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| previous | roller cone bit - collezione «Ingegneria meccanica: Industria petrolifera» - Maria Cristina Basti | next |
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Ingegneria meccanica: Industria petrolifera
| English |
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| Noun phrase |
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| Countable |
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| A bit with cone-shaped steel devices called cones that turn as the bit rotates. Each cone has concentric rows of teeth that interfit with the rows of teeth in the adjacent cones. The teeth can be made of steel machined in the cone or tungsten carbide inserts cold-pressed into holes drilled in the cone. The cones are mounted on bearing shafts that are integral part of the body of the bit. |
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| Sh91 |
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| Roller cone bits may be rotated for 30 hours or more in abrasive mud and up to 300 hours under optimum conditions. |
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| Sh91 |
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| rock bit |
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| Petroleum Engineering |
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| bit |
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| cones, bearings, body |
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| scalpello a rulli |
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| 3 |
