Whatapp/Mobile: +86-150-3576-8372
New Design DTH Drill Bits For NUMA Series High Air Pressure DTH Hammer
We can design and manufacture the personalized products to meet your specical apllication, such as changing the tungsten carbide insert profile (spherical, ballistic, etc.), face profile (flat face, concave, convex, etc.), and flushing holes.
Color: Green,Blue or Based on Customer requirements
NUMA Series DTH Bit Specification:
NUMA Series DTH Button Bit | ||||||
DTH Button Bit | Diameter | Buttons and Size (mm) | Flushing hole | Weight | ||
mm | inch | Front | Gauge | kg | ||
Numa100 | 254 | 10 | 21x16 | 12x18 | 2 | 90.0 |
305 | 12 | 36x16 | 12x18 | 4 | 102.0 | |
311 | 12 1/4 | 36x16 | 12x18 | 4 | 104.0 | |
318 | 12 1/2 | 38x16 | 12x18 | 4 | 106.0 | |
330 | 13 | 42x16 | 14x18 | 4 | 112.0 | |
NUMA120 | 305 | 12 | 12x18 | 36x16 | 4 | 152.0 |
311 | 12 1/4 | 12x18 | 36x16 | 4 | 158.0 | |
330 | 13 | 16x18 | 42x16 | 4 | 165.0 | |
346 | 13 5/8 | 16x19 | 48x16 | 4 | 178.0 | |
381 | 15 | 16x19 | 48x16 | 4 | 195.0 | |
NUMA125 | 305 | 12 | 12x18 | 36x16 | 4 | 170.0 |
311 | 12 1/4 | 12x18 | 36x16 | 4 | 173.0 | |
330 | 13 | 16x18 | 42x16 | 4 | 182.0 | |
346 | 13 5/8 | 16x19 | 48x16 | 4 | 191.0 | |
381 | 15 | 16x19 | 48x16 | 4 | 200.0 |
More Series DTH Button Bit Information:
1'' 2'' Middle Air Pressure DTH Bits
DTH Button Bits for BR1, BR2, BR2 Hammer.
BR Series DTH Button Bit Specification
1'' 2'' Middle Air Pressure DTH Bits | ||||||
DTH Button Bit | Diameter | Buttons and Size (mm) | Flushing hole | Weight | ||
mm | inch | Gauge | Front | kg | ||
BR1 | 64 | 2 1/2 | 6x10 | 3x10 | 2 | 2.6 |
70 | 2 3/4 | 6x12 | 4x9 | 2 | 2.8 | |
76 | 3 | 6x13 | 5x10 | 2 | 3.2 | |
BR2 | 64 | 2 1/2 | 6x13 | 5x10 | 2 | 3.6 |
70 | 2 3/4 | 6x13 | 5x11 | 2 | 4.0 | |
76 | 3 | 6x14 | 5x12 | 2 | 4.2 |
How to order?
Shank Type + Diameter + Face Design + Button
Configuration
To Chose the Right Products
When selecting the right bit for optimum performance you have to balance penetration against bit life. On occasion you can successfully sacrifice bit life for penetration, remember the rule of thumb that states that a 10% increase in penetration covers at least a 20% loss in bit life. our commonly hasthree basic bits head designs: Flat Face, Convex and Concave. These are designed for specific applications for all rock types, hardness’s and conditions:
Bit Face Shape Selection:
Center Drop Bit:
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressure. Maximum hole deviation control.
Concave Face
The all-around application bit face specifically for medium hard and homogeneous rock formations. Good hole deviation control and good flushing capacity.
Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressure. It is the most resistance to steel wash and may reduce the load and wear on gauge buttons, but poor hole deviation control.
Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressure and good resistance to steel wash step gauge bit.
Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formation is applications with high air pressure. Good penetration rates and resistance to steel wash.
Competitive Advantage
• High grade tungsten carbide inserts
• Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment
Contact information
Miss. Tina Yan
whatapp/Mobile: +86-150-3576-8372