment.
3. Replace Sanding Belt and/or Sanding Disc as needed.
4. Wear ANSI-approved safety goggles and NIOSH‑approved dust mask/respirator while blowing dust out of motor using compressed air.
5. Eliminate use of extension cord.