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MSD supplies top hammer coupling sleeves and drill rod couplings for R25, R28, R32, R35, T38, T45 and T51 systems, including standard and crossover connections.
MSD manufactures top hammer coupling sleeves and drill rod couplings for connecting compatible threaded rods in rock drilling systems. The confirmed range covers R25, R28, R32, R35, T38, T45 and T51, including standard couplings and selected crossover thread connections. Length, outside diameter and thread combination vary by configuration.
For R25 and R28 products, inch values for length L were not listed in the supplied parameter sheets.
| Image | Type | Thread Connection | Length L (mm / in) | Diameter D (mm / in) |
|---|---|---|---|---|
 | Coupling | R25-R25 | 140 mm / Not listed | 34 mm / 1 11/32 in |
| Crossover Coupling | R25-R32 | 175 mm / Not listed | 45 mm / 1 3/4 in |
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Read MoreMSD drill rod coupling sleeves connect compatible threaded components in top hammer drilling systems. These drill rod couplings are used with extension rods in mining, quarrying, tunneling, and other rock-drilling applications.
The correct coupling sleeve must match the thread connection at both ends of the drilling string. Similar outside dimensions do not confirm thread compatibility.
Standard coupling sleeves connect matching thread systems, such as R32-R32, T38-T38, and T51-T51.
Crossover coupling sleeves connect selected different threads, including R25-R32, R28-R32, R32-T38, T38-T45, and T45-T51.
The confirmed MSD range covers R25, R28, R32, R35, T38, T45, and T51. Length, outside diameter, and thread combination vary by configuration. Refer to the parameter tables for the confirmed dimensions of each drill rod coupling.
To select the correct rod coupling sleeve, confirm the thread connection at both ends, drill rod type and diameter, adjacent rod or shank-adapter connection, required length and outside diameter, current product markings or dimensions, and required quantity.
MSD is a China-based coupling sleeve manufacturer and supplier for top hammer drilling tools. Provide the connection details and current sleeve information for technical confirmation and quotation.
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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