Pedestal Grinder
Make: Baldor
Model: 332B
Serial Number: W0404
Ace: Needed (Makerhub@georgefox.edu).
Location: Welding Shop
Safety First
- Ensure that you are wearing the popper attire for grinding
- Sleeves rolled up
- Hoodie draw strings tucked in
- Safety glasses
- Face shield
- NO gloves (gloves = bye bye fingers)
- Always follow the general shop dress code (closed toed shoes, hair above collar, no dangles, etc.)
It is ABSOLUTELY CRITICAL that you do NOT have ANY DANGLING items when using this machine. It will eat them and the things they are attached to (i.e. you).
- When grinding always keep the material flat on the tool rest. If you do need to grind an edge that cannot be accessed while the tool is flat on the tool rest, use a hand grinder or get a shop supervisor to help you.
- Don't let your hands or fingers make contact with the spinning wheels.
- Don't use this tool to grind a small part.
- Parts can get very HOT while grinding so be patient and take short brakes between grinds.
- Never attempt to grind aluminum on a grinder setup for steel. This could cause a grinding wheel to explode.
- Never attempt to use a grinding wheel that has been cracked, chipped, or damaged.
Description
A pedestal grinder is a type of grinding machine used to drive abrasive wheels. This type of grinder is mounted on a pedestal, which may be bolted to the floor or may sit on rubber feet.
Here is an example of a grinder being used.
Documentation
Terminology
- Wheel Guard - The shroud around the wheel.
- Spark Guard - The adjustable metal slider located near the top of the wheel guard.
- Tool Rest - An adjustable piece of metal that serves several purposes. The rest helps prevents the workpiece from getting sucked into the wheel and also can be used to support the work.
Training
Operation
There is a grinding wheel captivated on both sides of the motor. The wheel is made up of abrasive material. As you press material up against the wheel small amounts of material get removed and begin to cut away the metal surface. The wheels spins at 3600 RPM so remember to always work on the lower portion of the wheel and never hold any parts so the edges can catch on the wheel. Never wear gloves while using rotating equipment.
Demonstration
You will need to demonstration how to safely grind a piece of scrap steel.
General Procedure
- Ensure that the pedestal grinder is stable
- Ensure that all the guards are in place before turning on
- Check to see if the tool rest is within 1/16" of the grind wheel. If you are unsure if it is within 1/16" of the wheel, adjust it as close to the wheel as you can.
- Make sure that the wheel turns freely before using
- Turning on the wheel, stand to the side of the machine and wait for it to come to full speed
- Bring work into contact with the grinding wheel slowly and smoothly, without bumping
- When grinding move back and forth across the face of the wheel. This prevents even wear on the wheel and prevents grooves from forming in your work piece
- Once done using, turn off the grinder and wait for it to come to a complete stop
Certification
Complete the Welding Shop - Pedestal Grinder Module at the link below to gain access to the Pedestal Grinder. The Maker Hub Canvas course pertains to all facilities and equipment contained in the Maker Hub; simply complete the quizzes for the facilities/equipment you wish to use in the Maker Hub. Please email makerhub@georgefox.edu if you have any questions.
Troubleshooting
Maintenance
General maintenance
The gaps between the wheel and grinding fixture rests should be no more than a 1/16" inch. As the wheel wears the technician will need to adjust the rests.
Specific Maintenance Tasks
| Maintenance Procedure | Frequency | Done By |
|---|---|---|
| True Wheel | Technician | As needed |