Sutton 3mm D329 3xD IK Carbide Drill Bit - Metric - VHM
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The Sutton D329 is a 3 × Ø through-coolant solid carbide drill with an AlCrN coating. It has 30° right-hand helix flutes (R30, internal coolant), a 140° Form C point and a DIN 6535 HA shank, d2 to h6. It is made to DIN 6537.
Suitable for materials up to 1400 N/mm²; micro geometry and surface conditioning for optimal chip control; AlCrN for maximum tool life. The IK designation marks the internal-coolant version of the drill.
This is the metric range: 135 sizes from 3 to 20 mm, with flute lengths of 20 to 79 mm and overall lengths of 62 to 131 mm.
Where this product is used
- Production drilling in materials up to 1400 N/mm², the limit for this carbide drill.
- Materials rated Optimal for this drill: non-alloy steels; low-alloy steels; high-alloy and tool steels; precipitation-hardening stainless steel; grey cast iron; nodular cast iron; malleable cast iron; hardened steel (45 to 62 HRC); and chilled and hardened cast iron.
- Also rated Effective: austenitic stainless steel; duplex stainless steel; aluminium and magnesium cast alloys over 12% Si; copper alloys, brass and bronze; Fe-based high-temperature alloys; Ni / Co based high-temperature alloys; and titanium and titanium alloys.
- Rated Optimal for some grades and Effective for others: ferritic and martensitic stainless steels.
- Hole depths to 3 × Ø. Step feeding or pecking is required beyond 3 × Ø.
Finish
Aluminium chromium nitride (AlCrN). AlCrN has a microhardness of 3200 HV and thermal stability up to about 1100 °C (2012 °F), and is used for low-alloy and high-tensile steels, hardened steels up to 54 HRC, high-speed machining and use with minimum quantity lubrication (MQL) and dry machining.
Cutting speeds and feeds
Cutting speeds (Vc) and feed numbers for this drill are from the Sutton High Performance catalogue application guide. The table lists the material groups covered. Optimal ratings are shown in bold and Effective ratings in regular type. 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 | 130 | 8 | 6,900 rpm / 0.24 mm/rev | 4,140 rpm / 0.37 mm/rev |
| Non-alloy steel, about 0.45 %C, annealed (190 HB) | Optimal | 130 | 8 | 6,900 rpm / 0.24 mm/rev | 4,140 rpm / 0.37 mm/rev |
| Non-alloy steel, about 0.45 %C, quenched and tempered (250 HB) | Optimal | 110 | 8 | 5,840 rpm / 0.24 mm/rev | 3,500 rpm / 0.37 mm/rev |
| Non-alloy steel, about 0.75 %C, annealed (270 HB) | Optimal | 110 | 8 | 5,840 rpm / 0.24 mm/rev | 3,500 rpm / 0.37 mm/rev |
| Non-alloy steel, about 0.75 %C, quenched and tempered (300 HB) | Optimal | 70 | 6 | 3,710 rpm / 0.16 mm/rev | 2,230 rpm / 0.24 mm/rev |
| Low-alloy and cast steel (under 5% alloying), annealed (180 HB) | Optimal | 110 | 8 | 5,840 rpm / 0.24 mm/rev | 3,500 rpm / 0.37 mm/rev |
| Low-alloy steel, quenched and tempered (275 HB) | Optimal | 80 | 7 | 4,240 rpm / 0.19 mm/rev | 2,550 rpm / 0.3 mm/rev |
| Low-alloy steel, quenched and tempered (300 HB) | Optimal | 70 | 6 | 3,710 rpm / 0.16 mm/rev | 2,230 rpm / 0.24 mm/rev |
| Low-alloy steel, quenched and tempered (350 HB) | Optimal | 35 | 5 | 1,860 rpm / 0.12 mm/rev | 1,110 rpm / 0.19 mm/rev |
| High-alloy, cast and tool steel, annealed (200 HB) | Optimal | 70 | 6 | 3,710 rpm / 0.16 mm/rev | 2,230 rpm / 0.24 mm/rev |
| High-alloy, cast and tool steel, hardened and tempered (325 HB) | Optimal | 35 | 5 | 1,860 rpm / 0.12 mm/rev | 1,110 rpm / 0.19 mm/rev |
| Corrosion-resistant steel, ferritic / martensitic, annealed (200 HB) | Effective | 30 | 4 | 1,590 rpm / 0.1 mm/rev | 955 rpm / 0.16 mm/rev |
| Corrosion-resistant steel, martensitic, quenched and tempered (240 HB) | Optimal | 35 | 5 | 1,860 rpm / 0.12 mm/rev | 1,110 rpm / 0.19 mm/rev |
| Austenitic stainless steel, age hardened (180 HB) | Effective | 50 | 5 | 2,650 rpm / 0.12 mm/rev | 1,590 rpm / 0.19 mm/rev |
| Duplex stainless steel (250 HB) | Effective | 40 | 4 | 2,120 rpm / 0.1 mm/rev | 1,270 rpm / 0.16 mm/rev |
| Precipitation-hardening stainless steel (250 HB) | Optimal | 30 | 4 | 1,590 rpm / 0.1 mm/rev | 955 rpm / 0.16 mm/rev |
| Grey cast iron, ferritic / pearlitic (180 HB) | Optimal | 150 | 9 | 7,960 rpm / 0.3 mm/rev | 4,770 rpm / 0.46 mm/rev |
| Grey cast iron, pearlitic (260 HB) | Optimal | 120 | 8 | 6,370 rpm / 0.24 mm/rev | 3,820 rpm / 0.37 mm/rev |
| Nodular cast iron, ferritic (160 HB) | Optimal | 100 | 8 | 5,310 rpm / 0.24 mm/rev | 3,180 rpm / 0.37 mm/rev |
| Nodular cast iron, pearlitic (250 HB) | Optimal | 100 | 8 | 5,310 rpm / 0.24 mm/rev | 3,180 rpm / 0.37 mm/rev |
| Malleable cast iron, ferritic (130 HB) | Optimal | 100 | 8 | 5,310 rpm / 0.24 mm/rev | 3,180 rpm / 0.37 mm/rev |
| Malleable cast iron, pearlitic (230 HB) | Optimal | 100 | 8 | 5,310 rpm / 0.24 mm/rev | 3,180 rpm / 0.37 mm/rev |
| Aluminium and magnesium cast alloy over 12% Si (130 HB) | Effective | 200 | 7 | 10,610 rpm / 0.19 mm/rev | 6,370 rpm / 0.3 mm/rev |
| Copper alloys, free cutting, Pb over 1% (110 HB) | Effective | 200 | 7 | 10,610 rpm / 0.19 mm/rev | 6,370 rpm / 0.3 mm/rev |
| Brass (CuZn, CuSnZn) (90 HB) | Effective | 200 | 7 | 10,610 rpm / 0.19 mm/rev | 6,370 rpm / 0.3 mm/rev |
| Bronze (CuSn) (100 HB) | Effective | 200 | 7 | 10,610 rpm / 0.19 mm/rev | 6,370 rpm / 0.3 mm/rev |
| High-temperature alloy, Fe based, annealed (200 HB) | Effective | 35 | 4 | 1,860 rpm / 0.1 mm/rev | 1,110 rpm / 0.16 mm/rev |
| High-temperature alloy, Fe based, age hardened (280 HB) | Effective | 30 | 4 | 1,590 rpm / 0.1 mm/rev | 955 rpm / 0.16 mm/rev |
| High-temperature alloy, Ni / Co based, annealed (250 HB) | Effective | 35 | 4 | 1,860 rpm / 0.1 mm/rev | 1,110 rpm / 0.16 mm/rev |
| High-temperature alloy, Ni / Co based, age hardened (350 HB) | Effective | 30 | 4 | 1,590 rpm / 0.1 mm/rev | 955 rpm / 0.16 mm/rev |
| High-temperature alloy, Ni / Co based, cast (320 HB) | Effective | 30 | 4 | 1,590 rpm / 0.1 mm/rev | 955 rpm / 0.16 mm/rev |
| Titanium, commercially pure (400 MPa) | Effective | 45 | 5 | 2,390 rpm / 0.12 mm/rev | 1,430 rpm / 0.19 mm/rev |
| Titanium alpha alloys (860 MPa) | Effective | 40 | 4 | 2,120 rpm / 0.1 mm/rev | 1,270 rpm / 0.16 mm/rev |
| Titanium alpha / beta alloys, annealed (960 MPa) | Effective | 40 | 4 | 2,120 rpm / 0.1 mm/rev | 1,270 rpm / 0.16 mm/rev |
| Titanium alpha / beta alloys, age hardened (1170 MPa) | Effective | 35 | 4 | 1,860 rpm / 0.1 mm/rev | 1,110 rpm / 0.16 mm/rev |
| Titanium beta alloys, annealed (830 MPa) | Effective | 40 | 4 | 2,120 rpm / 0.1 mm/rev | 1,270 rpm / 0.16 mm/rev |
| Titanium beta alloys, age hardened (1400 MPa) | Effective | 35 | 4 | 1,860 rpm / 0.1 mm/rev | 1,110 rpm / 0.16 mm/rev |
| Hardened steel, 45 HRC | Optimal | 25 | 4 | 1,330 rpm / 0.1 mm/rev | 795 rpm / 0.16 mm/rev |
| Chilled cast iron (400 HB) | Optimal | 120 | 8 | 6,370 rpm / 0.24 mm/rev | 3,820 rpm / 0.37 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) | Feed no. 8 (mm/rev) | Feed no. 9 (mm/rev) |
|---|---|---|---|---|---|---|
| 2 | 0.04 | 0.05 | 0.06 | 0.075 | 0.095 | 0.12 |
| 3 | 0.055 | 0.07 | 0.09 | 0.11 | 0.14 | 0.17 |
| 4 | 0.075 | 0.09 | 0.12 | 0.14 | 0.18 | 0.22 |
| 5 | 0.09 | 0.11 | 0.14 | 0.17 | 0.21 | 0.26 |
| 6 | 0.1 | 0.12 | 0.16 | 0.19 | 0.24 | 0.3 |
| 8 | 0.13 | 0.16 | 0.2 | 0.25 | 0.31 | 0.38 |
| 10 | 0.16 | 0.19 | 0.24 | 0.3 | 0.37 | 0.46 |
| 12 | 0.18 | 0.23 | 0.28 | 0.34 | 0.42 | 0.52 |
| 16 | 0.23 | 0.29 | 0.36 | 0.44 | 0.54 | 0.66 |
| 20 | 0.28 | 0.34 | 0.42 | 0.52 | 0.64 | 0.8 |
| 25 | 0.33 | 0.41 | 0.5 | 0.6 | 0.74 | 0.9 |
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, the use of spot drills is recommended prior to drilling the desired hole; see Sutton's spotting drill range (D175).
- 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 drill diameter (d1) tolerance is m7 and the shank tolerance is h6.
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | D329 |
| Range | 3xD IK Carbide Drill |
| Material | Solid carbide (VHM) |
| Finish | Aluminium chromium nitride (AlCrN) |
| Flute geometry | 30° right-hand helix (R30 - IK) |
| Point | 140° Form C |
| Shank | DIN 6535 HA shank, d2 to h6 |
| Standard | DIN 6537 |
| Drill diameter tolerance (d1) | m7 |
| Shank tolerance | h6 |
| Designation | N |
| Drilling depth | up to 3 × Ø |
| Sizes in this range | 135 sizes, 3-20mm |
Related drilling products
Compare other Sutton drills: D323 3xD carbide, D332 5xD through-coolant carbide, D356 Black Magic 3xD and D326 5xD carbide. Browse all Carbide 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.
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