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New Process Repairs Worn Bearing Surfaces
If you already own a metal working lathe and have oxyacetylene tanks and gauges, you'll be interested in a revolutionary metal coating system that allows you to build up worn shafts and other bearing surfaces in a matter of minutes.
Called the RotoTec Gun, it could be the single most important shop tool you've purchased for your farm shop in a long while. You can learn to operate it in half an hour and, for an investment of $339 in the RotoTek Gun Kit, can do high quality machining right in your own shop.
A key feature of the do-it-yourself process is that temperature of the piece being worked need never exceed 500?F, eliminating warping and distortion of the shaft. When returned to service, the RotoTec repaired portion will outlast the original part, says the manufacturer.
Here's how the 3 step process works:
1. Preparation: After cleaning, set up the part in the lathe. Undercut the worn bearing area, then thread the undercut section.
2. Spraying: After slight preheating, spray on a thin layer of Xuperbond bond coat powder. This is the key to reliability of the RotoTec process. No extra "fushion" step is required. Only negligible heat is transmitted to the part and no part need ever reach temperatures over 500?F.
3. Finishing: Without removing the part from the lathe, set the carbide cutting tool for standard machining. After one or two cleanup cuts and a finishing cut, the bearing area has a smooth, gleaming "new" surface and is ready to go back into service.
"With the RotoTec kit, you can make professional, long-lasting repairs on worn shafts, journals and bearings - repairs that may take several days to have done in a blacksmith shop," the manufacturer points out.
For more details, contact: FARM SHOW Followup, Eutectic-Castolin Institute, 40-40 172nd St., Flushing, N.Y. 11358 (ph. 212 358-4000).

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1977 - Volume #1, Issue #4