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Sutton D151 Stub Drill Bit - CNC DIN1897 - Cobalt Steel - TiAlN
Sutton D151 Stub Drill Bit - CNC DIN1897 - Cobalt Steel - TiAlN
Sutton D151 Stub Drill Bit - CNC DIN1897 - Cobalt Steel - TiAlN
Sutton D151 Stub Drill Bit - CNC DIN1897 - Cobalt Steel - TiAlN

Sutton 1mm D151 CNC Stub Drill Bit - Metric - Cobalt TiAlN

$23.86
$23.86
Inc. GST

Available

The Sutton D151 is a CNC stub drill (designation NH) made from 5% cobalt high speed steel (HSS-Co) with a TiAlN coating. It has 40° right-hand helix flutes (R40), a 130° point (point form A on sizes up to 1.9 mm and form B from 2.0 to 2.9 mm) and a straight shank, d1 to h8, and is made to DIN 1897.

It is a high performance stub drill for materials up to 1200 N/mm². The point geometry is designed for high strength, the parabolic flute design for optimal chip transportation, and the TiAlN coating for longer tool life.

This range has 126 sizes from 1 to 20 mm, with flute lengths of 6 to 66 mm and overall lengths of 26 to 131 mm. Further sizes in the Sutton size table are available on request as special manufacture, subject to lead time.

Where this product is used

  • Shallow, rigid drilling on CNC machines and drill presses, where the short stub length keeps the drill stiff.
  • Materials up to 1200 N/mm².
  • Materials rated Optimal for this drill: non-alloy steels; precipitation-hardening stainless steel; grey cast iron; nodular cast iron; malleable cast iron; cast aluminium and magnesium alloys (up to 12% Si); aluminium and magnesium cast alloys over 12% Si; and chilled cast iron.
  • Also rated Effective: ferritic and martensitic stainless steels; austenitic stainless steel; duplex stainless steel; copper alloys, brass and bronze; and thermosetting and fibre-reinforced plastics.
  • Rated Optimal for some grades and Effective for others: low-alloy steels; and high-alloy and tool steels.
  • Hole depths up to 3 × Ø. Step feeding or pecking is required beyond 3 × Ø.

Finish

Titanium aluminium nitride (TiAlN) has a microhardness of 3300 HV and is stable to about 900 °C (1652 °F). It is used on abrasive and difficult-to-machine materials such as stainless steel, at higher speeds and feeds, and with reduced or no coolant.

Cutting speeds and feeds

Cutting speeds (Vc) and feed numbers for this drill come from the Sutton High Performance catalogue application guide, which lists 30 material groups for this drill. The guide prints Optimal ratings in bold and Effective ratings in regular type, and the table below keeps that split. The rpm and feed columns show what the speed and feed number work out to at Ø6 mm and Ø10 mm (speed in rpm = Vc × 1000 ÷ (π × Ø)). Treat these as starting values and adjust for the machine, set-up and coolant.

Material (VDI 3323 group) Rating Vc (m/min) Feed no. Ø6 mm: rpm / feed Ø10 mm: rpm / feed
Non-alloy steel, about 0.15 %C, annealed (125 HB) Optimal 40 6 2,120 rpm / 0.16 mm/rev 1,270 rpm / 0.24 mm/rev
Non-alloy steel, about 0.45 %C, annealed (190 HB) Optimal 30 6 1,590 rpm / 0.16 mm/rev 955 rpm / 0.24 mm/rev
Non-alloy steel, about 0.45 %C, quenched and tempered (250 HB) Optimal 30 6 1,590 rpm / 0.16 mm/rev 955 rpm / 0.24 mm/rev
Non-alloy steel, about 0.75 %C, annealed (270 HB) Optimal 30 6 1,590 rpm / 0.16 mm/rev 955 rpm / 0.24 mm/rev
Non-alloy steel, about 0.75 %C, quenched and tempered (300 HB) Optimal 15 4 795 rpm / 0.1 mm/rev 475 rpm / 0.16 mm/rev
Low-alloy and cast steel (under 5% alloying), annealed (180 HB) Optimal 30 6 1,590 rpm / 0.16 mm/rev 955 rpm / 0.24 mm/rev
Low-alloy steel, quenched and tempered (275 HB) Optimal 20 5 1,060 rpm / 0.12 mm/rev 635 rpm / 0.19 mm/rev
Low-alloy steel, quenched and tempered (300 HB) Optimal 15 4 795 rpm / 0.1 mm/rev 475 rpm / 0.16 mm/rev
Low-alloy steel, quenched and tempered (350 HB) Effective 12 4 635 rpm / 0.1 mm/rev 380 rpm / 0.16 mm/rev
High-alloy, cast and tool steel, annealed (200 HB) Optimal 15 4 795 rpm / 0.1 mm/rev 475 rpm / 0.16 mm/rev
High-alloy, cast and tool steel, hardened and tempered (325 HB) Effective 12 4 635 rpm / 0.1 mm/rev 380 rpm / 0.16 mm/rev
Corrosion-resistant steel, ferritic / martensitic, annealed (200 HB) Effective 20 4 1,060 rpm / 0.1 mm/rev 635 rpm / 0.16 mm/rev
Corrosion-resistant steel, martensitic, quenched and tempered (240 HB) Effective 12 4 635 rpm / 0.1 mm/rev 380 rpm / 0.16 mm/rev
Austenitic stainless steel, age hardened (180 HB) Effective 20 5 1,060 rpm / 0.12 mm/rev 635 rpm / 0.19 mm/rev
Duplex stainless steel (250 HB) Effective 15 5 795 rpm / 0.12 mm/rev 475 rpm / 0.19 mm/rev
Precipitation-hardening stainless steel (250 HB) Optimal 20 4 1,060 rpm / 0.1 mm/rev 635 rpm / 0.16 mm/rev
Grey cast iron, ferritic / pearlitic (180 HB) Optimal 30 6 1,590 rpm / 0.16 mm/rev 955 rpm / 0.24 mm/rev
Grey cast iron, pearlitic (260 HB) Optimal 25 6 1,330 rpm / 0.16 mm/rev 795 rpm / 0.24 mm/rev
Nodular cast iron, ferritic (160 HB) Optimal 25 6 1,330 rpm / 0.16 mm/rev 795 rpm / 0.24 mm/rev
Nodular cast iron, pearlitic (250 HB) Optimal 25 6 1,330 rpm / 0.16 mm/rev 795 rpm / 0.24 mm/rev
Malleable cast iron, ferritic (130 HB) Optimal 25 6 1,330 rpm / 0.16 mm/rev 795 rpm / 0.24 mm/rev
Malleable cast iron, pearlitic (230 HB) Optimal 25 6 1,330 rpm / 0.16 mm/rev 795 rpm / 0.24 mm/rev
Cast aluminium and magnesium alloy (up to 12% Si), non heat treatable (75 HB) Optimal 40 5 2,120 rpm / 0.12 mm/rev 1,270 rpm / 0.19 mm/rev
Cast aluminium and magnesium alloy (up to 12% Si), heat treatable (90 HB) Optimal 40 5 2,120 rpm / 0.12 mm/rev 1,270 rpm / 0.19 mm/rev
Aluminium and magnesium cast alloy over 12% Si (130 HB) Optimal 30 7 1,590 rpm / 0.19 mm/rev 955 rpm / 0.3 mm/rev
Copper alloys, free cutting, Pb over 1% (110 HB) Effective 60 5 3,180 rpm / 0.12 mm/rev 1,910 rpm / 0.19 mm/rev
Brass (CuZn, CuSnZn) (90 HB) Effective 40 5 2,120 rpm / 0.12 mm/rev 1,270 rpm / 0.19 mm/rev
Bronze (CuSn) (100 HB) Effective 30 5 1,590 rpm / 0.12 mm/rev 955 rpm / 0.19 mm/rev
Thermosetting and fibre-reinforced plastics Effective 50 4 2,650 rpm / 0.1 mm/rev 1,590 rpm / 0.16 mm/rev
Chilled cast iron (400 HB) Optimal 25 6 1,330 rpm / 0.16 mm/rev 795 rpm / 0.24 mm/rev

Feed rates (mm/rev) for the feed numbers above:

Ø (mm) Feed no. 4 (mm/rev) Feed no. 5 (mm/rev) Feed no. 6 (mm/rev) Feed no. 7 (mm/rev)
2 0.04 0.05 0.06 0.075
3 0.055 0.07 0.09 0.11
4 0.075 0.09 0.12 0.14
5 0.09 0.11 0.14 0.17
6 0.1 0.12 0.16 0.19
8 0.13 0.16 0.2 0.25
10 0.16 0.19 0.24 0.3
12 0.18 0.23 0.28 0.34
16 0.23 0.29 0.36 0.44
20 0.28 0.34 0.42 0.52
25 0.33 0.41 0.5 0.6

Sizes and item numbers

Every size in the range, with its Sutton item number, flute length (l2) and overall length (l1).

Item no. Diameter d1 (mm) Flute length l2 (mm) Overall length l1 (mm) Point
D151 0100 1 6 26 Form A
D151 0110 1.1 7 28 Form A
D151 0120 1.2 8 30 Form A
D151 0130 1.3 8 30 Form A
D151 0140 1.4 9 32 Form A
D151 0150 1.5 9 32 Form A
D151 0160 1.6 10 34 Form A
D151 0170 1.7 10 34 Form A
D151 0180 1.8 11 36 Form A
D151 0190 1.9 11 36 Form A
D151 0200 2 12 38 Form B
D151 0210 2.1 13 40 Form B
D151 0220 2.2 13 40 Form B
D151 0230 2.3 13 40 Form B
D151 0240 2.4 14 43 Form B
D151 0250 2.5 14 43 Form B
D151 0260 2.6 14 43 Form B
D151 0270 2.7 16 46 Form B
D151 0280 2.8 16 46 Form B
D151 0290 2.9 16 46 Form B
D151 0300 3 16 46 130°
D151 0310 3.1 18 49 130°
D151 0320 3.2 18 49 130°
D151 0330 3.3 18 49 130°
D151 0340 3.4 20 52 130°
D151 0350 3.5 20 52 130°
D151 0360 3.6 20 52 130°
D151 0370 3.7 20 52 130°
D151 0380 3.8 22 55 130°
D151 0390 3.9 22 55 130°
D151 0400 4 22 55 130°
D151 0410 4.1 22 55 130°
D151 0420 4.2 22 55 130°
D151 0430 4.3 24 58 130°
D151 0440 4.4 24 58 130°
D151 0450 4.5 24 58 130°
D151 0460 4.6 24 58 130°
D151 0470 4.7 24 58 130°
D151 0480 4.8 26 62 130°
D151 0490 4.9 26 62 130°
D151 0500 5 26 62 130°
D151 0510 5.1 26 62 130°
D151 0520 5.2 26 62 130°
D151 0530 5.3 26 62 130°
D151 0540 5.4 28 66 130°
D151 0550 5.5 28 66 130°
D151 0560 5.6 28 66 130°
D151 0570 5.7 28 66 130°
D151 0580 5.8 28 66 130°
D151 0590 5.9 28 66 130°
D151 0600 6 28 66 130°
D151 0610 6.1 31 70 130°
D151 0620 6.2 31 70 130°
D151 0630 6.3 31 70 130°
D151 0640 6.4 31 70 130°
D151 0650 6.5 31 70 130°
D151 0660 6.6 31 70 130°
D151 0670 6.7 31 70 130°
D151 0680 6.8 34 74 130°
D151 0690 6.9 34 74 130°
D151 0700 7 34 74 130°
D151 0710 7.1 34 74 130°
D151 0720 7.2 34 74 130°
D151 0730 7.3 34 74 130°
D151 0740 7.4 34 74 130°
D151 0750 7.5 34 74 130°
D151 0760 7.6 37 79 130°
D151 0770 7.7 37 79 130°
D151 0780 7.8 37 79 130°
D151 0790 7.9 37 79 130°
D151 0800 8 37 79 130°
D151 0810 8.1 37 79 130°
D151 0820 8.2 37 79 130°
D151 0830 8.3 37 79 130°
D151 0840 8.4 37 79 130°
D151 0850 8.5 37 79 130°
D151 0860 8.6 40 84 130°
D151 0870 8.7 40 84 130°
D151 0880 8.8 40 84 130°
D151 0890 8.9 40 84 130°
D151 0900 9 40 84 130°
D151 0910 9.1 40 84 130°
D151 0920 9.2 40 84 130°
D151 0930 9.3 40 84 130°
D151 0940 9.4 40 84 130°
D151 0950 9.5 40 84 130°
D151 0960 9.6 43 89 130°
D151 0970 9.7 43 89 130°
D151 0980 9.8 43 89 130°
D151 0990 9.9 43 89 130°
D151 1000 10 43 89 130°
D151 1020 10.2 43 89 130°
D151 1030 10.3 43 89 130°
D151 1040 10.4 43 89 130°
D151 1050 10.5 43 89 130°
D151 1060 10.6 47 95 130°
D151 1070 10.7 47 95 130°
D151 1080 10.8 47 95 130°
D151 1090 10.9 47 95 130°
D151 1100 11 47 95 130°
D151 1110 11.1 47 95 130°
D151 1130 11.3 47 95 130°
D151 1140 11.4 47 95 130°
D151 1150 11.5 47 95 130°
D151 1180 11.8 47 95 130°
D151 1200 12 51 102 130°
D151 1220 12.2 51 102 130°
D151 1250 12.5 51 102 130°
D151 1270 12.7 51 102 130°
D151 1280 12.8 51 102 130°
D151 1290 12.9 51 102 130°
D151 1300 13 51 102 130°
D151 1350 13.5 54 107 130°
D151 1400 14 54 107 130°
D151 1450 14.5 56 111 130°
D151 1500 15 56 111 130°
D151 1550 15.5 58 115 130°
D151 1600 16 58 115 130°
D151 1650 16.5 60 119 130°
D151 1700 17 60 119 130°
D151 1750 17.5 62 123 130°
D151 1800 18 62 123 130°
D151 1850 18.5 64 127 130°
D151 1900 19 64 127 130°
D151 1950 19.5 66 131 130°
D151 2000 20 66 131 130°

Drilling notes

  • Step feeding or pecking is required for drilling greater than 3 x Ø.
  • When drilling a cast or black (not machined) surface, reduce the drilling speed by 20%.
  • For optimal positional accuracy and hole size, use a spot drill before drilling the hole; the Sutton D175 and D176 spotting drills are made for this.
  • For hole depths greater than 7 x Ø, pre-drill a pilot hole first for more accurate hole position and to stop the drill wandering. The pilot can be drilled with a short, rigid drill about 3 x Ø deep at reduced feed.

Accuracy

The size table gives the drill diameter (d1) tolerance as h8. An h8 drill diameter may be at nominal or smaller, never larger.

Drill diameter (mm) h8 tolerance (minus only, ISO 286-2)
0.2 to 3 14 µm
3 to 6 18 µm
6 to 10 22 µm
10 to 18 27 µm
18 to 30 33 µm
30 to 50 39 µm

Troubleshooting

  • Drill breaks. Dull point: sharpen; Drill has front taper due to wearing: sharpen; Insufficient lip clearance on point: grind correctly; Lip clearance too great: regrind to correct clearance angle.
  • Outer corner breaks down. Flutes clogged with chips: remove drill from hole and clear the flutes; Cutting speed too high: reduce speed; Dry cutting, no lubricant at cutting edges: apply cutting fluid.
  • Cutting edges chip. Lip clearance too great: regrind to correct clearance angle; Feed too heavy: reduce feed.
  • Hole rough. Dull point: sharpen; Feed too heavy: reduce feed; Dry cutting, no lubricant at cutting edges: apply cutting fluid; Fixture/clamping not rigid: secure job firmly.
  • Hole oversize. Unequal angle or uneven length of cutting edges: regrind to same lip lengths and angles; Spindle run-out / loose spindle: check machine.

Key specifications

Specification Detail
Catalogue code D151 (CNC Stub Drill)
Material High Speed Steel Cobalt (HSS Co, 5% cobalt)
Finish Titanium aluminium nitride (TiAlN)
Flute geometry 40° right-hand helix (R40)
Point 130° point (point form A on sizes up to 1.9 mm and form B from 2.0 to 2.9 mm)
Shank Straight shank, d1 to h8
Standard DIN 1897
Drill diameter tolerance (d1) h8
Designation NH
Drilling depth up to 3 × Ø
Sizes in this range 126 sizes, 1-20mm

Related drilling products

Compare other Sutton drills: D177 DXS stub, D155 R40 UNI SPM stub, D153 Black Magic stub, D186 Blue Bullet stub and D163 DHJ jobber. Browse all Stub Drill Bits. Need help choosing? Our guide to choosing the right drill bit and drill bit selection guide cover drill types and materials, and the speeds and feeds chart and cutting tool troubleshooting guide cover speeds and common problems.
Product Highlights −

The Sutton D151 is a CNC stub drill (designation NH) made from 5% cobalt high speed steel (HSS-Co) with a TiAlN coating. It has 40° right-hand helix flutes (R40), a 130° point (point form A on sizes up to 1.9 mm and form B from 2.0 to 2.9 mm) and a straight shank, d1 to h8, and is made to DIN 1897.

It is a high performance stub drill for materials up to 1200 N/mm². The point geometry is designed for high strength, the parabolic flute design for optimal chip transportation, and the TiAlN coating for longer tool life. This range has 126 sizes from 1 to 20 mm, with flute lengths of 6 to 66 mm and overall lengths of 26 to 131 mm. Further sizes in the Sutton size table are available on request as special manufacture, subject to lead time.

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