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Random Orbital Sanders
Sufficient air supply to portable sanding tools is crucial for proper finishing characteristics. If the air pressure is too low, random orbital disc sanders will be much more likely to create "swirl marks" or "fish hooks" on the workpiece.
As a woodworker, you play a crucial role in ensuring the proper functioning of your tools.
KLINGSPOR recommends the following guidelines for maintaining the air supply to your portable sanding tools:- Maintain steady operating air pressure of 90 P.S.I. under load. Remember, this is not the same as the air pressure on the tool when it is not in use. Use a gauge on the sander to determine actual P.S.I. under load.
- Most palm-style random orbital sanders require an air volume of 15 to 18 standard cubic feet per minute (SCFM).
- The compressor size should be 5 hp and have a two-stage design.
- If using rubber or plastic air hoses with an inside diameter of 3/8", a maximum length of 20 feet from the iron air supply pipe is suggested.
- Use larger I.D. hoses and couplings whenever possible. Standard hose inside diameters are typically 5/16", 3/8" and 1/2".
- Also, make sure the couplings' I.D. sizes are no more than one size smaller than the hose I.D. Be sure male and female couplings are of the same I.D.
- Remember, your tools are only as good as the care you give them. Always keep your air tools properly maintained, lubricated, and clean. Regularly check for worn bearings and backing pads, and keep mufflers and exhaust areas clean and unrestricted. Your tools will thank you for it.