GS series economic efficiency drill bits
GS series economic efficiency drill bits
GS series economic efficiency drill bits
GS series economic efficiency drill bits
GS series economic efficiency drill bits
GS series economic efficiency drill bits

GS series economic efficiency drill bits

Economic efficiency drill bit

Product Characteristics:
Optimized groove shape
Higher rigidity more excellent chip removal performance.
Special trough design
Under the same row of eyebrow space, a larger core thickness diameter can be obtained, so as to achieve high efficiency and long life drilling.

Category： Product Center

E-mail: jeni@vellfire-tools.com

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Product Details

 

The function curve arc chip holding groove can obtain a shorter curled iron chip shape, smooth chip removal, not easy to block, and improve the processing life while ensuring stability!

Special trough design

Under the same chip removal space, a larger core thickness diameter can be obtained, thereby achieving high efficiency and long life drilling.

 

 

 

Product Model

3D twist drill (Internal cooling/external cooling)

diameter(d) Slot length(l) Shank diameter (D) Total length(L)
D3.00-D3.70 20 6 62
D3.80-D4.70 24 6 66
D4.80-D6.00 28 6 66
D6.10-D7.00 34 8 79
D7.10-D8.00 41 8 79
D8.10-D10.0 47 10 89
D10.1-D12.0 55 12 102
D12.1-D14.0 60 14 107
D14.1-D16.0 65 16 115
D16.1-D18.0 73 18 123
D18.1-D20.0 79 20 131

 

5D twist drill (Internal cooling/external cooling)

diameter(d) Slot length(l) Shank diameter (D) Total length(L)
D3.00-D3.90 28 6 66
D4.00-D4.70 36 6 74
D4.80-D6.00 44 6 82
D6.10-D8.00 53 8 91
D8.10-D10.0 61 10 103
D10.1-D12.0 71 12 118
D12.1-D14.0 77 14 124
D14.1-D16.0 83 16 133
D16.1-D18.0 93 18 143
D18.1-D20.0 101 20 153

Support non-standard specification customization

 

Important Reminder:

This parameter is for reference only, please according to the actual drill bit specifications,

Processing conditions and customer specific requirements to make appropriate adjustments,

In case of doubt or anomalies,

Please contact our technical personnel in time, thank you!

 

External cold

Processing material General steel, carbon steel Alloy steel Tempered steel, die steel
SS400 S45C (200HB) SCM440,42CrMo (200-300HB) SKD61 (30-40HRC)
Outer diameter D (mm) Cutting speed F (mm/min) Feed rate f (mm/rev) Cutting speed F (mm/min) Feed rate f (mm/rev) Cutting speed F (mm/min) Feed rate f (mm/rev)
4 40-60-80 0.06-0.08-0.15 40-50-60 0.06-0.07-0.15 20-30-40 0.06-0.08-0.1
6 0.1-0.13-0.15 0.1-0.12-0.15 0.06-0.09-0.15
8 0.1-0.16-0.18 0.12-0.15-0.2 0.08-0.1-0.15
10 0.15-0.2-0.25 0.15-0.18-0.25 0.1-0.12-0.15
12 0.2-0.23-0.3 0.15-0.2-0.25 0.1-0.15-0.18
16 0.25-0.28-0.3 0.2-0.25-0.3 0.15-0.18-0.2

 

Processing material Gray cast iron Ductile iron Stainless Steel
FC250 (250HB) FCD450 (300HB) SUS304、SUS316 (~200HB)
Outer diameter D (mm) Cutting speed F (mm/min) Feed rate f (mm/rev) Cutting speed F (mm/min) Feed rate f (mm/rev) Cutting speed F (mm/min) Feed rate f (mm/rev)
4 50-60-70 0.08-0.1-0.15 40-50-60 0.07-0.09-0.15 30-40-50 0.06-0.08-0.13
6 0.1-0.15-0.2 0.15-0.13-0.2 0.08-0.1-0.15
8 0.15-0.2-0.25 0.15-0.18-0.25 0.1-0.12-0.15
10 0.2-0.25-0.3 0.15-0.2-0.25 0.1-0.15-0.2
12 0.2-0.27-0.35 0.2-0.23-0.3 0.15-0.18-0.2
16 0.25-0.3-0.35 0.2-0.25-0.3 0.15-0.2-0.25

 

Internal cold

Processing material General steel, carbon steel Alloy Steel Tempered steel, die steel
SS400 S45C (200HB) SCM440,42CrMo (200-300HB) SKD61 (30-40HRC)
Outer diameter D (mm) Cutting speed F (mm/min) Feed rate f (mm/rev) Cutting speed F (mm/min) Feed rate f (mm/rev) Cutting speed F (mm/min) Feed rate f (mm/rev)
4 60-70-80 0.08-0.1-0.15 40-60-70 0.07-0.09-0.15 25-34-45 0.06-0.08-0.1
6 0.1-0.15-0.2 0.15-0.13-0.2 0.06-0.09-0.15
8 0.15-0.2-0.25 0.15-0.18-0.25 0.08-0.12-0.15
10 0.2-0.25-0.3 0.15-0.2-0.25 0.1-0.15-0.18
12 0.2-0.27-0.35 0.2-0.23-0.3 0.12-0.17-0.2
16 0.25-0.3-0.35 0.2-0.25-0.3 0.15-0.18-0.2

 

Processing material Gray cast iron Ductile iron Stainless Steel Titanium alloy
FC250 (250HB) FCD450 (300HB) SUS304、SUS316 (~200HB) Titanium alloy
Outer diameter D (mm) Cutting speed F (mm/min) Feed rate f (mm/rev) Cutting speed F (mm/min) Feed rate f (mm/rev) Cutting speed F (mm/min) Feed rate f (mm/rev) Cutting speed F (mm/min) Feed rate f (mm/rev)
4 60-70-100 0.08-0.12-0.15 50-60-80 0.07-0.1-0.15 30-50-60 0.07-0.1-0.13 20-30-40 0.05-0.06-0.1
6 0.1-0.15-0.2 0.15-0.13-0.2 0.1-0.12-0.15 0.05-0.07-0.1
8 0.15-0.2-0.25 0.15-0.18-0.25 0.1-0.14-0.18 0.06-0.09-0.12
10 0.2-0.25-0.3 0.15-0.22-0.25 0.12-0.17-0.2 0.08-0.12-0.15
12 0.2-0.28-0.35 0.2-0.25-0.3 0.15-0.2-0.23 0.1-0.13-0.15
16 0.25-0.3-0.35 0.25-0.27-0.3 0.2-0.23-0.25 0.1-0.15-0.18

Keywords： GS series economic efficiency drill bits

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