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MSD supplies concentric casing systems with wings in 10 confirmed Overburden Wing Bit configurations for 146–377 mm casing OD and listed 4–12 inch hammer types.
MSD supplies concentric casing systems with wings for overburden casing advancement. The confirmed range is identified by its Overburden Wing Bit configurations, keeping this product separate from the standard concentric fixed ring-bit system and from the slide block casing system.
The current table contains 10 configurations from 146 Overburden Wing Bit to 377 Overburden Wing Bit. Casing OD, maximum center-bit OD, casing-shoe ID, maximum reaming OD, and hammer type vary by row; if the casing wall thickness differs from the standard design, a special design is required.
| Schema | Model | Casing OD (mm) | Maximum OD of Center Bit (mm) | Casing Shoe ID (mm) | Maximum OD of Reaming (mm) | Hammer Type |
|---|---|---|---|---|---|---|
 | 146 Overburden Wing Bit | 146 | 123 | 115 | 156 | 4 inch |
| 168 Overburden Wing Bit | 168 | 146 | 136 | 184 | 5 inch | |
| 178 Overburden Wing Bit | 178 | 156 | 142 | 193 | 5 inch | |
| 183 Overburden Wing Bit | 183 | 160 | 146 | 198 | 5 inch | |
| 194 Overburden Wing Bit | 194 | 178 | 162 | 208 | 6 inch | |
| 219 Overburden Wing Bit | 219 | 203 | 180 | 234 | 6–7 inch | |
| 245 Overburden Wing Bit | 245 | 220 | 202 | 260 | 6–8 inch | |
| 273 Overburden Wing Bit | 273 | 251 | 237 | 300 | 8 inch | |
| 325 Overburden Wing Bit | 325 | 298 | 280 | 355 | 8–10 inch | |
| 377 Overburden Wing Bit | 377 | 350 | 330 | 407 | 10–12 inch |
Note: The dimensions above are standard design dimensions. Special design is required if the casing wall thickness differs.
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Read MoreA concentric casing system with wings is an overburden casing-advancement product identified by its wing-bit configuration. The confirmed MSD range pairs each listed Overburden Wing Bit model with specific casing, center-bit, casing-shoe, reaming, and hammer dimensions.
This page covers the wing-bit product entity. It is separate from the standard concentric casing system based on fixed ring-bit configurations and from the slide block casing system based on discrete blocks in guide slots.
Each listed configuration includes an Overburden Wing Bit model, casing OD, maximum center-bit OD, casing-shoe ID, maximum reaming OD, and hammer type. These dimensions define the configuration that must be checked as one complete row rather than as interchangeable individual values.
The current confirmed material identifies the wing-bit structure but does not establish the wing opening, retraction, or actuation sequence. Those operating details should be confirmed from the technical drawing or model-specific information before selection; they are not inferred here from a standard concentric or slide-block mechanism.
The current table lists 10 configurations from 146 Overburden Wing Bit to 377 Overburden Wing Bit. The corresponding casing ODs run from 146 to 377 mm, maximum center-bit ODs from 123 to 350 mm, casing-shoe IDs from 115 to 330 mm, and maximum reaming ODs from 156 to 407 mm.
Listed hammer types range from 4 inch to 10–12 inch, with several configurations showing a hammer-size range. These endpoints summarize the listed rows; they do not confirm every intermediate casing size or an unlisted combination.
This wing bit casing system is intended for evaluation in overburden casing-advancement work. Final suitability depends on the actual ground profile, required casing and hole dimensions, drilling depth and direction, casing specification, hammer, and drilling equipment; the current data does not support a universal ground-condition or performance claim.
Select one complete row by matching casing OD, maximum center-bit OD, casing-shoe ID, maximum reaming OD, and hammer type. The current table also states that a casing wall thickness different from the standard design requires a special design.
For a quotation, provide the required casing OD and wall thickness, casing-shoe ID, target reaming or finished-hole diameter, exact hammer model and size, drilling-rig details, casing length and connection, ground description, required cased depth, hole direction, and quantity.
For replacement orders, also provide the current wing bit model, product markings, measured dimensions, and clear photos or drawings of the wing-bit assembly, center bit, and casing shoe. MSD will use this information to check the listed configuration or determine whether a special design is required.
MSD is a China-based rock drilling tools manufacturer supplying casing systems and related drilling tools. MSD has 23 years of rock drilling tools manufacturing experience, exports to 40+ countries, and operates under ISO 9001 certified quality management.
For a concentric casing system with wings enquiry, the MSD team reviews the required casing dimensions, reaming diameter, casing shoe, hammer, equipment, and ground information before confirming a listed or special-design configuration.
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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