T51 Retract Drill Bit
The T51 Retract Drill Bit offers superior efficiency by enabling retraction without full drill string removal, drastically cutting downtime. Its robust tungsten carbide design ensures durability in hard-rock drilling, while precision engineering allows adaptability to varied geological conditions, enhancing accuracy and reducing operational costs.
T51 Retract Drill Bit simplifies drilling with its retractable design, enabling quick bit withdrawal without removing the drill string. Durable tungsten carbide tips handle hard rock, reducing downtime. Ideal for mining, geothermal, construction, and environmental projects. Compatible with hydraulic, crawler-mounted, and rotary rigs, it balances efficiency, adaptability, and cost savings.
Parameters:
Description | Button bit made with high quality of best quality alloy steel bar and tungsten carbide, through heat treatment like Atlas. |
Material | Alloy steel bar and tungsten carbide bit |
MOQ | No MOQ required for testing and trial order |
Body type | Normal and Retract type |
Thread type | R22, R25, R28, R32, R38, T38, T45, T51, ST58, ST68, GT60 |
Diameter | 32mm-152mm |
Button bit shape | Spherical, Ballistic and Conical |
Face shape | Flat shape, Drop-center shape |
T51 thread drill bit specification
Product | Dia | Button size | Gauge Button Angle | Flushing hole | Weight | |||
(mm) | (inch) | Gauge No Size | Front No Size | Side | Front | （kg） | ||
| (mm) | (mm) | |||||||
T51 (2″) General Flat Face Button Bit | 76 | 3 | 8×12 | 4×12 | 30° | 1 | 2 | 2.8 |
35° | 1 | 2 | 2.7 | |||||
89 | 3 1/2 | 8×14 | 6×12 | 30° | 2 | 2 | 5 | |
35° | 2 | 2 | 4.9 | |||||
9×12 | 6×10 | 30° | 0 | 3 | 4.7 | |||
9×13 | 6×10 | 35° | 0 | 3 | 4.6 | |||
102 | 4 | 8×14 | 6×14 | 30° | 0 | 2 | 5.9 | |
35° | 0 | 2 | 5.8 | |||||
8×16 | 6×14 | 30° | 0 | 2 | 6 | |||
35° | 0 | 2 | 5.9 | |||||
9×14 | 7×12 | 30° | 0 | 3 | 5.9 | |||
35° | 0 | 3 | 5.8 | |||||
115 | 4 1/2 | 8×16 | 6×14 | 30° | 0 | 2 | 6.9 | |
35° | 0 | 2 | 6.8 | |||||
9×14 | 7×14 | 30° | 0 | 3 | 6.8 | |||
35° | 0 | 3 | 6.7 | |||||
9×14 | 8×13 | 30° | 0 | 3 | 7 | |||
35° | 0 | 3 | 6.9 | |||||
127 | 5 | 8×16 | 9×12 | 30° | 0 | 2 | 7.5 | |
35° | 0 | 2 | 7.4 | |||||
40° | 0 | 2 | 7.3 | |||||
9×14 | 8×14 | 30° | 0 | 3 | 7.6 | |||
35° | 0 | 3 | 7.5 | |||||
40° | 0 | 3 | 7.4 | |||||
T51(2″) General Drop Center Button Bit | 89 | 3 1/2 | 9×12 | 7×11 | 30° | 0 | 3 | 4.6 |
35° | 0 | 3 | 4.5 | |||||
102 | 4 | 9×14 | 6×12 1×12 | 30° | 0 | 3 | 5.8 | |
35° | 0 | 3 | 5.8 | |||||
115 | 4 1/2 | 9×14 | 6×13 1×12 | 30° | 0 | 3 | 6.9 | |
35° | 0 | 3 | 6.9 | |||||
127 | 5 | 9×14 | 6×14 2×13 | 30° | 0 | 3 | 7.6 | |
35° | 0 | 3 | 7.6 | |||||
T51(2″)Retract Flat Face Button Bit | 89 | 3 1/2 | 8×13 | 6×12 | 30° | 0 | 2 | 5.1 |
8×14 | 6×12 | 35° | 0 | 2 | 5.1 | |||
102 | 4 | 8×14 | 6×12 | 30° | 0 | 2 | 7.3 | |
35° | 0 | 2 | 7.3 | |||||
115 | 4 1/2 | 8×14 | 6×14 | 30° | 0 | 2 | 9.7 | |
8×13 | 6×13 | 35° | 0 | 2 | 9.7 | |||
127 | 5 | 8×16 | 8×14 | 30° | 0 | 2 | 12.5 | |
35° | 0 | 2 | 12.5 | |||||
T51(2″) Retract Drop Center Button Bit | 89 | 3 1/2 | 9×11 | 3×11 2×110 | 30° | 1 | 3 | 4.8 |
35° | 1 | 3 | 4.8 | |||||
102 | 4 | 9×12 | 3×12 3×11 | 30° | 1 | 3 | 6.9 | |
35° | 1 | 3 | 6.9 | |||||
115 | 4 1/2 | 9×14 | 6×12 2×11 | 30° | 0 | 3 | 10.3 | |
35° | 0 | 3 | 10.3 | |||||
127 | 5 | 9×14 | 6×13 2×12 | 30° | 0 | 3 | 12.1 | |
35° | 0 | 3 | 12.1 | |||||
Functions:
Key features include a retractable mechanism for rapid bit withdrawal, compatibility with dust/mud-flush systems for debris clearance, and high-speed penetration capabilities. The T51 threading ensures seamless integration with standard rigs, and its modular design supports quick replacement of worn components.
Usage methods:
Attach the bit to T51-compatible rigs, ensuring secure threading. Operate retraction via hydraulic or mechanical controls during pauses to avoid jamming. Monitor drilling parameters (RPM, torque, flushing pressure) to optimize performance. Post-use, clean the bit, inspect for wear, and lubricate to prolong lifespan.
Application fields:
Ideal for mining exploration (core sampling), geothermal drilling, deep foundation piling in construction, environmental soil testing, and auxiliary oil/gas well operations. Its versatility suits both surface and underground projects.
Precautions:
Ensure rig compatibility and operator training for retraction mechanisms. Avoid overloading the bit to prevent fractures. Regularly inspect for cracks or excessive wear, especially in abrasive formations. Store in corrosion-resistant conditions and follow manufacturer torque specifications during installation.
Applicable drilling rigs:
Compatible with hydraulic diamond core rigs, crawler-mounted multipurpose drills, underground tunneling rigs, and rotary rigs with T51 threading. Commonly used in exploration, geotechnical engineering, and industrial drilling setups.
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