• Hole Guide Saw Metalworking Self Centering Opener Pilot Drill
  • Hole Guide Saw Metalworking Self Centering Opener Pilot Drill
  • Hole Guide Saw Metalworking Self Centering Opener Pilot Drill
  • Hole Guide Saw Metalworking Self Centering Opener Pilot Drill
  • Hole Guide Saw Metalworking Self Centering Opener Pilot Drill
  • Hole Guide Saw Metalworking Self Centering Opener Pilot Drill

Hole Guide Saw Metalworking Self Centering Opener Pilot Drill

Customized: Customized
Standard: AISI, Carbide Alloy
Length: Jobber-length
Type: Center Drill Bit
Material: High Speed Steel
Usage: Wood Drilling, Metal Drilling
Samples:
US$ 8/Piece 1 Piece(Min.Order)
| Request Sample
Customization:
Diamond Member Since 2014

Suppliers with verified business licenses

Rating: 5.0/5
Manufacturer/Factory, Trading Company, Group Corporation

Basic Info.

Model NO.
Center drill
Raw Materials
6542 or M35 or M42
Handle
Cylindrical Handle
Angel
60 or 90 or 120 Degree
Body Length
49-138mm
Transport Package
Wooden Box
Specification
small
Trademark
EDWIN
Origin
China

Product Description

Overview :
It is suitable for initial hole processing of pre-drilled holes to ensure the accuracy of drilling processing with ordinary drill bits;
Reserve chamfers for tapping to facilitate tapping processing

How to distinguish between pilot drills and center drills : 
Center drilling: center drilling point hole + chamfering → drilling
Center drilling: Drill a point hole in the center → Drill the right arrow and chamfer with the chamfering knife

Why choose us?
*The surface of the fully ground cutting edge is titanium-plated, and its hardness is higher than that of the raw material. The cutting edge is sharp, strong and durable, and has excellent processing performance when drilling workpiece materials.
*The five-axis process grinding wheel is ground and formed in one go, and the accuracy of fixed-point chamfering is high.
*Processed from high-quality raw materials such as high-speed steel 6542, cobalt-containing M35, and cobalt-containing M42, it has high wear resistance.
*The two large chip grooves are processed by ultra-fine grain grinding wheels, and the unique shape of the chip flutes prevents the generation of chip accumulation.
*Universal chamfered round handle, clamping and fastening, quick assembly, widely used.

Precautions :
*The center drill can only be used for fixing, drilling and chamfering, and must not be used for drilling.
*Be sure to test the tool deflection before use. If it exceeds 0.01MM, please correct it first.
*The shorter the length of the tool protruding from the chuck, the better. If the tool protrudes longer, the rotation speed, feed speed or cutting amount needs to be reduced.
*The verticality of the electric hand drill cannot be guaranteed, so it is not recommended for buyers to use it.
*The cutting edge of the knife is sharp, please do not let children touch it and play with it.
*Before drilling, use a fixed-point drill to drill an initial hole with a depth of 1-2 times the diameter to ensure the accuracy of drilling with ordinary drills, and reserve chamfers for the tap to facilitate tapping processing;
*Fixed-point drilling with drill is suitable for high-speed, long-term drilling, dry processing, etc. before drilling;
*The top angle of the fixed-point drill should be equal to or greater than the final top angle of the micro-drill (if the top angle of the fixed-point drill is small, then when the micro-drill cuts in, the two cutting edges will contact the workpiece before the tip, which can easily cause chipping)

Centering drill selection method :
The center drill is formed by centering and chamfering in one step.
For example, if you want to process a 5mm hole (d1), you usually choose a 6mm*90" center drill (d2) so that subsequent drilling will not be offset and you can get a 0.5mm*90° chamfer.

Technical Data :
D(mm) Length( mm ) L1(mm) 60o 90o 120o HSS 6542 Cobalt M35 High Cobalt M42  
2.0 49 8   · ·   · ·
3.0 50 10 · · · · · ·
4.0 52 12 · · · · · ·
5.0 60 15 · · · · · ·
6.0 66 20 · · · · · ·
8.0 79 25 · · · · · ·
10.0 89 25 · · · · · ·
12.0 102 30 · · · · · ·
14.0 115 35 · · · · · ·
16.0 115 35 · · · · · ·
18.0 130 40   · ·    · ·
20.0 131 40 · · · · · ·
25.0 138 45   · ·   · ·
"·"  means customizable production  

Hole Guide Saw Metalworking Self Centering Opener Pilot Drill

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Diamond Member Since 2014

Suppliers with verified business licenses

Rating: 5.0/5
Manufacturer/Factory, Trading Company, Group Corporation
Export Year
2007-06-01
OEM/ODM Availability
Yes