B Type Auto HSS Center Point Drill Bit Colbalt

• Customized: Customized
• Standard: AISI
• Length: Jobber-length
• Type: Center Drill Bit
• Material: Cobalt Steel Alloys
• Usage: Wood Drilling, Metal Drilling
• Model NO.: B type
• Angle: 118 Degree
• Product Material: HSS or Cemented Carbide
• Technic: CBN
• Controlling Mode: CNC
• Customized Support: OEM, ODM, Obm
• Drill Length: 35-125mm
• Transport Package: Wooden Box
• Specification: high stainless steel
• Trademark: EDWIN
• Origin: China

Product Description

The primary distinction fromcentering drill:
·The 60-degree tapered bore serves as the processing guide center
· 120-degree inclined angle guarantees center datum and prevents damage
· 120-degree aperture angle, facilitating automatic entry and cutting positioning
·Ensures a seamless subsequent processing procedure
·Primarily utilized for precision workpiece manipulation
·Type A centering drill does not incorporate a cone guard; Type B centering drill incorporates a cone guard.

Description :
The centering drill, amalgamating drilling, and chamfering, predominantly process the central hole of the workpiece. The central hole is the pivot point and supports the aperture of the workpiece during mechanical processing, notably turning. Centering drills may also be employed for chamfering and countersinking.

Key features :
·Robust wear resistance and lengthy overall service life : This product is crafted from premium-grade high-speed steel or carbide materials, contrasting approximately 90% of common steel available in the market. It boasts the attributes of superior wear resistance and long service life ;
·Utilize state-of-the-art CNC equipment for processing to confirm the stability and consistency of superior quality ;
·The CBN grinding wheel is completely ground to guarantee an excellent finish and sharp edge;
·Enhanced cutting edge angle assures smooth and efficient cutting;
·The 60-large helix angle design rationally increases the removal of chips and ensures a refined and flush chip removal groove;
·The cone surface features a continuous relief angle;
·Appropriate for processing steel, iron castings, nonferrous metals and light metals
·Double-head design, both ends can be utilised for cutting, saving costs.

Technical Data :

Size(mm)	Length( mm )	K ( mm )	D1(mm)	L1(mm)	HSS 6542	Cobalt M35	High Cobalt M42
1.0	35	2.12	4.0	1.3	·	·	·
1.25	40	2.65	5.0	1.6	·	·	·
1.60	45	3.35	6.0	2.0	·	·	·
2.00	50	4.25	8.0	2.5	·	·	·
2.50	56	5.30	10.0	3.1	·	·	·
3.15	60	6.70	10.0	3.9	·	·	·
4.00	67	8.50	14.0	5.0	·	·	·
5.00	75	10.60	18.0	6.3	·	·	·
6.30	80	13.20	20.0	8.0	·	·	·
8.00	100	17.00	25.0	10.1	·	·	·
10.00	125	21.20	31.5	12.8	·	·	·

* : "·"  means customizable production