Roller Kelly Bushing is one of common wellhead tools.
It can be applied to rotary table from 17 1/2″ to 49 1/2″
It can be applied to rotary table from 17 1/2″ to 49 1/2″
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Kelly Size
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(mm)
Elevation
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(mm)
Bedplate Size
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Tapering
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|||
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in
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mm
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Top
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Lower
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Opposite Side
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Large End
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|
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3 1/2
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88.9
|
406
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356
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332
|
φ332
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1: 3
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4 1/4
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107.95
|
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5 1/4
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133.35
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Specification of Roller Kelly Bushing