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Micro Drills

Micro drill bits carbide for aluminium alloy with 5D cutting length

Brand: ZLY TOOLS
Material: Solid carbide
Type: Micro Drill Bits,Mini Drill Bits
Helix angle: right hand spiral 30degree
Point angle: 130°
Cutting Length: 5D
Coating: no coating
Workpiece material: For Aluminum alloy materials drilling  
Coolant supply: external
Product feature: 
1 Micro grain carbide material ensure excellent toughness of tools,improve machining security. 

    Dc
    m7

    Lc

    L1

    L2

    L5

    d1
    h6

    mm

    mm

    mm

    mm

    mm

    mm

    0,5

    3,2

    47

    4

    36

    3

    0,6

    4,1

    47

    5

    35

    3

    0,7

    4,9

    48

    6

    35

    3

    0,75

    5,8

    48

    7

    34

    3

    0,8

    5,8

    48

    7

    34

    3

    0,88

    6,6

    50

    8

    35

    3

    0,9

    6,6

    50

    8

    35

    3

    0,95

    7,5

    50

    9

    34

    3

    1

    7,5

    50

    9

    34

    3

    1,05

    7

    51

    9

    36

    3

    1,1

    7

    51

    9

    36

    3

    1,2

    8

    51

    10

    35

    3

    1,25

    9

    51

    11

    34

    3

    1,3

    9

    53

    11

    36

    3

    1,35

    9

    53

    12

    35

    3

    1,4

    9

    53

    12

    35

    3

    1,45

    10

    53

    13

    34

    3

    1,5

    10

    53

    13

    34

    3

    1,55

    11

    54

    14

    35

    3

    1,6

    11

    54

    14

    35

    3

    1,65

    11

    54

    14

    35

    3

    1,7

    11

    54

    14

    35

    3

    1,75

    12

    54

    15

    34

    3

    1,8

    12

    54

    15

    34

    3

       …………

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