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| Place of Origin: | China |
| Brand Name: | MIROC |
| Model Number: | 4148300981-4148300984 |
| Minimum Order Quantity: | 50 |
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| Price: | negotiation |
| Packaging Details: | Carton Box or Wooden Box |
| Delivery Time: | 25 days |
| Payment Terms: | T/T or L/C |
| Supply Ability: | 20000 pieces per month |
| High Light: | stone drilling bits,mining drill bits |
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Wear Resistance Retractable Drill Bit ST58 3.5 inch 4.5 inch
Description
This type of bit is well known for its wear resistance on soft to medium-hard rock formations (between 55 Mpa to 165 Mpa compressive strength). Featuring spherical tungsten carbide inserts that is known to have strong configuration against carbide fracture. Recommended for eliminating hole deviation.
• Widely used drifting and tunneling
• Bit face design is ideal for soft to medium rock formations
• With Retrac Wings to help guide the bit in and out of the hole
• Effective in straight hole drilling
Color: Green,Blue or Based on Customer requirements
Material: Tungsten carbide and high strength alloy steel
Processing: CNC milling and proprietary heat treatment process
Type: ST58 Retrac Button Bit Spherical Buttons
Applications
• Underground mining
• Tunneling
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) |
| 4148300981 | 89 | 3 1/2 | 6x12 | 8x14 |
| 4148300982 | 89 | 3 1/2 | 4x13, 1x13 | 8x13 |
| 4148300983 | 102 | 4 | 7x12 | 8x14 |
| 4148300984 | 115 | 4 1/2 | 6x14 | 8x16 |
| Product Code and Brief Description | Angle |
Front Flushing Holes |
Side Flushing Holes |
Weight (kg) |
| R1489-ST58-S-1, ST58 Retrac Button Bit, Spherical Buttons | 35° | 2 | 1 | 5.1 |
| R1389-ST58-S, ST58 Retrac Button Bit, Spherical Buttons | 35° | 4 | - | 5.1 |
| R1589-ST58-S, ST58 Retrac Button Bit, Spherical Buttons | 35° | 2 | 1 | 6.5 |
| R1489-ST58-S-2, ST58 Retrac Button Bit, Spherical Buttons | 35° | 2 | - | 8.5 |
Contact Person: Mr. Yingkai Zhang
Tel: +86 18501231988
