50mm Diamond Dry Core Drill Bits for Granite 5/8”-11 or M14 thread

Basic Information
Place of Origin: CHINA
Brand Name: JOHNSON TOOLS
Certification: GB , SGS
Model Number: 1/4inch,1 3/8inch, 2inch/6mm,35mm,50mm
Minimum Order Quantity: 20pcs
Price: Negotiate
Packaging Details: Plastic box
Payment Terms: L/C, T/T, Western Union,Paypel
Supply Ability: 10000pcs per month
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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)

 

50mm Diamond Dry Core Drill Bits for Granite 5/8”-11 or M14 thread

 

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.

 

50mm Diamond Dry Core Drill Bits for Granite 5/8”-11 or M14 thread

 

 

 

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.

 

50mm Diamond Dry Core Drill Bits for Granite 5/8”-11 or M14 thread

 

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!

 

50mm Diamond Dry Core Drill Bits for Granite 5/8”-11 or M14 thread

Contact Details
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WhatsApp : 8618936085316