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CNC Drilling Carbide Spot Drill Bit Sharpen NC

  • CNC Drilling Carbide Spot Drill Bit Sharpen NC
  • CNC Drilling Carbide Spot Drill Bit Sharpen NC
  • CNC Drilling Carbide Spot Drill Bit Sharpen NC

CNC Drilling Carbide Spot Drill Bit Sharpen NC

    Unit Price: 1 USD
    Min. Order: 10 Piece/Pieces
    Packaging: 1piece in a plastic pipe ,10pieces per group and air bubble paper in a carton to reduce the shock.
    Productivity: 1000000PCS
    Brand: OEM
    Transportation: Ocean,Land,Air,Express
    Place of Origin: Changzhou,Jiangsu
    Supply Ability: 10000000PCS
    Certificate: ISO
    HS Code: 8207709000
    Port: Shanghai

Product Description

CNC Drilling Solid Carbide Spot Drill Bit Sharpen NC Spot Drill

About Spot Drills
A spot drill typically has a tight tolerance point geometry with a very short flute length.
It is important to know that a spot drill has no land or body relief, and is NOT designed to drill past the depth of the point angle, which is just enough to drill an detent or "dimple" in the workpiece.
Spot drills are used to improve the accuracy of secondary drill operations but they can be used as a chamfering tool if the spot drill diameter is larger than the final hole size.
Ideally, the spot drill diameter should be about 70% of the size of your final drill diameter. The spot drill point angle should be greater than or less than the final drill’s point angle.

  • Spot drilling is not recommended in hardened steels.
  • Contacting the corners of the carbide drill before the center point in the opening of the hole could lead to corner chipping.
Using a spot drill with an angle less than the drill point angle WILL cause the drill flutes to be "blown off"
Never use a 90 ̊ Spot drill that will be followed by a 140 ̊ drill point!

Spot Drill Point Depth
60 ̊ 0.866 x dia = point depth
82 ̊ 0.575 x dia = point depth
90 ̊ 0.500 x dia = point depth
118 ̊ 0.300 x dia = point depth
120 ̊ 0.288 x dia = point depth
135 ̊ 0.207 x dia = point depth

Product Name
CNC Drilling Solid Carbide Spot Drill Bit Sharpen NC Spot Drill
Tungsten Carbide,Solid Carbide,Cemented Carbide
Product Type
Solid Carbide Drill Bit
Altin, Tialn, Tisin, Tin, DLC,Nano, Diamond
Point Angle
60/90/120 degree
Metric & Inch Size Based On Your Requirement
Drill Bit Type
Twist Drill bit,Center Drill Bit,Spot Drill Bit,Step Drill Bit,Drill Bit With Coolant Hole
Suitable For
Steel, Stainless Steel, Die Steel, Mould Steel, Carbon Steel, Cast Iron, Copper, etc.

sharpen spot drills

CNC Drilling tools

Supal(changzhou)Precision Tools Co.,Ltd

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 Supal (Changzhou) Precision Tools Co., Ltd. has been engaged in design, production and marketing of solid carbide tools for many years,with total investment of more than 10 million, and consists of a group of experienced employees.. As a professional tools manufacturer, it has become one of the the director members of Changzhou Xiaxiashu Tools Association. The company has introduced Walter and Schutte of Germany, ANCA of Australia and five-shaft NC cutter grinding machines; in addition, the company is equipped with cutter automatic detector of ZOLLER and PG1000 ultra-precision multifunctional detector of EUROTECH. The leading products of the company are: solid carbide milling cutter and hole processing cutter; furthermore, we can also design and produce various non-standard cutters based on the customers' requirements. Our products have been extensively used in domestic aviation, automobile, machinery, mould, plastic, electronics, medical devices and other high precision finishing fields. Relying on the service philosophy of 'integrity based, customer top' and objective of 'survive on quality, develop by credit', the company can provide the customers with satisfactory products and services. The company has Sufficient production capacity in various types of 3C tools for years. Fast Proofing & delivery, stable quality! If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future.

Company Info

  • Company Name: Supal(changzhou)Precision Tools Co.,Ltd
  • Representative: TianQiang Jiang
  • Product/Service: Carbide End Mill , Carbide Drill Bits , Carbide Reamers , Carbide Saw Blade , Carbide Inserts , Carbide Special Tools
  • Capital (Million US $): 4800000
  • Year Established: 2016
  • Total Annual Sales Volume (Million US $): US$10 Million - US$50 Million
  • Export Percentage: 11% - 20%
  • Total Annual Purchase Volume (Million US $): Below US$1 Million
  • No. of Production Lines: 3
  • No. of R&D Staff: 5 -10 People
  • No. of QC Staff: 5 -10 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 3,000-5,000 square meters
  • Factory Location: No.105 Punan Street,Xixiashu Town ,Xinbei District,Changzhou City, Jiangsu Province,China
  • Contact Person: Ms. Dora
  • Tel: 86-0519-83331892
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