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| Categories | Button Drill Bit | 
|---|---|
| Place of Origin: | China | 
| Brand Name: | MIROC | 
| Model Number: | 4148300965-972 | 
| MOQ: | 50 | 
| Packaging Details: | Carton Box or Wooden Box | 
| Delivery Time: | 25 days | 
| Payment Terms: | T/T or L/C | 
| Supply Ability: | 20000 pieces per month | 
| Price: | negotiation | 
| Company Info. | 
| KSQ Technologies (Beijing) Co. Ltd | 
| Verified Supplier | 
| View Contact Details | 
| Product List | 
4.5 Inch ST58 Spherical Rock Button Drill Bit For CNC Milling Drill Bits
Description
This type of bit is well known for its high wear resistance on
medium-hard to hard abrasive rock formations (between 200 Mpa to
260 Mpa compressive strength). Featuring spherical tungsten carbide
inserts that is known to have strong configuration against carbide
fracture.
.
• Widely used in bench and long hole drilling
• Bit face design is ideal for medium-hard to hard abrasive rock
Color: Green or Based on Customer requirements
Material: Tungsten carbide and high strength alloy steel
Processing: CNC milling and proprietary heat treatment process
Type: ST58 Button Bit Spherical Buttons
Applications
• Underground mining
• Tunneling
• Quarry
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
specification
| Part Number | Bit Diameter (mm) | Bit Diameter (inch) | Front Buttons (No. x mm)  | Gauge Buttons (No. x mm)  | 
| 4148300965 | 89 | 3 1/2 | 6x12 | 8x12 | 
| 4148300966 | 89 | 3 1/2 | 6x13 | 8x13 | 
| 4148300967 | 89 | 3 1/2 | 4x13, 1x13 | 8x13 | 
| 4148300968 | 89 | 3 1/2 | 4x12, 2x12 | 8x12 | 
| 4148300969 | 95 | 3 3/4 | 4x13, 1x13 | 8x14 | 
| 4148300970 | 102 | 4 | 6x14 | 8x14 | 
| 4148300971 | 102 | 4 | 6x13 | 8x16 | 
| 4148300972 | 115 | 4 1/2 | 6x14 | 8x16 | 
| Product Code and Brief Description | Angle | Front Flushing Holes  | Side Flushing Holes  | Weight (kg)  | 
| B1489-ST58-S-1, ST58 Button Bit, Spherical Buttons | 35° | 2 | 1 | 4.1 | 
| B1489-ST58-S-2, ST58 Button Bit, Spherical Buttons | 35° | 2 | 1 | 4.1 | 
| B1389-ST58-S-1, ST58 Button Bit, Spherical Buttons | 35° | 4 | - | 4.1 | 
| B1489-ST58-S-3, ST58 Button Bit, Spherical Buttons | 35° | 4 | - | 4.1 | 
| B1389-ST58-S-2, ST58 Button Bit, Spherical Buttons | 35° | 4 | - | 4.6 | 
| B1489-ST58-S-4, ST58 Button Bit, Spherical Buttons | 35° | 2 | - | 6 | 
| B1489-ST58-S-5, ST58 Button Bit, Spherical Buttons | 35° | 2 | 1 | 6 | 
| B1489-ST58-S-6, ST58 Button Bit, Spherical Buttons | 35° | 2 | - | 7 | 
                                 
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