BTA Deep hole drill head
Our indexable drill heads cover a range of diameters from 25mm up to 250mm. These tools are designed with robust pressed carbide inserts with multiple carbide grades, coatings, chip breaker designs. These tools can also be adjusted with our plus style spare parts. We also offer tools with precision ground inserts for improved chip control.
BTA drill head internal chips discharge design.
Surface nitriding hardness : HRC55-60
Close diameter tolerence and high surface finish
With ideal machine part setup condition 0.25mm per/m tool drift attainable
Higher penetration rate in most materials
BTA deep hole drilling head
1. High quality and competitive price
2. Develivery goods in time
This BTA drill head adopt imported indexable coating blade, it has the advantage of high efficiency, change blade easily, long service life , low using cost. And it can drill on carbon steel, high strength alloy steel ,stainless steel and so on.
precision of hole diameter IT9-11。 Surface roughness：Ra6.3-12.5
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：mm
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Bit specification bit specification
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drill tube size
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Bit specification bit specification
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drill tube size
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17.8-19.5
|
16
|
43 45 47
|
40
|
|
19.51-21.99
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17.5
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48 50 52
|
43
|
|
22-24.99
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20
|
55
|
48
|
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25-26.99
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23
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57 58 60
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52
|
|
27-29.99
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25
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62 63 65
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56
|
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30-31.99
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27
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68 70 72
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61
|
|
34.5-35
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30
|
75
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65
|
|
38-42
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35
|
80
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70
|
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