T38 CNC Rock Drilling Tools For Tunneling Milling Extension Rod
Description
Male/Female (M/F) rod, speed rod:
M/F drill steel is an alternative to couplings sleeves to include
the female part of the threaded connection as an integral part of
the drill steel. M/F drill steel provides more rigid connections
and is easier to uncouple and handle. The service life also tends
to be better than with separate couplings. The advantages of
drilling with M/F steel include: easy handling, quicker uncoupling,
tighter connections, the potential to drill straighter holes, and
longer service life.
For extension rod and M/F steel process, the below two different
types of heat treatment are used to strengthen high speed and
powerful percussive drill string components to maximize their
performance and reliability. Longer steel larger in diameter,
conventional extension steel, Hexagonal and round cross sections
are available.
Carburizationis a process used to harder the entire rod surface
both internally and externally to strengthen and extend the life of
the rod.
High frequency induction is process where only the thread ends of
the rod are hardened to lengthen thread life.
Drill rod using T38 thread system. With wrench flats to aid in
coupling/decoupling of rods for extension drilling.
• R28 thread system
• Suitable for small hole range
Color: Based on Customer requirements
Material: Tungsten carbide and high strength alloy steel
Processing: CNC milling and proprietary heat treatment process
Type: T38 Extension Rod T38-Round 39-T38 Flushing Hole 14.5 mm
Wrench Flat 32 mm
Applications
• Underground Mining
• Tunneling
Competitive Advantage
High strength chromium-molybdenum steel with high fatigue strength
and excellent wear resistance
Specification
| Part Number | Product Code and Brief Description | Length (mm) | Length (ft/inch) | Diameter (mm) | Diameter (inch) | Weight (kg) |
| 4148300770 | ER39-T38-1220, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 1220 | 4 | 39 | 1 1/2 | 10.2 |
| 4148300771 | ER39-T38-1525, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 1525 | 5 | 39 | 1 1/2 | 12.8 |
| 4148300772 | ER39-T38-1830, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm
| 1830 | 6 | 39 | 1 1/2 | 15.3 |
| 4148300773 | ER39-T38-2435, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 2435 | 8 | 39 | 1 1/2 | 20.4 |
| 4148300774 | ER39-T38-3050, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 3050 | 10 | 39 | 1 1/2 | 25.5 |
| 4148300775 | ER39-T38-3660, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 3660 | 12 | 39 | 1 1/2 | 30.9 |
| 4148300776 | ER39-T38-3965, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 3965 | 13 | 39 | 1 1/2 | 33.2 |
| 4148300777 | ER39-T38-4270, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 4270 | 14 | 39 | 1 1/2 | 35.7 |
| 4148300778 | ER39-T38-4880, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 4880 | 16 | 39 | 1 1/2 | 41.0 |
| 4148300779 | ER39-T38-5530, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 5530 | 18 1/7 | 39 | 1 1/2 | 46.3 |
| 4148300780 | ER39-T38-6095, T38 Extension Rod, T38-Round 39-T38, Flushing Hole 14.5 mm, Wrench Flat 32 mm | 6095 | 20 | 39 | 1 1/2 | 50.9 |
