Brand: OEM
Support Customization: Oem, Odm, Obm
Place Of Origin: China
Material: Carbide
Coating: Altin, Tiain, Ticn, Tin
Packaging: 1piece in a plastic pipe ,10pieces per group and air bubble paper in a carton to reduce the shock.
Productivity: 1000000PCS
Transportation: Ocean,Land,Air,Express
Place of Origin: Changzhou,Jiangsu
Supply Ability: 10000000PCS
Certificate: ISO
HS Code: 8207709000
Port: Shanghai
Payment Type: T/T,Paypal,Western Union
Incoterm: CIF,FOB,EXW
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 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 Material Tungsten Carbide,Solid Carbide,Cemented Carbide HRC 45/55/58/60/65 Product Type Solid Carbide Drill Bit Coating Altin, Tialn, Tisin, Tin, DLC,Nano, Diamond Point Angle 60/90/120 degree Size 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 Tolerance h6 Suitable For Steel, Stainless Steel, Die Steel, Mould Steel, Carbon Steel, Cast Iron, Copper, etc.
Product Categories : Carbide Drill Bits > Spotting Drills
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