Wet&Dry Stone diamond core drill bit for granite marble -Granite Core Bit

Like other stone cutting tools, the best supplier of granite core bit and stone diamond core drill bit is from Quanzhou which is widely-known as granite base in China. After hundreds of tests, the stone diamond core drill bits produced by ChinShine are really competitive in both quality and price. They have been exported to more than 38 countries including America, other American countries and European countries.
ChinShine produces a variety of stone diamond core drill bits and diamond hole saw bit for your needs: wet core drill bits, dry core drill bits and vacuum brazed core drill bits. Thereinto, dry core drill bits include core drill bits with protection segments and regular core drill bits with vacuum brazed diamonds on side.
Thread/Joint: M14, 5/8-11 etc.
Length: 100mm or 107mm
Segment: crown segment, turbo segment, regular shape segment.
Diameter: 9.5mm, 20mm, 22mm, 25mm, 30mm, 32mm, 35mm, 40mm, 45mm, 65mm, 68mm, 75mm 
In Inch: 3/8", 3/4", 7/8", 1", 1-1/4", 1-3/8", 1-1/2", 1-3/4", 2", 2-1/2" and 3"
Customized accepted.

To adapt to different working condition, ChinShine dry stone diamond core drill bits are designed for drilling granite without feeding water. Such a dry granite core bit is installed on high velocity angle grinder with a 5/8"-11 or M14 thread. By adopting Vacuum Brazed Technique, the core drill bits offer the best drilling performance and they can drill through granite or engineered stone countertop with utmost 50mm depth. They can be used for drilling the faucet-mounting holes on countertops and vanities.
Dry granite core drill bit with T shape turbo segment and diamond vacuum brazed outside protection provides clean cut and steel core protection. Feeding water while using dry core drill bit will extend the life span greatly. It is idea for drilling faucet mounting holes in stone countertops, plumbing lines for showers and vanities.
35mm dry granite core bit
ChinShine brand dry diamond core drill bit takes about 22 seconds to drill through medium hard granite tiles of 2 cm thickness, the drilling life is 45 holes. The drilling speed of ChinShine dry core drill bits is 20% faster than other Chinese suppliers which is almost reach the quality of Korean tools. Its life is 15% longer than Korean one while the price is 70% less.

Max 7700 RPM for diameter of 32mm and 35mm. Max 6000 RPM for diameter of 40mm and 45mm.  
Test Result: Drilling the medium hard granite slab in 20mm thickness
  ChinShine Granite Core Bit Korean Granite Core Bit Chinese Granite Core Bit
Time 20-25 seconds 18-25 seconds 28-33 seconds 
Life 44-50 holes 36-40 holes 30-35 holes
Note: for continuous dry coring operation, it is suggested to feed cooling water after drilling every 5 holes to avoid over heating.Proper cooling avails extending the life span.
Welcome to buy stone diamond core drill bit, granite core drill bit, dry core bit, diamond hole saw bit from professional supplier - ChinShine.
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