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Product Name: T38 T45 T51 89MM Drop Center Drill Bit
Place of Origin: China
Brand Name: LITIAN
Certification: ISO9001:2015
Category: Button Bit
Drop center drill bit is mainly suitable for medium hard rock, low abrasiveness rock and integrity rock formation. This concave design has a straightening feature in the drop center, which helps the thread button bit drill straighter holes in less consolidated rock. Litian can provide various types of drop center drill bits for your choosing.
As a leading drop center drill bit manufacturer, Litian offers a wide range of options tailored to your drilling needs. Whether you require T38, T45, T51, or 89MM drop center drill bits, our products are engineered for durability, efficiency, and optimal performance.
Litian's best drop center drill bits are crafted using high-quality materials and advanced production techniques, ensuring their suitability for demanding applications. The innovative design not only improves drilling speed but also extends the lifespan of the bit, making it a cost-effective solution for your drilling projects.
If you're looking for drop center drill bits on sales, Litian provides competitive pricing without compromising on quality. Our professional team is ready to assist you in selecting the most suitable drill bits for your specific requirements.
Wide Compatibility: Available in T38, T45, T51 sizes and more, perfect for different drilling rigs and applications.
High Durability: Manufactured with wear-resistant materials to withstand harsh environments.
Precision Design: Concave structure with a drop center ensures straighter and more accurate drilling.
Custom Solutions: We offer tailored products to meet unique project needs.
For high-quality drop center drill bits on sales, trust Litian to deliver the best solutions for your drilling projects. Contact us today to explore our full product range.
Thread：R32, R38, T38, T45,T51
Skirt Design：Standard skirt, Retrac skirt
Standard skirt Button Bits：
Appearance | Thread | Diameter | Buttons | Flushing Hole | Weight | Model No. | ||||
[mm] | [in] | Gauge | Front | Drop Center | Side | Front | [Kg] | |||
| R38 | 76 | 3" | 6×13 | 3×11 | 1×10 | 1 | 3 | 1.9 | R38-7610ZCA |
89 | 3 1/2" | 6×13 | 3×11 | 2×11 | 1 | 3 | 3.3 | R38-8911ZCA | ||
| 76 | 3" | 8×11 | 4×11 | 1×11 | - | 4 | 2.9 | R38-7612ZCA | |
| T38 | 64 | 2 1/2" | 6×11 | 3×10 | 1×10 | 1 | 3 | 1.7 | T38-6410ZCA |
70 | 2 3/4" | 6×12 | 3×10 | 1×10 | 1 | 3 | 2.2 | T38-7010ZCA | ||
76 | 3" | 6×13 | 3×11 | 1×10 | 1 | 3 | 2.3 | T38-7610ZCA | ||
89 | 3 1/2" | 6×13 | 3×11 | 2×11 | 1 | 3 | 3.3 | T38-8911ZCA | ||
| 64 | 2 1/2" | 8×10 | 4×10 | 1×9 | 1 | 4 | 1.7 | T38-6413ZCA | |
76 | 3" | 8×11 | 4×11 | 1×11 | - | 4 | 2.7 | T38-7613ZCA | ||
89 | 3 1/2" | 8×12 | 4×11 | 1×11 | 1 | 4 | 3.3 | T38-8913ZCA | ||
89 | 3 1/2" | 8×12 | 4×12 | 2×10 | - | 4 | 3.3 | T38-8914ZCA | ||
102 | 4" | 8×12 | 4×12 | 4×11 | - | 4 | 4.7 | T38-10216ZCA | ||
102 | 4" | 8×13 | 4×12 | 3×12 | - | 4 | 4.7 | T38-10215ZCA | ||
| T45 | 76 | 3" | 6×13 | 3×11 | 1×10 | 1 | 3 | 2.4 | T45-7610ZCA |
76 | 3" | 8×12 | 4×11 | 1×11 | - | 4 | 2.6 | T45-7613ZCA | ||
89 | 3 1/2" | 8×12 | 4×12 | 1×11 | - | 4 | 3.6 | T45-8913ZCA | ||
89 | 3 1/2" | 8×14 | 4×14 | 2×10 | - | 4 | 3.7 | T45-8914ZCA | ||
102 | 4" | 8×12 | 4×12 | 4×11 | - | 4 | 4.7 | T45-10216ZCA | ||
102 | 4" | 8×13 | 4×12 | 3×12 | - | 4 | 4.7 | T45-10215ZCA | ||
| T51 | 89 | 3 1/2" | 8×12 | 4×11 | 1×11 | - | 4 | 4.6 | T51-8913ZCA |
89 | 3 1/2" | 8×12 | 4×12 | 2×10 | 1 | 4 | 4.5 | T51-8914ZCA | ||
102 | 4" | 8×12 | 4×12 | 4×11 | - | 4 | 4.7 | T51-10216ZCA | ||
115 | 4 1/2" | 8×14 | 4×13 | 2×13 | 1 | 4 | 6.8 | T51-11514ZCA | ||
127 | 5" | 8×14 | 4×14 | 4×13 | - | 4 | 7.5 | T51-12716ZCA | ||
| 165 | 6 1/2" | 9×16 | 9×14 | 4×14 | - | 3 | 14.4 | T51-16522ZCA | |
178 | 7" | 9×16 | 9×16 | 4×14 | - | 3 | 15.1 | T51-17822ZCA | ||
Retrac Button Bits：
Appearance | Thread | Diameter | Buttons | Flushing Hole | Weight | Model No. | ||||
[mm] | [in] | Gauge | Front | Drop Center | Side | Front | [Kg] | |||
| R32 | 76 | 3" | 8×11 | 4×11 | 1×11 | - | 4 | 3.3 | R32-7613YFA |
| R38 | 64 | 2 1/2" | 8×10 | 4×10 | 1×9 | 1 | 4 | 1.9 | R38-6413YFA |
70 | 2 3/4" | 8×10 | 4×10 | 1×9 | 1 | 4 | 2.4 | R38-7013YFA | ||
76 | 3" | 8×11 | 4×11 | 1×11 | - | 4 | 3.3 | R38-7613YFA | ||
89 | 3 1/2" | 8×12 | 4×12 | 2×10 | 1 | 4 | 5.3 | R38-8914YFA | ||
89 | 3 1/2" | 8×12 | 4×11 | 1×11 | 1 | 4 | 5.3 | R38-8913YFA | ||
| T38 | 64 | 2 1/2" | 8×10 | 4×10 | 1×9 | 1 | 4 | 1.9 | T38-6413YFA |
70 | 2 3/4" | 8×10 | 4×10 | 1×9 | 1 | 4 | 2.4 | T38-7013YFA | ||
| T45 | 76 | 3" | 8×11 | 4×11 | 1×11 | - | 4 | 3.2 | T45-7613YFA |
89 | 3 1/2" | 8×12 | 4×12 | 2×10 | 1 | 4 | 5.4 | T45-8914YFA | ||
102 | 4" | 8×12 | 4×12 | 3×12 | - | 4 | 7.8 | T45-10215YFA | ||
102 | 4" | 8×13 | 4×12 | 4×12 | - | 4 | 7.8 | T45-10216YFA | ||
115 | 4 1/2" | 8×14 | 4×13 | 3×12 | - | 4 | 7.8 | T45-11515YFA | ||
| T51 | 89 | 3 1/2" | 8×12 | 4×12 | 2×10 | 1 | 4 | 5.3 | T51-8914YLA |
89 | 3 1/2" | 8×12 | 4×11 | 1×11 | 1 | 4 | 5.3 | T51-8913YFA | ||
| 89 | 3 1/2" | 8×12 | 4×12 | 2×10 | 1 | 4 | 5.4 | T51-8914YFA | |
102 | 4" | 8×12 | 4×12 | 3×12 | - | 4 | 7.8 | T51-10215YFA | ||
102 | 4" | 8×13 | 4×12 | 4×12 | - | 4 | 7.8 | T51-10216YFA | ||
115 | 4 1/2" | 8×14 | 4×13 | 3×12 | - | 4 | 7.8 | T51-11515YFA | ||
115 | 4 1/2" | 8×14 | 4×14 | 3×12 | - | 4 | 7.8 | T51-11515YFA | ||
115 | 4 1/2" | 8×14 | 4×14 | 4×12 | - | 4 | 10 | T51-11516YFA | ||
| 89 | 3 1/2" | 9×11 | 3×11 | 2×10 | 1 | 3 | 4.8 | T51-8914YFA | |
102 | 4" | 9×12 | 3×12 | 3×11 | 1 | 3 | 6.9 | T51-10215YFA | ||
110 | 4 21/64″ | 9×14 | 6×12 | 2×11 | - | 3 | 10 | T51-11017YFA | ||
127 | 5" | 8×16 | 4×14 | 4×14 | - | 4 | 13.5 | T51-12716YFA | ||
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Litian is a professional manufacturer focused on the production of rock drilling tools and excavation tools.
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