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MSD supplies rotary stabilizers with published hole size, length, ID, fishing neck diameter, and connection options for rotary drill-string matching and technical confirmation.
MSD rotary stabilizers are listed by hole size, length, ID, fishing neck diameter, and connection. Review these published fields together to identify the configuration that should be checked against the mating components and requirements of the rotary drill string.
| Hole Size | Length | ID | Fishing Neck Dia. | Connection |
|---|---|---|---|---|
| 5-3/4"–6-1/4" | 2.00 m / 78" | 2" | 4-3/4" | NC38 |
| 8-1/2" | 2.20 m / 86" | 2-1/4" | 6-3/4" | 4-1/2 IF |
| 10-5/8" | 2.40 m / 94" | 2-13/16" | 8-1/4" | 6-5/8 Reg |
| 12-1/4" | 2.40 m / 94" | 2-13/16" | 8-1/4" | 6-5/8 Reg |
| 12-1/4" | 2.40 m / 94" | 3" | 9-1/2" | 7-5/8 Reg |
| 14-1/2" | 2.40 m / 94" | 3" | 9-1/2" | 7-5/8 Reg |
| 16-1/2" | 2.50 m / 98" | 3" | 9-1/2" | 7-5/8 Reg |
| 17-1/2" | 2.60 m / 102" | 3" | 9-1/2" | 7-5/8 Reg |
| 18-1/8" | 2.60 m / 102" | 3" | 9-1/2" | 7-5/8 Reg |
| 26" | 3.30 m / 120" | 3" | 9-1/2" | 7-5/8 Reg |
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Read MoreMSD rotary stabilizers are rotary drill-string components presented on this page through confirmed dimensional and connection fields. The published specifications are intended for configuration review within a rotary drilling system; they do not establish a generic oilfield, BHA, or DTH stabilizer product range.
Rotary drill pipes, bit subs, shock absorbers, and tricone bits are separate components with their own specifications. Information about those adjoining components may be required for matching, but this page remains focused on selecting the rotary stabilizer configuration itself.
The current specification table lists hole size, length, ID, fishing neck diameter, and connection. These fields should be reviewed as one configuration. Hole size alone does not confirm that the remaining dimensions or connection are suitable for the required assembly.
Published connection options include NC38, 4-1/2 IF, 6-5/8 Reg, and 7-5/8 Reg for the corresponding listed configurations. The connection must be checked exactly against the mating component rather than inferred from hole size or from the general rotary stabilizer name.
Before selecting a rotary drill stabilizer, confirm its listed dimensions and connection against the existing drill-string arrangement, including the adjoining drill pipe, bit-side component, and other nearby rotary components. Rig information and the intended rotary drilling requirement should also be provided when they affect the assembly that must be matched.
For a mining or rotary blasthole requirement, the application identifies the operating context but does not determine the final stabilizer configuration. Technical confirmation should still be based on the published hole size, length, ID, fishing neck diameter, connection, and the actual mating components.
For a replacement rotary stabilizer, provide the existing product markings, hole size, overall length, ID, fishing neck diameter, connection, photographs, and drawings where available. Identifying the mating drill-string components helps distinguish configurations that may share a nominal size but differ in other listed fields.
For technical confirmation and quotation, provide the required configuration, published dimensional fields, connection, mating component information, rig and rotary drilling context, and quantity. A drawing, photograph, or sample reference should be included when the existing configuration cannot be identified from its markings alone.
Technical content reviewed by MSD Engineering Team. | MSD — 23+ years of rock drilling tools manufacturing expertise | ISO 9001 Certified | Exporting to 40+ countries
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