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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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O-Ring groove question Caution! Metalworking content! ;-)
The machinist called me over and asked me to help him design an o-ring
groove. We looked up a chart at http://www.parker.com/literature/ORD...g_Handbook.pdf and on page 89 of the above PDF, there's a chart: Design guide 4-2. It's clear that for nominal 1/4" (actual width .275 ± .006) the gland depth (dim. L) is .226-.229. But on the chart, it seems to indicate that the groove width, G, for a nominal 1/4 width, is .375-.380, which he thinks (and I tend to agree, but I'm not the machinist - I just draw the pretty pictures) is too wide and the o-ring would flop around or something. He thinks the groove width should come from the line above, and be .281-.286. Anyone got the definitive answer for that? Thanks 10E9 in advance! Rich |
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