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[Province: Guangdong ]   
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64mm 76mm R28 Reaming Drill Bit Stone Drill Bits CNC Milling
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64mm 76mm R28 Reaming Drill Bit Stone Drill Bits CNC Milling

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Description


This type of bit is used for making large cut holes in drifting and tunneling. A smaller hole is first drilled and then reamed to the final size in combination with a pilot adapter.


• Widely used in drifting and tunneling
• R28 thread system


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: R28 Reaming Bit 6


 
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

1

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Part Number Bit Diameter (mm) Bit Diameter (inch)

Front Buttons 

(No. x mm)

Gauge Buttons 

(No. x mm)
4148300452 64 2 1/2 2x10 8x9
4148300453 64 2 1/2 4x8 8x9
4148300454 76 3     2x11 8x11
4148300455 76 3     4x10 8x10
4148300456 89 3 1/2 4x11 8x11
4148300457 89 3 1/2 4x10 8x10

2

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Product Code and Brief Description
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Mr. Yan
Tel: 86-755-36989033
Enter between 20 to 3,000 chatacters.
Contact Method
China Hole Saw Online Market
NO.898,North Zhongxing Road, Shenzhen, Guangdong, China (Mainland)
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