1.Description of Dry Core Drill Bits: 1/4inch,1 3/8inch, 2inch/6mm,35mm,50mm for Granite, 5/8”-11 or
M14 thread
Core drilling thinner applications of stone, including granite,
marble, sandstone, limestone, and so on.
Premium grade core bits that deliver fast drilling speed and extend
product life.
Use application with core drilling machines and hand drills.
Production strictly according to customer requirements.
Size could be customized.
2. Features of Dry Core Drill Bits: 1/4inch,1 3/8inch, 2inch/6mm,35mm,50mm for Granite, 5/8”-11 or
M14 thread
Size: 1/4inch outer diameter is 6mm, segmnet height is 10mm, thickness
is 2mm, crown segment
1 3/8inch outer diameter is 35mm, segmnet height is 10mm, thickness
is 3mm, 4nos, with Vacuum brazed Protect Teeth
2inch outer diameter is 50mm, segmnet height is 10mm, thickness is
3mm, 5nos, with Vacuum brazed Protect Teeth
1. Applications: Stone drilling in counter top, kitchen, toilet
2. Connection Type: 1/2” shaft, 5/8”-11 or M14 thread
3. Segment type: Crown segment or normal segment
4. Welding way: Outer diameter ≤ 18mm is silver soldering, ≥ 20mm
is laser welding.
5. Selling point:Each drill bit has the brazing rods, four outside
and two inside, which protect the steel disc, extend the life.
Outer diameter is less than or equal to OD18 do not have brazing
rod.
6. Delivery time: Around 7-25days
7. Price: Large quantities, price concessions. The quantity is
greater than 100 per order and can be offered for a discount of 5%.
8. Accept sample order to have a test.
Other sizes we also can do.:
| Dry core bits for granite |
| Diameter | Segment Dimension | Teeth No. | Vacuum brazed Protect Teeth |
| mm | Height | Thickness |
| 8 | 10 | 2 | Crown | —— |
| 10 | 10 | 2 | Crown | —— |
| 12 | 10 | 2.5 | Crown | —— |
| 14 | 10 | 2.5 | Crown | —— |
| 16 | 10 | 2.5 | Crown | —— |
| 18 | 10 | 2.5 | Crown | —— |
| 20 | 10 | 2.5 | Crown | 4(O)2(I) |
| 25 | 10 | 2.5 | Crown | 4(O)2(I) |
| 32 | 10 | 3 | 4 | 4(O)2(I) |
| 38 | 10 | 3 | 4 | 4(O)2(I) |
| 60 | 10 | 3 | 6 | 4(O)2(I) |
| 70 | 10 | 3 | 7 | 4(O)2(I) |
| 80 | 10 | 3 | 8 | 4(O)2(I) |
| 90 | 10 | 3 | 9 | 4(O)2(I) |
| 100 | 10 | 3.5 | 9 | 4(O)2(I) |
How dose a dry diamond core bit work?
A diamond core bit does not cut but works by milling. During the
sharpening process performed at the factory, individual diamond
crystals are exposed on the face and sides of the segment and it is
these that do the milling work. The metal matrix holds each diamond
in place. During the work, each diamond is supported by a comet’s
tail which strengthens the supporting action of the bond
immediately “behind” the diamond crystals.
A diamond tool properly suited to the material to be cut, the
equilibrium between the work of the diamond and the
abrasion-resistance of the bond is optimum; the diamond is held in
place until it is destroyed and new crystals appear. It is in this
equilibrium that all the quality of the diamond tool resides.
6mm,8mm,10mm-100mm Diamond Dry Core Drills Bits with brazing rods,
usually for toilets, kitchen, counter tops and other decoration,
drill quartz, granite, marble, etc.
3.Packing and shipping
1) Package: Each Core drill bits are packed in plastic box, then according to
the size, normal put in an export standard carton, gross weight per
carton is limited within 15-20kg.
2) Delivery way: Air Freight when gross weight is above 45kg and less than 100kg. Fast
delivery.
Sea Freight when the gross weight is above 100kg. Cheaper freight
charge.
Courier (TNT, DHL, FedEx, Ups, etc). Small try order, door to door service.
3) Shipping date: If we have steel body in our stock, normally shipment will be
around 7-10 days. If not, usually around 20-30days.
4.FAQS
1) We accept OEM orders for all products, as well as buyers' logos.
2) We can provide custom packaging or tags as you require.
3) Minimum order: negotiable.
4)Informations about our factory, established in 2000 year, Johnson Tools Manufactory Co.,Ltd have
been acting as one of leading manufacturers in China stone and
construction industries.We enjoy good reputation among customers
with trustworthy product quality and creditable service. The steel
disc is purchased from one of the best base manufacturers in China.
Segment is produced by our own factory, which has mature laser
welding technology. We can make custom as you require. Screen
printing, laser marking or logo stickers on the saw blades you can
choose.
Contact us today, you will get more than what you see!
