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DLTCDK550 series-External cooling drill

Literal statement:
DLTCDK550 drill  was developed for the complex machining of steel materials . It makes a strong impression with its high cutting values and consistently good hole quality. An especially stable and accurate cutting edge is produced thanks to the special micro-geometry . The extremely smooth surface finish of the it's web thinning and flute profile reduces the friction between drill and chip. The machining temperature is reduced and chip evacuation improved. Cutting forces are reduced. These tool features result in maximum hole quality and tool life.


Features:
  • Suitable for drilling steel, stainless steel, cast iron, non-ferrous material.
  • Stub chisel,excellent self-center capability.
  • Radial point, smaller cutting resistance.
  • Lip chamfer, higher feed rate, higher efficiency.
DLTCDK550 series-External cooling drill

Regular size:
 

DLTCDK550 Carbide Drills

DLTCDK550 series-External cooling drill

Ordering code  Outside Diameter
(D)
Flute Length  
 (l)
 Overall Length    
(L)
 Shank Diameter 
(D)
DLTCDK550-005S 0.5 6 26 0.5
DLTCDK550-006S 0.6 6 26 0.6
DLTCDK550-007S 0.7 6 26 0.7
DLTCDK550-008S 0.8 6 26 0.8
DLTCDK550-009S 0.9 6 26 0.9
DLTCDK550-0100S 1 6 26 1
DLTCDK550-011S 1.1 7 28 1.1
DLTCDK550-012S 1.2 8 30 1.2
DLTCDK550-013S 1.3 8 30 1.3
DLTCDK550-014S 1.4 9 32 1.4
DLTCDK550-015S 1.5 9 32 1.5
DLTCDK550-016S 1.6 10 34 1.6
DLTCDK550-017S 1.7 10 34 1.7
DLTCDK550-018S 1.8 11 36 1.8
DLTCDK550-019S 1.9 11 36 1.9
DLTCDK550-020S 2 12 38 2
DLTCDK550-021S 2.1 12 38 3
DLTCDK550-022S 2.2 13 40 3
DLTCDK550-023S 2.3 13 40 3
DLTCDK550-024S 2.4 14 43 3
DLTCDK550-025S 2.5 14 43 3
DLTCDK550-026S 2.6 14 43 3
DLTCDK550-027S 2.7 16 46 3
DLTCDK550-028S 2.8 16 46 3
DLTCDK550-029S 2.9 16 46 3
DLTCDK550-030S 3 16 46 3
DLTCDK550-031S 3.1 18 49 4
DLTCDK550-032S 3.2 18 49 4
DLTCDK550-033S 3.3 18 49 4
DLTCDK550-034S 3.4 20 52 4
DLTCDK550-035S 3.5 20 52 4
DLTCDK550-036S 3.6 20 52 4
DLTCDK550-037S 3.7 20 52 4
DLTCDK550-038S 3.8 20 52 4
DLTCDK550-039S 3.9 22 55 4
DLTCDK550-040S 4 22 55 4
DLTCDK550-041S 4.1 22 55 5
DLTCDK550-042S 4.2 22 55 5
DLTCDK550-043S 4.3 22 55 5
DLTCDK550-044S 4.4 24 55 5
DLTCDK550-045S 4.5 24 55 5
DLTCDK550-046S 4.6 24 58 5
DLTCDK550-047S 4.7 24 58 5
DLTCDK550-048S 4.8 24 58 5
DLTCDK550-049S 4.9 26 58 5
DLTCDK550 -050S 5 26 58 5
DLTCDK550-051S 5.1 26 62 5.1
DLTCDK550-052S 5.2 26 62 5.2
DLTCDK550-053S 5.3 28 62 5.3
DLTCDK550-054S 5.4 28 62 5.4
DLTCDK550-055S 5.5 28 66 5.5
DLTCDK550-056S 5.6 28 66 5.6
DLTCDK550-057S 5.7 28 66 5.7
DLTCDK550-058S 5.8 28 66 5.8
DLTCDK550-059S 5.9 28 66 5.9
DLTCDK550-060S 6 31 66 6
DLTCDK550-061S 6.1 31 70 7
DLTCDK550-062S 6.2 31 70 7
DLTCDK550-063S 6.3 31 70 7
DLTCDK550 -064S 6.4 31 70 7
DLTCDK550 -065S 6.5 31 70 7
DLTCDK550-066S 6.6 31 70 7
DLTCDK550-067S 6.7 31 70 7
DLTCDK550-068S 6.8 34 74 7
DLTCDK550-069S 6.9 34 74 7
DLTCDK550-070S 7 34 74 7
DLTCDK550-071S 7.1 34 74 8
DLTCDK550-072S 7.2 34 74 8
DLTCDK550-073S 7.3 34 74 8
DLTCDK550-074S 7.4 34 74 8
DLTCDK550-075S 7.5 34 74 8
DLTCDK550-076S 7.6 37 79 8
DLTCDK550-077S 7.7 37 79 8
DLTCDK550-078S 7.8 37 79 8
DLTCDK550-079S 7.9 37 79 8
DLTCDK550-080S 8 37 79 8
DLTCDK550-081S 8.1 37 79 9
DLTCDK550 -082S 8.2 37 79 9
DLTCDK550 -083S 8.3 37 79 9
DLTCDK550 -084S 8.4 37 79 9
DLTCDK550-085S 8.5 37 79 9
DLTCDK550-086S 8.6 40 84 9
DLTCDK550-087S 8.7 40 84 9
DLTCDK550-088S 8.8 40 84 9
DLTCDK550-089S 8.9 40 84 9
DLTCDK550-090S 9 40 84 9
DLTCDK550-091S 9.1 40 84 10
DLTCDK550-092S 9.2 40 84 10
DLTCDK550-093S 9.3 40 84 10
DLTCDK550-094S 9.4 40 84 10

DLTCDK550 Carbide Drills

DLTCDK550 series-External cooling drill

Ordering code  Outside Diameter
 (D)
Flute Length    
(l)
 Overall Length   
(L)
Shank Diameter 
(D)
DLTCDK550-095S 9.5 40 84 10
DLTCDK550-096S 9.6 43 89 10
DLTCDK550-097S 9.7 43 89 10
DLTCDK550-098S 9.8 43 89 10
DLTCDK550-099S 9.9 43 89 10
DLTCDK550-100S 10 43 89 10
DLTCDK550-101S 10.1 43 89 11
DLTCDK550-102S 10.2 43 89 11
DLTCDK550-103S 10.3 43 89 11
DLTCDK550-104S 10.4 43 89 11
DLTCDK550-105S 10.5 43 89 11
DLTCDK550-106S 10.6 43 89 11
DLTCDK550-107S 10.7 43 89 11
DLTCDK550-108S 10.8 43 89 11
DLTCDK550-109S 10.9 43 89 11
DLTCDK550-110S 11 47 95 11
DLTCDK550-111S 11.1 47 95 12
DLTCDK550-112S 11.2 47 95 12
DLTCDK550-113S 11.3 47 95 12
DLTCDK550-114S 11.4 47 95 12
DLTCDK550-115S 11.5 47 95 12
DLTCDK550-116S 11.6 47 95 12
DLTCDK550-117S 11.7 47 95 12
DLTCDK550-118S 11.8 47 95 12
DLTCDK550-119S 11.9 47 95 12
DLTCDK550-120S 12 51 102 12
DLTCDK550-121S 12.1 51 102 13
DLTCDK550-122S 12.2 51 102 13
DLTCDK550-123S 12.3 51 102 13
DLTCDK550-124S 12.4 51 102 13
DLTCDK550-125S 12.5 51 102 13
DLTCDK550-126S 12.6 51 102 13
DLTCDK550-127S 12.7 51 102 13
DLTCDK550-128S 12.8 51 102 13
DLTCDK550-129S 12.9 51 102 13
DLTCDK550-130S 13 51 102 13

DLTCDK550 Standard  Drills:

DLTCDK550 series-External cooling drill

Ordering code Outside Diameter 
(D)
 Flute Length  
(l)
DLTCDK550-0030 0.3 5.5
DLTCDK550-0035 0.35 5.5
DLTCDK550-0040 0.4 7
DLTCDK550-0045 0.45 7
DLTCDK550-0050 0.5 8.5
DLTCDK550-0055 0.55 8.5
DLTCDK550-0060 0.6 9.5
DLTCDK550-0065 0.65 9.5
DLTCDK550-0070 0.7 9.5
DLTCDK550-0075 0.75 9.5
DLTCDK550-0080 0.8 9.5
DLTCDK550-0085 0.85 9.5
DLTCDK550-0090 0.9 9.5
DLTCDK550-0095 0.95 9.5
DLTCDK550-0100 1 10.5
DLTCDK550-0105 1.05 10.5
DLTCDK550-0110 1.1 10.5
DLTCDK550-0115 1.15 10.5
DLTCDK550-0120 1.2 10.5
DLTCDK550-0125 1.25 10.5
DLTCDK550-0130 1.3 12
DLTCDK550-0135 1.35 12
DLTCDK550-0140 1.4 12
DLTCDK550-0145 1.45 12
DLTCDK550-0150 1.5 12
DLTCDK550-0155 1.55 12
DLTCDK550-0160 1.6 12
DLTCDK550-0165 1.65 12
DLTCDK550-0170 1.7 12
DLTCDK550-0175 1.75 12
DLTCDK550-0180 1.8 12
DLTCDK550-0185 1.85 12
DLTCDK550-0190 1.9 12
DLTCDK550-0195 1.95 12
DLTCDK550-0200 2 12
DLTCDK550-0205 2.05 12
DLTCDK550-0210 2.1 12
DLTCDK550-0215 2.15 12
DLTCDK550-0220 2.2 12
DLTCDK550-0225 2.25 12
DLTCDK550-0230 2.3 12
DLTCDK550-0235 2.35 12
DLTCDK550-0240 2.4 12
DLTCDK550-0245 2.45 12
DLTCDK550-0250 2.5 12
DLTCDK550-0255 2.55 12
DLTCDK550-0260 2.6 12
DLTCDK550-0265 2.65 12
DLTCDK550-0270 2.7 12
DLTCDK550-0275 2.75 12
DLTCDK550-0280 2.8 12
DLTCDK550-0285 2.85 12
DLTCDK550-0290 2.9 12
DLTCDK550-0295 2.95 12
DLTCDK550-0300 3 12
DLTCDK550-0305 3.05 12
DLTCDK550-0310 3.1 12
DLTCDK550-0315 3.15 12
DLTCDK550-03175 3.175 12
We can produce 3D,5D, 8D drills according to customer's requirements or nonstandard drills as customized. We could also produce nonstandard end mills as customized. 

Tool material composition:
1.Physical Properties:
A) Hardness greater than or equal to 92.8 HRA;
B) Density greater than or equal to 14.2 g/cm³;
C) TRS greater than or equal to 4200 N/mm²;
D) Free of ETA phase condition;
E) No contamination by other materials;
F) Porosity = A00 / B00 / C00 ;
G) Uniform and consistent grain size. No grain size can be   larger than specified.
H) Chromium carbide grain growth inhibitor only.
2.All the tools of production, coatings are used in Germany, Switzerland,  processing equipment;

Coating:
Nano Coating AlTiN
Characteristics and Function
1、High aluminum content provides excellent hot hardness and oxidation resistance.
2、Special method optimizes the structure of coating,significantly improved stability,reducing the number of surface droplet.

Operation parameter:
External cooling drill operation parameter:
Workpeice material Cutting speed
 (m/min)
Feed rate(mm/rev)
 External cooling
 drill
D3 D4 D6 D8 D10 D12 D14 D16 D18 D20
Low carbon steel,long chip 
<125HB
100
80
50
0.09
0.13
0.16
0.11
0.15
0.19
0.14
0.19
0.23
0.19
0.25
0.31
0.23
0.30
0.38
0.24
0.33
0.41
0.28
0.38
0.45
0.30
0.42
0.50
0.33
0.42
0.50
0.34
0.43
0.51
Low carbon steel, short cut, 
easy cut steel

<125HB
100
75
50
0.09
0.13
0.16
0.11
0.15
0.19
0.14
0.19
0.23
0.19
0.25
0.31
0.23
0.30
0.38
0.24
0.33
0.41
0.28
0.38
0.45
0.30
0.42
0.50
0.33
0.42
0.50
0.34
0.43
0.51
High carbon steel 
and medium carbon steel

<25HRC
90
70
45
0.09
0.13
0.16
0.11
0.15
0.19
0.14
0.19
0.23
0.19
0.25
0.31
0.23
0.30
0.38
0.24
0.33
0.41
0.28
0.38
0.45
0.30
0.42
0.50
0.33
0.42
0.50
0.34
0.43
0.51
Alloy steel,tool steel
<35HRC
90
70
45
0.09
0.13
0.16
0.11
0.15
0.19
0.14
0.19
0.23
0.19
0.25
0.31
0.23
0.30
0.38
0.24
0.33
0.41
0.28
0.38
0.45
0.30
0.42
0.50
0.33
0.42
0.50
0.34
0.43
0.51
Alloy steel, tool steel
35-48HRC
80
60
40
0.09
0.12
0.14
0.10
0.14
0.17
0.13
0.17
0.22
0.17
0.23
0.29
0.21
0.28
0.35
0.22
0.30
0.37
0.26
0.35
0.41
0.28
0.37
0.44
0.31
0.38
0.46
0.31
0.39
0.47
PH and ferritic, martensitic steels
<35HRC
70
50
30
0.09
0.12
0.14
0.10
0.14
0.17
0.13
0.17
0.23
0.17
0.23
0.29
0.21
0.28
0.35
0.22
0.30
0.37
0.26
0.35
0.41
0.28
0.37
0.44
0.31
0.38
0.46
0.31
0.39
0.47
Austenitic stainless steel
130-200HB
  0.05
0.08
0.10
0.06
0.10
0.12
0.07
0.12
0.14
0.08
0.13
0.18
0.09
0.15
0.20
0.10
0.17
0.22
0.11
0.18
0.24
0.12
0.20
0.24
0.13
0.22
0.26
0.14
0.24
0.28
High strength austenitic 
and forged stainless steel

<25HRC
  0.03
0.06
0.08
0.04
0.08
0.10
0.05
0.08
0.10
0.06
0.10
0.12
0.07
0.11
0.14
0.08
0.13
0.16
0.09
0.13
0.18
0.10
0.14
0.18
0.10
0.14
0.20
0.12
0.16
0.22
Duplex stainless steel
<30HRC
  0.03
0.06
0.08
0.04
0.08
0.10
0.05
0.08
0.10
0.06
0.10
0.12
0.07
0.11
0.14
0.08
0.13
0.16
0.09
0.13
0.18
0.10
0.14
0.18
0.10
0.14
0.20
0.12
0.16
0.22
Gray iron
<32HRC
100
80
60
0.13
0.17
0.21
0.15
0.02
0.26
0.17
0.26
0.32
0.20
0.32
0.40
0.25
0.36
0.42
0.26
0.38
0.46
0.28
0.40
0.50
0.30
0.42
0.52
0.32
0.44
0.54
0.36
0.48
0.56
Alloy iron of medium 
processing difficulty, 
nodular cast iron

<28HRC
100
80
60
0.11
0.15
0.18
0.13
0.18
0.22
0.15
0.23
0.27
0.17
0.26
0.38
0.22
0.28
0.38
0.22
0.34
0.42
0.24
0.35
0.44
0.26
0.40
0.48
0.30
0.40
0.46
0.34
0.43
0.50
Intractable high alloy cast iron, 
nodular cast iron

<28HRC
90
70
60
0.06
0.09
0.11
0.08
0.10
0.13
0.10
0.13
0.16
0.13
0.17
0.21
0.15
0.20
0.26
0.17
0.22
0.28
0.19
0.26
0.31
0.20
0.27
0.33
0.23
0.28
0.34
0.23
0.29
0.35
Wrought aluminum alloy
Si<12%
  0.06
0.09
0.11
0.13
0.20
0.26
0.16
0.22
0.28
0.18
0.26
0.32
0.20
0.30
0.38
0.22
0.34
0.42
0.24
0.36
0.44
0.28
0.38
0.46
0.32
0.40
0.48
0.34
0.42
0.48
Cast aluminium alloy
Si<12%
  0.06
0.09
0.11
0.13
0.20
0.26
0.16
0.22
0.28
0.18
0.26
0.32
0.20
0.30
0.38
0.22
0.34
0.42
0.24
0.36
0.44
0.28
0.38
0.46
0.32
0.40
0.48
0.34
0.42
0.48
Cast aluminium alloy
Si>12%
  0.06
0.09
0.11
0.13
0.20
0.26
0.16
0.22
0.28
0.18
0.26
0.32
0.20
0.30
0.38
0.22
0.34
0.42
0.24
0.36
0.44
0.28
0.38
0.46
0.32
0.40
0.48
0.34
0.42
0.48
Copper, copper alloy
<200HB
  0.06
0.09
0.11
0.13
0.20
0.26
0.16
0.22
0.28
0.18
0.26
0.32
0.20
0.30
0.38
0.22
0.34
0.42
0.24
0.36
0.44
0.28
0.38
0.46
0.32
0.40
0.48
0.34
0.42
0.48

Attention:
  • Make sure work peice and machine are stable and use a precision holder, use hydraulic chucks, high qualitycollet chucks.
  • Make sure total indicated run-out(TIR) is less than 0.02mm.
  • The recommended cutting condition is suitable for apply water soluable.
  • If the tool size is not in the table. Please refer to the table closet to the blade diameter size selection of cutting parameters, adjust cutting parameters according to actual working conditions during processing.

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