Solid Carbide Drill

D50 Series

5xD, external coolant

Technical specifications
Product group	Solid Carbide Drill
Diameter range	Ø3 - Ø20
Number of flutes (Z)	2
Coating	AlTiN

See the product catalogue for dimension tables and order codes. Contact our technical team for special dimensions and tolerances.

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Dimensions and order codes ↓

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D50 Series · 146

Dimensions and order codes

Values are taken from the table in the Geppetto product catalogue; dimensions in mm. For a quotation, send the order code and quantity.

Scroll the table sideways ↔

Catalogue page 99, 100, 101, 102, 103, 104
Order code	d₁ m7	l₁	l₂	l₃	d₂ h6
D50-0300-AT	3	66	28	23	6
D50-0310-AT	3.1	66	28	23	6
D50-0320-AT	3.2	66	28	23	6
D50-0330-AT	3.3	66	28	23	6
D50-0340-AT	3.4	66	28	23	6
D50-0350-AT	3.5	66	28	23	6
D50-0360-AT	3.6	66	28	23	6
D50-0365-AT	3.65	66	28	23	6
D50-0370-AT	3.7	66	28	23	6
D50-0380-AT	3.8	74	36	29	6
D50-0390-AT	3.9	74	36	29	6
D50-0400-AT	4	74	36	29	6
D50-0410-AT	4.1	74	36	29	6
D50-0420-AT	4.2	74	36	29	6
D50-0430-AT	4.3	74	36	29	6
D50-0440-AT	4.4	74	36	29	6
D50-0450-AT	4.5	74	36	29	6
D50-0460-AT	4.6	74	36	29	6
D50-0470-AT	4.7	74	36	29	6
D50-0480-AT	4.8	82	44	35	6
D50-0490-AT	4.9	82	44	35	6
D50-0500-AT	5	82	44	35	6
D50-0510-AT	5.1	82	44	35	6
D50-0520-AT	5.2	82	44	35	6
D50-0530-AT	5.3	82	44	35	6
D50-0540-AT	5.4	82	44	35	6
D50-0550-AT	5.5	82	44	35	6
D50-0555-AT	5.55	82	44	35	6
D50-0560-AT	5.6	82	44	35	6
D50-0565-AT	5.65	82	44	35	6
D50-0570-AT	5.7	82	44	35	6
D50-0580-AT	5.8	82	44	35	6
D50-0590-AT	5.9	82	44	35	6
D50-0600-AT	6	82	44	35	6
D50-0610-AT	6.1	91	53	43	8
D50-0620-AT	6.2	91	53	43	8
D50-0630-AT	6.3	91	53	43	8
D50-0640-AT	6.4	91	53	43	8
D50-0650-AT	6.5	91	53	43	8
D50-0660-AT	6.6	91	53	43	8
D50-0670-AT	6.7	91	53	43	8
D50-0680-AT	6.8	91	53	43	8
D50-0690-AT	6.9	91	53	43	8
D50-0700-AT	7	91	53	43	8
D50-0710-AT	7.1	91	53	43	8
D50-0720-AT	7.2	91	53	43	8
D50-0730-AT	7.3	91	53	43	8
D50-0740-AT	7.4	91	53	43	8
D50-0750-AT	7.5	91	53	43	8
D50-0755-AT	7.55	91	53	43	8
D50-0760-AT	7.6	91	53	43	8
D50-0770-AT	7.7	91	53	43	8
D50-0780-AT	7.8	91	53	43	8
D50-0790-AT	7.9	91	53	43	8
D50-0800-AT	8	91	53	43	8
D50-0810-AT	8.1	103	61	49	10
D50-0820-AT	8.2	103	61	49	10
D50-0830-AT	8.3	103	61	49	10
D50-0840-AT	8.4	103	61	49	10
D50-0850-AT	8.5	103	61	49	10
D50-0860-AT	8.6	103	61	49	10
D50-0870-AT	8.7	103	61	49	10
D50-0880-AT	8.8	103	61	49	10
D50-0890-AT	8.9	103	61	49	10
D50-0900-AT	9	103	61	49	10
D50-0910-AT	9.1	103	61	49	10
D50-0920-AT	9.2	103	61	49	10
D50-0930-AT	9.3	103	61	49	10
D50-0940-AT	9.4	103	61	49	10
D50-0950-AT	9.5	103	61	49	10
D50-0955-AT	9.55	103	61	49	10
D50-0960-AT	9.6	103	61	49	10
D50-0970-AT	9.7	103	61	49	10
D50-0980-AT	9.8	103	61	49	10
D50-0990-AT	9.9	103	61	49	10
D50-1000-AT	10	103	61	49	10
D50-1010-AT	10.1	118	71	56	12
D50-1020-AT	10.2	118	71	56	12
D50-1030-AT	10.3	118	71	56	12
D50-1040-AT	10.4	118	71	56	12
D50-1050-AT	10.5	118	71	56	12
D50-1060-AT	10.6	118	71	56	12
D50-1070-AT	10.7	118	71	56	12
D50-1080-AT	10.8	118	71	56	12
D50-1090-AT	10.9	118	71	56	12
D50-1100-AT	11	118	71	56	12
D50-1110-AT	11.1	118	71	56	12
D50-1120-AT	11.2	118	71	56	12
D50-1130-AT	11.3	118	71	56	12
D50-1140-AT	11.4	118	71	56	12
D50-1150-AT	11.5	118	71	56	12
D50-1155-AT	11.55	118	71	56	12
D50-1160-AT	11.6	118	71	56	12
D50-1170-AT	11.7	118	71	56	12
D50-1180-AT	11.8	118	71	56	12
D50-1190-AT	11.9	118	71	56	12
D50-1200-AT	12	118	71	56	12
D50-1210-AT	12.1	124	77	60	14
D50-1220-AT	12.2	124	77	60	14
D50-1230-AT	12.3	124	77	60	14
D50-1240-AT	12.4	124	77	60	14
D50-1250-AT	12.5	124	77	60	14
D50-1260-AT	12.6	124	77	60	14
D50-1270-AT	12.7	124	77	60	14
D50-1280-AT	12.8	124	77	60	14
D50-1290-AT	12.9	124	77	60	14
D50-1300-AT	13	124	77	60	14
D50-1310-AT	13.1	124	77	60	14
D50-1320-AT	13.2	124	77	60	14
D50-1330-AT	13.3	124	77	60	14
D50-1340-AT	13.4	124	77	60	14
D50-1350-AT	13.5	124	77	60	14
D50-1360-AT	13.6	124	77	60	14
D50-1370-AT	13.7	124	77	60	14
D50-1380-AT	13.8	124	77	60	14
D50-1390-AT	13.9	124	77	60	14
D50-1400-AT	14	124	77	60	14
D50-1410-AT	14.1	133	83	63	16
D50-1420-AT	14.2	133	83	63	16
D50-1430-AT	14.3	133	83	63	16
D50-1440-AT	14.4	133	83	63	16
D50-1450-AT	14.5	133	83	63	16
D50-1460-AT	14.6	133	83	63	16
D50-1470-AT	14.7	133	83	63	16
D50-1480-AT	14.8	133	83	63	16
D50-1490-AT	14.9	133	83	63	16
D50-1500-AT	15	133	83	63	16
D50-1510-AT	15.1	133	83	63	16
D50-1520-AT	15.2	133	83	63	16
D50-1530-AT	15.3	133	83	63	16
D50-1540-AT	15.4	133	83	63	16
D50-1550-AT	15.5	133	83	63	16
D50-1560-AT	15.6	133	83	63	16
D50-1570-AT	15.7	133	83	63	16
D50-1580-AT	15.8	133	83	63	16
D50-1590-AT	15.9	133	83	63	16
D50-1600-AT	16	133	83	63	16
D50-1650-AT	16.5	143	93	71	18
D50-1700-AT	17	143	93	71	18
D50-1750-AT	17.5	143	93	71	18
D50-1800-AT	18	143	93	71	18
D50-1850-AT	18.5	153	101	77	20
D50-1880-AT	18.8	153	101	77	20
D50-1900-AT	19	153	101	77	20
D50-1950-AT	19.5	153	101	77	20
D50-2000-AT	20	153	101	77	20

Symbols, tolerances and order codes: Technical Guide →

D50 Series

Cutting data, materials and coating

Suitable workpiece materials

ISO P · Steel
ISO M · Stainless
ISO K · Cast iron
ISO N · Aluminium
ISO S · Heat-resistant

Coating

AlTiN (high heat resistance)

Recommended cutting data ranges

Source: Geppetto Product Catalogue 2026, p. 149 · Catalogue table: Ø3–20 mm.
ISO group	Vc (m/min)	fn (mm/rev)
Steel	10–145	0.008–0.44
Stainless	25–85	0.04–0.38
Cast iron	35–90	0.06–0.55
Aluminium	70–300	0.07–0.5
Heat-resistant	5–30	0.02–0.5

Values are starting recommendations; adjust them to machine rigidity, clamping, tool length and coolant.

Calculate n and Vf for your diameter →

Frequently asked questions

Which materials is D50 Series suitable for?

D50 Series is used in ISO material groups P/M/K/N/S: Steel, Stainless, Cast iron, Aluminium, Heat-resistant.

Which diameters and flute counts does D50 Series come in?

D50 Series is available in Ø3 - Ø20 with Z2 flutes. Other sizes can be made to drawing.

Which coating does D50 Series have?

D50 Series coating: AlTiN (high heat resistance).

What are the recommended cutting speed and feed for D50 Series?

Geppetto Product Catalogue 2026 (p. 149): ISO P: Vc 10–145 m/min, fn 0.008–0.44 mm/rev; ISO M: Vc 25–85 m/min, fn 0.04–0.38 mm/rev; ISO K: Vc 35–90 m/min, fn 0.06–0.55 mm/rev; ISO N: Vc 70–300 m/min, fn 0.07–0.5 mm/rev; ISO S: Vc 5–30 m/min, fn 0.02–0.5 mm/rev. These are starting values; use the calculator to get spindle speed and feed for your diameter.

Can D50 Series be reground?

Yes. Geppetto offers CNC regrinding, Drag Finish edge preparation and PVD recoating for carbide end mills, drills and reamers.