Literal statement:
HJDK550 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.

Regular size:

Carbide Drills

Ordering code	Outside Diameter	Flute Length	Overall Length	Shank Diameter
	(D)	(l)	(L)	（D）
HJDK550-005S	0.5	6	26	0.5
HJDK550-006S	0.6	6	26	0.6
HJDK550-007S	0.7	6	26	0.7
HJDK550-008S	0.8	6	26	0.8
HJDK550-009S	0.9	6	26	0.9
HJDK550-0100S	1	6	26	1
HJDK550-011S	1.1	7	28	1.1
HJDK550-012S	1.2	8	30	1.2
HJDK550-013S	1.3	8	30	1.3
HJDK550-014S	1.4	9	32	1.4
HJDK550-015S	1.5	9	32	1.5
HJDK550-016S	1.6	10	34	1.6
HJDK550-017S	1.7	10	34	1.7
HJDK550-018S	1.8	11	36	1.8
HJDK550-019S	1.9	11	36	1.9
HJDK550-020S	2	12	38	2
HJDK550-021S	2.1	12	38	3
HJDK550-022S	2.2	13	40	3
HJDK550-023S	2.3	13	40	3
HJDK550-024S	2.4	14	43	3
HJDK550-025S	2.5	14	43	3
HJDK550-026S	2.6	14	43	3
HJDK550-027S	2.7	16	46	3
HJDK550-028S	2.8	16	46	3
HJDK550-029S	2.9	16	46	3
HJDK550-030S	3	16	46	3
HJDK550-031S	3.1	18	49	4
HJDK550-032S	3.2	18	49	4
HJDK550-033S	3.3	18	49	4
HJDK550-034S	3.4	20	52	4
HJDK550-035S	3.5	20	52	4
HJDK550-036S	3.6	20	52	4
HJDK550-037S	3.7	20	52	4
HJDK550-038S	3.8	20	52	4
HJDK550-039S	3.9	22	55	4
HJDK550-040S	4	22	55	4
HJDK550-041S	4.1	22	55	5
HJDK550-042S	4.2	22	55	5
HJDK550-043S	4.3	22	55	5
HJDK550-044S	4.4	24	55	5
HJDK550-045S	4.5	24	55	5
HJDK550-046S	4.6	24	58	5
HJDK550-047S	4.7	24	58	5
HJDK550-048S	4.8	24	58	5
HJDK550-049S	4.9	26	58	5
HJDK550 -050S	5	26	58	5
HJDK550-051S	5.1	26	62	5.1
HJDK550-052S	5.2	26	62	5.2
HJDK550-053S	5.3	28	62	5.3
HJDK550-054S	5.4	28	62	5.4
HJDK550-055S	5.5	28	66	5.5
HJDK550-056S	5.6	28	66	5.6
HJDK550-057S	5.7	28	66	5.7
HJDK550-058S	5.8	28	66	5.8
HJDK550-059S	5.9	28	66	5.9
HJDK550-060S	6	31	66	6
HJDK550-061S	6.1	31	70	7
HJDK550-062S	6.2	31	70	7
HJDK550-063S	6.3	31	70	7
HJDK550 -064S	6.4	31	70	7
HJDK550 -065S	6.5	31	70	7
HJDK550-066S	6.6	31	70	7
HJDK550-067S	6.7	31	70	7
HJDK550-068S	6.8	34	74	7
HJDK550-069S	6.9	34	74	7
HJDK550-070S	7	34	74	7
HJDK550-071S	7.1	34	74	8
HJDK550-072S	7.2	34	74	8
HJDK550-073S	7.3	34	74	8
HJDK550-074S	7.4	34	74	8
HJDK550-075S	7.5	34	74	8
HJDK550-076S	7.6	37	79	8
HJDK550-077S	7.7	37	79	8
HJDK550-078S	7.8	37	79	8
HJDK550-079S	7.9	37	79	8
HJDK550-080S	8	37	79	8
HJDK550-081S	8.1	37	79	9
HJDK550 -082S	8.2	37	79	9
HJDK550 -083S	8.3	37	79	9
HJDK550 -084S	8.4	37	79	9
HJDK550-085S	8.5	37	79	9
HJDK550-086S	8.6	40	84	9
HJDK550-087S	8.7	40	84	9
HJDK550-088S	8.8	40	84	9
HJDK550-089S	8.9	40	84	9
HJDK550-090S	9	40	84	9
HJDK550-091S	9.1	40	84	10
HJDK550-092S	9.2	40	84	10
HJDK550-093S	9.3	40	84	10
HJDK550-094S	9.4	40	84	10

HJDK550 Carbide Drills

Ordering code	Outside Diameter	Flute Length	Overall Length	Shank Diameter
	(D)	(l)	(L)	（D）
HJDK550-095S	9.5	40	84	10
HJDK550-096S	9.6	43	89	10
HJDK550-097S	9.7	43	89	10
HJDK550-098S	9.8	43	89	10
HJDK550-099S	9.9	43	89	10
HJDK550-100S	10	43	89	10
HJDK550-101S	10.1	43	89	11
HJDK550-102S	10.2	43	89	11
HJDK550-103S	10.3	43	89	11
HJDK550-104S	10.4	43	89	11
HJDK550-105S	10.5	43	89	11
HJDK550-106S	10.6	43	89	11
HJDK550-107S	10.7	43	89	11
HJDK550-108S	10.8	43	89	11
HJDK550-109S	10.9	43	89	11
HJDK550-110S	11	47	95	11
HJDK550-111S	11.1	47	95	12
HJDK550-112S	11.2	47	95	12
HJDK550-113S	11.3	47	95	12
HJDK550-114S	11.4	47	95	12
HJDK550-115S	11.5	47	95	12
HJDK550-116S	11.6	47	95	12
HJDK550-117S	11.7	47	95	12
HJDK550-118S	11.8	47	95	12
HJDK550-119S	11.9	47	95	12
HJDK550-120S	12	51	102	12
HJDK550-121S	12.1	51	102	13
HJDK550-122S	12.2	51	102	13
HJDK550-123S	12.3	51	102	13
HJDK550-124S	12.4	51	102	13
HJDK550-125S	12.5	51	102	13
HJDK550-126S	12.6	51	102	13
HJDK550-127S	12.7	51	102	13
HJDK550-128S	12.8	51	102	13
HJDK550-129S	12.9	51	102	13
HJDK550-130S	13	51	102	13

HJDK550 Standard  Drills:

Ordering code	Outside Diameter	Flute Length
	(D)	(l)
HJDK550-0030	0.3	5.5
HJDK550-0035	0.35	5.5
HJDK550-0040	0.4	7
HJDK550-0045	0.45	7
HJDK550-0050	0.5	8.5
HJDK550-0055	0.55	8.5
HJDK550-0060	0.6	9.5
HJDK550-0065	0.65	9.5
HJDK550-0070	0.7	9.5
HJDK550-0075	0.75	9.5
HJDK550-0080	0.8	9.5
HJDK550-0085	0.85	9.5
HJDK550-0090	0.9	9.5
HJDK550-0095	0.95	9.5
HJDK550-0100	1	10.5
HJDK550-0105	1.05	10.5
HJDK550-0110	1.1	10.5
HJDK550-0115	1.15	10.5
HJDK550-0120	1.2	10.5
HJDK550-0125	1.25	10.5
HJDK550-0130	1.3	12
HJDK550-0135	1.35	12
HJDK550-0140	1.4	12
HJDK550-0145	1.45	12
HJDK550-0150	1.5	12
HJDK550-0155	1.55	12
HJDK550-0160	1.6	12
HJDK550-0165	1.65	12
HJDK550-0170	1.7	12
HJDK550-0175	1.75	12
HJDK550-0180	1.8	12
HJDK550-0185	1.85	12
HJDK550-0190	1.9	12
HJDK550-0195	1.95	12
HJDK550-0200	2	12
HJDK550-0205	2.05	12
HJDK550-0210	2.1	12
HJDK550-0215	2.15	12
HJDK550-0220	2.2	12
HJDK550-0225	2.25	12
HJDK550-0230	2.3	12
HJDK550-0235	2.35	12
HJDK550-0240	2.4	12
HJDK550-0245	2.45	12
HJDK550-0250	2.5	12
HJDK550-0255	2.55	12
HJDK550-0260	2.6	12
HJDK550-0265	2.65	12
HJDK550-0270	2.7	12
HJDK550-0275	2.75	12
HJDK550-0280	2.8	12
HJDK550-0285	2.85	12
HJDK550-0290	2.9	12
HJDK550-0295	2.95	12
HJDK550-0300	3	12
HJDK550-0305	3.05	12
HJDK550-0310	3.1	12
HJDK550-0315	3.15	12
HJDK550-03175	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.

External cooling drill operation parameter:
Workpeice material	Cutting speed	Feed rate(mm/rev)
	(m/min)
	External cooling	D3	D4	D6	D8	D10	D12	D14	D16	D18	D20
	drill
Low carbon steel,long chip	100	0.09	0.11	0.14	0.19	0.23	0.24	0.28	0.3	0.33	0.34
（<125HB）	80	0.13	0.15	0.19	0.25	0.3	0.33	0.38	0.42	0.42	0.43
	50	0.16	0.19	0.23	0.31	0.38	0.41	0.45	0.5	0.5	0.51
Low carbon steel, short cut,	100	0.09	0.11	0.14	0.19	0.23	0.24	0.28	0.3	0.33	0.34
easy cut steel	75	0.13	0.15	0.19	0.25	0.3	0.33	0.38	0.42	0.42	0.43
（<125HB）	50	0.16	0.19	0.23	0.31	0.38	0.41	0.45	0.5	0.5	0.51
High carbon steel	90	0.09	0.11	0.14	0.19	0.23	0.24	0.28	0.3	0.33	0.34
and   medium carbon steel	70	0.13	0.15	0.19	0.25	0.3	0.33	0.38	0.42	0.42	0.43
（<25HRC）	45	0.16	0.19	0.23	0.31	0.38	0.41	0.45	0.5	0.5	0.51
Alloy steel,tool steel	90	0.09	0.11	0.14	0.19	0.23	0.24	0.28	0.3	0.33	0.34
（<35HRC）	70	0.13	0.15	0.19	0.25	0.3	0.33	0.38	0.42	0.42	0.43
	45	0.16	0.19	0.23	0.31	0.38	0.41	0.45	0.5	0.5	0.51
Alloy steel, tool steel	80	0.09	0.1	0.13	0.17	0.21	0.22	0.26	0.28	0.31	0.31
（35-48HRC）	60	0.12	0.14	0.17	0.23	0.28	0.3	0.35	0.37	0.38	0.39
	40	0.14	0.17	0.22	0.29	0.35	0.37	0.41	0.44	0.46	0.47
PH and ferritic, martensitic steels	70	0.09	0.1	0.13	0.17	0.21	0.22	0.26	0.28	0.31	0.31
（<35HRC）	50	0.12	0.14	0.17	0.23	0.28	0.3	0.35	0.37	0.38	0.39
	30	0.14	0.17	0.23	0.29	0.35	0.37	0.41	0.44	0.46	0.47
Austenitic stainless steel		0.05	0.06	0.07	0.08	0.09	0.1	0.11	0.12	0.13	0.14
（130-200HB）		0.08	0.1	0.12	0.13	0.15	0.17	0.18	0.2	0.22	0.24
		0.1	0.12	0.14	0.18	0.2	0.22	0.24	0.24	0.26	0.28
High strength austenitic		0.03	0.04	0.05	0.06	0.07	0.08	0.09	0.1	0.1	0.12
and forged stainless steel		0.06	0.08	0.08	0.1	0.11	0.13	0.13	0.14	0.14	0.16
（<25HRC）		0.08	0.1	0.1	0.12	0.14	0.16	0.18	0.18	0.2	0.22
Duplex stainless steel		0.03	0.04	0.05	0.06	0.07	0.08	0.09	0.1	0.1	0.12
（<30HRC）		0.06	0.08	0.08	0.1	0.11	0.13	0.13	0.14	0.14	0.16
		0.08	0.1	0.1	0.12	0.14	0.16	0.18	0.18	0.2	0.22
Gray iron	100	0.13	0.15	0.17	0.2	0.25	0.26	0.28	0.3	0.32	0.36
（<32HRC）	80	0.17	0.02	0.26	0.32	0.36	0.38	0.4	0.42	0.44	0.48
	60	0.21	0.26	0.32	0.4	0.42	0.46	0.5	0.52	0.54	0.56
Alloy iron of medium	100	0.11	0.13	0.15	0.17	0.22	0.22	0.24	0.26	0.3	0.34
processing difficulty,	80	0.15	0.18	0.23	0.26	0.28	0.34	0.35	0.4	0.4	0.43
nodular cast iron	60	0.18	0.22	0.27	0.38	0.38	0.42	0.44	0.48	0.46	0.5
（<28HRC）
Intractable high alloy cast iron,	90	0.06	0.08	0.1	0.13	0.15	0.17	0.19	0.2	0.23	0.23
nodular cast iron	70	0.09	0.1	0.13	0.17	0.2	0.22	0.26	0.27	0.28	0.29
（<28HRC）	60	0.11	0.13	0.16	0.21	0.26	0.28	0.31	0.33	0.34	0.35
Wrought aluminum alloy		0.06	0.13	0.16	0.18	0.2	0.22	0.24	0.28	0.32	0.34
（Si<12%）		0.09	0.2	0.22	0.26	0.3	0.34	0.36	0.38	0.4	0.42
		0.11	0.26	0.28	0.32	0.38	0.42	0.44	0.46	0.48	0.48
Cast aluminium alloy		0.06	0.13	0.16	0.18	0.2	0.22	0.24	0.28	0.32	0.34
（Si<12%）		0.09	0.2	0.22	0.26	0.3	0.34	0.36	0.38	0.4	0.42
		0.11	0.26	0.28	0.32	0.38	0.42	0.44	0.46	0.48	0.48
Cast aluminium alloy		0.06	0.13	0.16	0.18	0.2	0.22	0.24	0.28	0.32	0.34
（Si>12%）		0.09	0.2	0.22	0.26	0.3	0.34	0.36	0.38	0.4	0.42
		0.11	0.26	0.28	0.32	0.38	0.42	0.44	0.46	0.48	0.48
Copper, copper alloy		0.06	0.13	0.16	0.18	0.2	0.22	0.24	0.28	0.32	0.34
（<200HB）		0.09	0.2	0.22	0.26	0.3	0.34	0.36	0.38	0.4	0.42
		0.11	0.26	0.28	0.32	0.38	0.42	0.44	0.46	0.48	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.

The company has a complete blade manufacturing process equipment production line from powder raw material preparation, mold making, pressing, pressure sintering, grinding, coating and coating post-treatment. It focuses on the research and innovation of the base material, groove structure, precision forming and surface coating of carbide NC inserts, and constantly improves the machining efficiency, service life and other cutting properties of carbide NC inserts. After more than ten years of scientific research and innovation, the company has mastered a number of independent core technologies, has independent R&D and design capabilities, and can provide customized production for each customer.