DEEP HOLE DRILLS

Solid Carbide Deep Hole Drills for Stable Drilling.

D3000-Series

Deep Hole Drill Design Highlights

Solid Carbide Construction
Oerlikon AITiN-nano Coating
Precision Point Geometry
Advanced Edge Preparation
Optimized Internal Coolant Design
Reinforced Web Core

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Deep Hole Drill Types

8×D Internal Coolant Deep Hole Twist Drill

Used for medium-depth hole machining with a balance between hole accuracy and manufacturing stability.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
S: Superalloy
H: Hardened Steel
8×D drilling depths
Internal Coolant Design
Oerlikon AITiN-nano Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
135° Point Angle
Solid Carbide Construction

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15×D Internal Coolant Deep Hole Twist Drill

Used for extended-depth drilling with superior hole accuracy and efficient chip flow.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
S: Superalloy
H: Hardened Steel
15×D drilling depths
Internal Coolant Design
Oerlikon AITiN-nano Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
135° Point Angle
Solid Carbide Construction

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20×D Internal Coolant Deep Hole Twist Drill

Suitable for drilling deeper holes with stable guidance and hole consistency.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
S: Superalloy
H: Hardened Steel
20×D drilling depths
Internal Coolant Design
Oerlikon AITiN-nano Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
135° Point Angle
Solid Carbide Construction

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25×D Internal Coolant Deep Hole Twist Drill

Designed for high-performance deep-hole drilling with reinforced rigidity and efficient internal coolants.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
S: Superalloy
H: Hardened Steel
25×D drilling depths
Internal Coolant Design
Oerlikon AITiN-nano Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
135° Point Angle
Solid Carbide Construction

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30×D Internal Coolant Deep Hole Twist Drill

Used for extra-deep drilling operations with less tool deflection and higher guidance accuracy.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
S: Superalloy
H: Hardened Steel
30×D drilling depths
Internal Coolant Design
Oerlikon AITiN-nano Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
135° Point Angle
Solid Carbide Construction

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35×D Internal Coolant Deep Hole Twist Drill

Perfect for ultra-deep hole drilling with excellent tool rigidity and accurate guidance.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
S: Superalloy
H: Hardened Steel
35×D drilling depths
Internal Coolant Design
Oerlikon AITiN-nano Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
135° Point Angle
Solid Carbide Construction

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40×D Internal Coolant Deep Hole Twist Drill

Perfect for ultra-deep hole drilling with excellent tool rigidity and accurate guidance.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
S: Superalloy
H: Hardened Steel
40×D drilling depths
Internal Coolant Design
Oerlikon AITiN-nano Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
135° Point Angle
Solid Carbide Construction

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45×D Internal Coolant Deep Hole Twist Drill

Built for extra-long drilling with excellent hole straightness and dimensional accuracy.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
S: Superalloy
H: Hardened Steel
45×D drilling depths
Internal Coolant Design
Oerlikon AITiN-nano Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
135° Point Angle
Solid Carbide Construction

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50×D Internal Coolant Deep Hole Twist Drill

Specialized for maximum-depth hole drilling with high process reliability and stability.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
S: Superalloy
H: Hardened Steel
50×D drilling depths
Internal Coolant Design
Oerlikon AITiN-nano Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
135° Point Angle
Solid Carbide Construction

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D3000-Series

Why Choose Our Deep Hole Drills?

JINOO’s Deep Hole Drills have gained several features that incredibly raise machining efficiency. They are highly suitable across various industries and a wide range of workpiece materials.

Solid Carbide Construction

Our solid carbide deep-hole drills are manufactured from 0.4 μm ultra-fine grain carbide substrates with high density and durability.

Oerlikon AITiN-nano Coating

Deep hole drills can be customised with Oerlikon AITiN-nano coatings, which feature a uniform structure and high density.

Precision Point Geometry

Our deep hole drills are designed with the self-centering geometry and the thinned chisel edge.

Advanced Edge Preparation

Micro-honed cutting edges feature the precise edge preparation to deliver consistent edge profiles.

Optimized Internal Coolant Design

Deep hole drills are specialized with high-pressure internal coolant channels to maintain efficient lubrication.

Reinforced Web Core

The web core of deep hole drills extends through the flute, featuring the strengthened cross-sectional core geometry.

Deep Hole Drill Geometry Breakdown

1. Solid Carbide Construction for Higher Rigidity

0.4 μm ultra-fine grain carbide substrates can deliver more stability in deep-hole drilling with their uniform 12% cobalt content, 14.10 g/cm³ density, 92.5 HRA hardness, and 4200 MPa transverse rupture strength.

2. Oerlikon AITiN-nano Coating for Heat Resistance

Oerlikon PVD AlTiN-nano multilayer coatings feature a uniform thickness to deliver smoother cutting with less friction and thermal stability.

3. Precision Point Geometry for Hole Straightness

The self-centering geometry can significantly decrease deep hole drill walking and deliver excellent hole straightness.

4. Advanced Edge Preparation for Edge Stability

Micro-honed cutting edges with controlled edge radius from 10 to 25μm can deliver superior edge consistency with minimal micro-chipping.

5. Optimized Internal Coolant Design for Drilling Stability

High-pressure internal coolant channels can promote coolant delivery and chip evacuation in deep-hole drilling up to 50×D.

6. Reinforced Web Core for Structural Stability

The thickened web core is designed with a reinforced core cross-section, improving the torsional rigidity with minimal tool deflection.

Deep Hole Drill Geometry Breakdown of D3000-Series Deep Hole Drills

Technical Data

Ultra-fine Grain Substrate	0.4μm
Cutting Diameter Tolerance	H6
Coating	AlTiN + TiSiN / TiAlSiN-X / AlTiN / TiAlN / TiAlSiN / DLC / AlCrN / AlCrSiN / AlTiSiN / TiSiXN / Customized Available
Flute Number	4
Overall Length	50 / 60 / 75 / 100 / 150 / 200mm / Customised Length
Shank Diameter	4 / 6 / 8 / 10 / 12 / 14 / 16/ 18 / 20mm / Customised Diameter

D3000-Series

Deep Hole Drill Specifications

Custom Deep Hole Drill Size Range
Carbide Substrate
Quick Selection Guide
Recommended Cutting Parameters

Code	inch	Cutting Diameter d1(h7)	Shank Diameter d2(h6)	Total Length l1	Flute Length l2	Shank Length l4
D3015-CHA-D03000		3	6	95	55	36
D3015-CHA-D03170	1/8	3.17	6	106	67	36
D3015-CHA-D03500		3.5	6	116	76	36
D3015-CHA-D03570	9/64	3.57	6	116	76	36
D3015-CHA-D03970	5/32	3.97	6	116	76	36
D3015-CHA-D04000		4	6	116	76	36
D3015-CHA-D04370	11/64	4.37	6	133	93	36
D3015-CHA-D04500		4.5	6	133	93	36
D3015-CHA-D04760	3/16	4.76	6	133	93	36
D3015-CHA-D05000		5	6	133	93	36
D3015-CHA-D05100		5.1	6	150	110	36
D3015-CHA-D05160	13/64	5.16	6	150	110	36
D3015-CHA-D05410		5.41	6	150	110	36
D3015-CHA-D05500		5.5	6	150	110	36
D3015-CHA-D05560	7/32	5.56	6	150	110	36
D3015-CHA-D05950	15/64	5.95	6	150	110	36
D3015-CHA-D06000		6	6	150	110	36
D3015-CHA-D06350	1/4	6.35	8	167	127	36
D3015-CHA-D06500		6.5	8	167	127	36
D3015-CHA-D06750	17/64	6.75	8	167	127	36
D3015-CHA-D07000		7	8	167	127	36
D3015-CHA-D07140	9/32	7.14	8	183	143	36
D3015-CHA-D07500		7.5	8	183	143	36
D3015-CHA-D07510	19/64	7.54	8	183	143	36
D3015-CHA-D07940	5/16	7.94	8	183	143	36
D3015-CHA-D08000		8	8	183	143	36
D3015-CHA-D08330	21/64	8.33	10	204	160	40
D3015-CHA-D08500		8.5	10	204	160	40
D3015-CHA-D08730	11/32	8.73	10	204	160	40
D3015-CHA-D09000		9	10	204	160	40
D3015-CHA-D09130	23/64	9.13	10	221	177	40
D3015-CHA-D09520	3/8	9.52	10	221	177	40
D3015-CHA-D09920	25/64	9.92	10	221	177	40
D3015-CHA-D10000		10	10	221	177	40
D3015-CHA-D10320	13/32	10.32	12	247	198	45
D3015-CHA-D10720	27/64	10.72	12	247	198	45
D3015-CHA-D11000		11	12	247	198	45
D3015-CHA-D11110	7/16	11.11	12	263	214	45
D3015-CHA-D11510	29/64	11.51	12	263	214	45
D3015-CHA-D11910	15/32	11.91	12	263	214	45
D3015-CHA-D12000		12	12	263	214	45
D3015-CHA-D12300	31/64	12.3	14	297	248	45
D3015-CHA-D12700	1/2	12.7	14	297	248	45
D3015-CHA-D13100	33/64	13.1	14	297	248	45
D3015-CHA-D13490	17/32	13.49	14	297	248	45
D3015-CHA-D13890	35/64	13.89	14	297	248	45
D3015-CHA-D14000		14	14	297	248	45

Code	Cutting Diameter d1(h7)	inch	Shank Diameter d2(h6)	Total Length l1	Flute Length l2	Maximum Cutting Depth l3	Shank Length l4
D3020-CHA-D03000	3		6	107	65	60	36
D3020-CHA-D03175	3.175	1/8	6	134	92	86	36
D3020-CHA-D03500	3.5		6	134	92	86	36
D3020-CHA-D03572	3.572	9/64	6	134	92	86	36
D3020-CHA-D03969	3.969	5/32	6	134	92	86	36
D3020-CHA-D04000	4		6	134	92	86	36
D3020-CHA-D04500	4.5		6	158	118	110	36
D3020-CHA-D04763	4.763	3/16	6	158	118	110	36
D3020-CHA-D04800	4.8		6	158	118	110	36
D3020-CHA-D05000	5		6	158	118	110	36
D3020-CHA-D05500	5.5		6	170	132	123	36
D3020-CHA-D05556	5.556	7/32	6	182	144	135	36
D3020-CHA-D05800	5.8		6	182	144	135	36
D3020-CHA-D06000	6		6	182	144	135	36
D3020-CHA-D06100	6.1		8	200	162	151	36
D3020-CHA-D06350	6.35	1/4	8	200	162	151	36
D3020-CHA-D06500	6.5		8	200	162	151	36
D3020-CHA-D06800	6.8		8	200	162	151	36
D3020-CHA-D07000	7		8	200	162	151	36
D3020-CHA-D07144	7.144	9/32	8	222	184	172	36
D3020-CHA-D07400	7.4		8	222	184	172	36
D3020-CHA-D07500	7.5		8	222	184	172	36
D3020-CHA-D07938	7.938	5/16	8	222	184	172	36
D3020-CHA-D08000	8		8	222	184	172	36
D3020-CHA-D08300	8.3		10	240	198	184	40
D3020-CHA-D08500	8.5		10	240	198	184	40
D3020-CHA-D08731	8.731	11/32	10	240	198	184	40
D3020-CHA-D09000	9		10	240	198	184	40
D3020-CHA-D09525	9.525	3/8	10	262	220	205	40
D3020-CHA-D09800	9.8		10	262	220	205	40
D3020-CHA-D10000	10		10	282	220	205	40
D3020-CHA-D10200	10.2		12	289	242	225	45
D3020-CHA-D10319	10.319	13/32	12	289	242	225	45
D3020-CHA-D11000	11		12	311	264	246	45
D3020-CHA-D11113	11.113	7/16	12	311	264	246	45
D3020-CHA-D11500	11.5		12	311	264	246	45
D3020-CHA-D11800	11.8		12	311	264	246	45
D3020-CHA-D11906	11.906	15/32	12	311	264	246	45
D3020-CHA-D12000	12		12	311	264	246	45

Code	Cutting Diameter d1(h7)	inch	Shank Diameter d2(h6)	Total Length l1	Flute Length l2	Shank Length l4
D3025-CHA-D03000	3		6	125	85	36
D3025-CHA-D03100	3.1		6	141	101	36
D3025-CHA-D03500	3.5		6	156	116	36
D3025-CHA-D03800	3.8		6	156	116	36
D3025-CHA-D03970	3.97	5/32	6	156	116	36
D3025-CHA-D04000	4		6	156	116	36
D3025-CHA-D04200	4.2		6	183	143	36
D3025-CHA-D04500	4.5		6	183	143	36
D3025-CHA-D04760	4.76	3/15	6	183	143	36
D3025-CHA-D05000	5		6	183	143	36
D3025-CHA-D05100	5.1		6	210	170	36
D3025-CHA-D05500	5.5		6	210	170	36
D3025-CHA-D05560	5.56	7/32	6	210	170	36
D3025-CHA-D06000	6		6	210	170	36
D3025-CHA-D06300	6.3		8	237	197	36
D3025-CHA-D06350	6.35	1/4	8	237	197	36
D3025-CHA-D06500	6.5		8	237	197	36
D3025-CHA-D07000	7		8	237	197	36
D3025-CHA-D07140	7.14	9/32	8	263	223	36
D3025-CHA-D07500	7.5		8	263	223	36
D3025-CHA-D08000	8		8	263	223	36
D3025-CHA-D08500	8.5		10	294	250	40
D3025-CHA-D08800	8.8		10	294	250	40
D3025-CHA-D09000	9		10	294	250	40
D3025-CHA-D10000	10		10	321	277	40
D3025-CHA-D11000	11		12	359	310	40
D3025-CHA-D12000	12		12	386	337	40

D3030-CHA-D03000	3		6	140	100	36
D3030-CHA-D03100	3.1		6	158	118	36
D3030-CHA-D03500	3.5		6	176	136	36
D3030-CHA-D03800	3.8		6	176	136	36
D3030-CHA-D03970	3.97	5/32	6	176	136	36
D3030-CHA-D04000	4		6	176	136	36
D3030-CHA-D04200	4.2		6	208	168	36
D3030-CHA-D04500	4.5		6	208	168	36
D3030-CHA-D04760	4.76	3/16	6	208	168	36
D3030-CHA-D05000	5		6	208	168	36
D3030-CHA-D05100	5.1		6	240	200	36
D3030-CHA-D05500	5.5		6	240	200	36
D3030-CHA-D05560	5.56	7/32	6	240	200	36
D3030-CHA-D06000	6		6	240	200	36
D3030-CHA-D06300	6.3		8	272	232	36
D3030-CHA-D06350	6.35	1/4	8	272	232	36
D3030-CHA-D06500	6.5		8	272	232	36
D3030-CHA-D07000	7		8	272	232	36
D3030-CHA-D07140	7.14	9/32	8	303	263	36
D3030-CHA-D07500	7.5		8	303	263	36
D3030-CHA-D08000	8		8	303	263	36
D3030-CHA-D08500	8.5		10	339	295	40
D3030-CHA-D08800	8.8		10	339	295	40
D3030-CHA-D09000	9		10	339	295	40
D3030-CHA-D10000	10		10	371	327	40

D3040-CHA-D03000	3		6	170	130	36
D3040-CHA-D03100	3.1		6	193	153	36
D3040-CHA-D03350	3.17	1/8	6	193	153	36
D3040-CHA-D03800	3.5		6	193	153	36
D3040-CHA-D03970	3.8		6	216	176	36
D3040-CHA-D04000	3.97	5/32	6	216	176	36
D3040-CHA-D04200	4		6	216	176	36
D3040-CHA-D04500	4.2		6	238	198	36
D3040-CHA-D04700	4.5		6	238	198	36
D3040-CHA-D05000	4.76	3/16	6	258	218	36
D3040-CHA-D05100	5		6	258	218	36
D3040-CHA-D05500	5.1		6	280	240	36
D3040-CHA-D05580	5.5		6	280	240	36
D3040-CHA-D06000	5.56	7/32	6	300	260	36
D3040-CHA-D06300	6		6	300	260	36
D3040-CHA-D06350	6.3		8	322	282	36
D3040-CHA-D06500	6.35	1/4	8	322	282	36
D3040-CHA-D07000	6.5		8	322	282	36
D3040-CHA-D07140	7	9/32	8	342	302	36
D3040-CHA-D07500	7.14		8	342	302	36
D3040-CHA-D08000	7.5		8	363	323	36
D3040-CHA-D08500	8		8	383	343	36

Grain size	Feature	Suitable materials	Advantage
0.2μ	Ultra-fine grain, extremely high hardness, very sharp cutting edge	Hardened steel (HRC60+), stainless steel, titanium alloys, micro-diameter tools	Excellent wear resistance & edge sharpness, ideal for high-precision finishing, but lower toughness
0.4μ	Ultrafine grain, excellent hardness-toughness balance	hardness-toughness balance Hardened steel, stainless steel, alloy steel, precision mold steel	High wear resistance with good edge stability, suitable for finishing & semi-finishing
0.6μ	Fine grain, balanced performance	Carbon steel, alloy steel, stainless steel, cast iron (general conditions)	Good balance of wear resistance and toughness, versatile general-purpose grade
0.7μ	Medium-fine grain, improved toughness	General steel, low-alloy steel, interrupted cutting conditions	Better resistance to chipping, suitable for semi-roughing and unstable cutting
0.8μ	Medium grain, high toughness	Low carbon steel, rough machining, heavy interrupted cutting	Strong impact resistance, suitable for roughing and demanding cutting stability

Materials		Workpiece Materials	Type
ISO
P	P1	Free-Cutting Steel	UP / UT / UK / UM / US / UHT / UR / S65 / S60 / S58 / S55 / SM / SEU / SR
	P2	Low Carbon Steel（C<0.25%）
	P4	Medium Carbon Steel(0.25%<C<0.60%), Low Alloy Steel
	P5	Alloy Steel, Quenched and Tempered Steel
	P6	High Carbon Steel（C>0.6%）
	P11	Ferritic Stainless Steel, Martensitic Stainless Steel
H	H5	Quenched and Tempered Steel	UP / UH / UT / UK / UM / UHT / UR / S68 / S65 / SEU
	H7	Bearing Steel
	H8	Tool Steel, High Speed Steel
	H12	Hardened Stainless Steel
	H21	Zinc-Plated Steel
M	M1	Austenitic Stainless Steel	UP / UK / UM / US / UR / S65 / S60 / S58 / SM / SEU
	M2	High-Strength Austenitic Stainless Steel
	M4	Duplex Stainless Steel
S	S1	Iron-Based Superalloy	UM / US / UR / SM
	S2	Cobalt-Based Superalloy
	S3	Nickel-Based Superalloy
	S11	Titanium Alloy (Low Alloy)
	S13	Titanium Alloy (High Alloy)
K	K1	Gray Cast Iron	UP / UK / UM / UR / S65 / S60 / S58 / S55 / SEU / SR
	K2	Compacted Graphite Iron（CGI）
	K3	Malleable Cast Iron
	K4	Ductile Cast Iron
N	N1	Aluminum-Silicon Alloy,Silicon content<9%	UA / SA / SR
	N2	Silicon-Aluminum Alloy,9%<Silicon content<16%
	N3	Silicon-Aluminum Alloy,Silicon content>16%
	N4	Cast Aluminum Alloy
	N5	Wrought Aluminum Alloy
	N10	Copper
	N11	Copper Alloy

Materials		Workpiece Materials	Hardness HB	Hardness HRC
Materials					Coolant Type		Drill Bits Diameter d
SO					Exteral Coolant	Internal Cooant		4	6	8	10	12	14
P Steel Parts	P1	Free-Cutting Steel	<125		70		0.06	0.08	0.1	0.12	0.16	0.2	0.25
	P2	Low Carbon Steel(C<0.25%)	<125			70	0.06	0.08	0.1	0.12	0.16	0.2	0.25
	P4	Medium Carbon Steel(0.25%<C<0.60%), Low Alloy Steel	<220	<25		70	0.06	0.08	0.1	0.12	0.16	0.2	0.25
	P5	Aloy Steel, Quenched and Tempered Steel	<330	28-35		70	0.06	0.08	0.1	0.12	0.16	0.2	0.25
	P6	High Carbon Steel(C>0.6%)	370-750	45-65
	P11	Ferritic Stainless Steel, Martensilic Stainless Steel	250-450	38-50		70	0.06	0.08	0.1	0.12	0.16	0.2	0.25
H Hardened Materials	H5	Quenched and Tempered Steel		35-40		60	0.06	0.08	0.1	0.12	0.16	0.2	0.25
M Stainless Steel	M1	Austenitic Stainless Steel	<150			50	0.06	0.08	0.1	0.12	0.16	0.2	0.25
	M2	High-Strength Austenitic Stainless Steel	150-230			50	0.06	0.08	0.1	0.12	0.16	0.2	0.25
	M4	Duplex Stainless Steel	135-275			50	0.06	0.08	0.1	0.12	0.16	0.2	0.25
K Cast Iron	K1	Gray Cast Iron	120-290	<32		70	0.06	0.08	0.1	0.12	0.16	0.2	0.25
	K2	Compacted Graphite Iron(CGI)	120-290	<32		70	0.06	0.08	0.1	0.12	0.16	0.2	0.25
	K3	Malleable Cast Iron	130-260	<28		70	0.06	0.08	0.1	0.12	0.16	0.2	0.25
	K4	Ductile Cast Iron	180-350	<43		70	0.06	0.08	0.1	0.12	0.16	0.2	0.25
on ferrous Metals	N1	Aluminum-Silicon Alloy,Silicon content<9%	60-90			90	0.08	0.1	0.12	0.16	0.2	0.25	0.3
	N2	Silicon-Aluminum Alloy 9%<Silicon content<16%	70-100			90	0.08	0.1	0.12	0.16	0.2	0.25	0.3
	N3	Silicon-Aluminum Alloy,Silicon content>16%	90-150			90	0.08	0.1	0.12	0.16	0.2	0.25	0.3
	N4	Cast Aluminum Alloy	60-120			90	0.08	0.1	0.12	0.16	0.2	0.25	0.3
	N5	Wrought Aluminum Alloy	60-90			90	0.08	0.1	0.12	0.16	0.2	0.25	0.3
	N10	Copper				90	0.08	0.1	0.12	0.16	0.2	0.25	0.3
	N11	Copper Alloy	120-200			80	0.06	0.08	0.1	0.12	0.16	0.2	0.25

Deep Hole Drill Application Cases

Wind Turbine Slewing Bearing Deep Hole Drilling

Background

Our customer produces wind turbine slewing bearings, where deep oil-hole drilling is crucial with consistent dimensions and drilling stability.

Challenge

Workpiece: Wind Turbine Slewing Bearing
Material: 42CrMo4 Alloy Steel
Hardness: HB220–300
Hole Type: Through Hole
Hole Depth: 125 mm

Requirement:
Excellent hole straightness and smooth chip evacuation in continuous production.

Solution

Tool Used: D3000-Series Internal Coolant Deep Hole Drill (Ø9 × 140 mm)
Coolant Type: Internal Coolant
Machine Tool: CNC Horizontal Boring & Milling Machine
Spindle Speed: 1200 rpm
Feed Rate: 250–280 mm/min

Results

Nearly 37% longer tool life can be achieved with the use of our deep hole drills. They can achieve stable drilling with fewer tool changes, decreasing your overall tooling costs.

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Real Case of D3000-Series Deep Hole Drills

Hydraulic Pump Body Deep Hole Drilling

Background

A hydraulic component manufacturer needs to perform deep hole drilling of through and blind holes in cast iron pumps.

Challenge

Workpiece: Hydraulic Pump Body
Material: HT300 Cast Iron
Hardness: 180–228 HBS
Hole Type: Through Hole / Blind Hole
Hole Depth: 120 mm (30×D)
Requirement: Stable drilling of multiple deep holes with superior dimensional consistency and longer tool life.

Solution

Tool Used: D3000-Series 30×D Internal Coolant Deep Hole Drill (Ø5 × 170 mm)
Coolant Type: Internal Coolant
Machine Tool: Mazak HCN6800 Horizontal Machining Center
Spindle Speed: 5000 rpm
Feed Rate: 0.08 mm/rev

Results

The machined workpieces can be increased from 200 to 260 with approximately 30% extended tool life. Our deep hole drills can achieve continuous machining in through and blind holes with fewer tool changes.

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How JINOO Manufactures Deep Hole Drills?

Precision CNC Grinding Machines

1. WALTER Helitronic Power 400L
2. WALTER Helitronic Vision 400L
3. WALTER Helitronic Micro 400L
4. Rollomatic NP5
5. ANCA MX5
6. ANCA MX7

JINOO is one of the few worldwide companies that can design and produce deep hole drills to gain a maximum length of 50xD. With the use of advanced 5-axis grinding machines, our 50xD Deep Hole Drills can gain high precision for the body balance to ensure superior hole accuracy with minimal tool deflection.
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1. WALTER Helitronic Power 400L
2. WALTER Helitronic Vision 400L
3. WALTER Helitronic Micro 400L
4. Rollomatic NP5
5. ANCA MX5
6. ANCA MX7

JINOO is one of the few worldwide companies that can design and produce deep hole drills to gain a maximum length of 50xD. With the use of advanced 5-axis grinding machines, our 50xD Deep Hole Drills can gain high precision for the body balance to ensure superior hole accuracy with minimal tool deflection.

Get instant Quote
1. WALTER Helitronic Power 400L
2. WALTER Helitronic Vision 400L
3. WALTER Helitronic Micro 400L
4. Rollomatic NP5
5. ANCA MX5
6. ANCA MX7

JINOO is one of the few worldwide companies that can design and produce deep hole drills to gain a maximum length of 50xD. With the use of advanced 5-axis grinding machines, our 50xD Deep Hole Drills can gain high precision for the body balance to ensure superior hole accuracy with minimal tool deflection.
Get instant Quote
1. WALTER Helitronic Power 400L
2. WALTER Helitronic Vision 400L
3. WALTER Helitronic Micro 400L
4. Rollomatic NP5
5. ANCA MX5
6. ANCA MX7

JINOO is one of the few worldwide companies that can design and produce deep hole drills to gain a maximum length of 50xD. With the use of advanced 5-axis grinding machines, our 50xD Deep Hole Drills can gain high precision for the body balance to ensure superior hole accuracy with minimal tool deflection.
Get instant Quote
1. WALTER Helitronic Power 400L
2. WALTER Helitronic Vision 400L
3. WALTER Helitronic Micro 400L
4. Rollomatic NP5
5. ANCA MX5
6. ANCA MX7

JINOO is one of the few worldwide companies that can design and produce deep hole drills to gain a maximum length of 50xD. With the use of advanced 5-axis grinding machines, our 50xD Deep Hole Drills can gain high precision for the body balance to ensure superior hole accuracy with minimal tool deflection.
Get instant Quote
1. WALTER Helitronic Power 400L
2. WALTER Helitronic Vision 400L
3. WALTER Helitronic Micro 400L
4. Rollomatic NP5
5. ANCA MX5
6. ANCA MX7

JINOO is one of the few worldwide companies that can design and produce deep hole drills to gain a maximum length of 50xD. With the use of advanced 5-axis grinding machines, our 50xD Deep Hole Drills can gain high precision for the body balance to ensure superior hole accuracy with minimal tool deflection.
Get instant Quote

Advanced Quality Inspection System

1. ZOLLER G3 Tool Measurement: Applied for the comprehensive inspection of the deep hole drill geometry, such as the accuracy and consistency of tool diameters, point angles, and concentricity, with the measurement tolerances lower than ±2 μm.

2. PG1000 Optical Inspection: Used to perform the microscopic examination of the cutting edges and coatings to ensure the surface uniformity of deep hole drills without defects.

3. Parlec Tool Presetting: Utilized to inspect the tool dimensions, runout values, and positioning precision, enabling stable tool assembly.

Compared with standard deep hole drills in the market, JINOO’s innovative D3000-Series Deep Hole Drills perform better. They can achieve H8-H9 hole tolerances and drilling depths from 12xD to 50xD, suited to a range of workpiece materials.
Get instant Quote
1. ZOLLER G3 Tool Measurement: Applied for the comprehensive inspection of the deep hole drill geometry, such as the accuracy and consistency of tool diameters, point angles, and concentricity, with the measurement tolerances lower than ±2 μm.

2. PG1000 Optical Inspection: Used to perform the microscopic examination of the cutting edges and coatings to ensure the surface uniformity of deep hole drills without defects.

3. Parlec Tool Presetting: Utilized to inspect the tool dimensions, runout values, and positioning precision, enabling stable tool assembly.

Compared with standard deep hole drills in the market, JINOO’s innovative D3000-Series Deep Hole Drills perform better. They can achieve H8-H9 hole tolerances and drilling depths from 12xD to 50xD, suited to a range of workpiece materials.
Get instant Quote
1. ZOLLER G3 Tool Measurement: Applied for the comprehensive inspection of the deep hole drill geometry, such as the accuracy and consistency of tool diameters, point angles, and concentricity, with the measurement tolerances lower than ±2 μm.

2. PG1000 Optical Inspection: Used to perform the microscopic examination of the cutting edges and coatings to ensure the surface uniformity of deep hole drills without defects.

3. Parlec Tool Presetting: Utilized to inspect the tool dimensions, runout values, and positioning precision, enabling stable tool assembly.

Compared with standard deep hole drills in the market, JINOO’s innovative D3000-Series Deep Hole Drills perform better. They can achieve H8-H9 hole tolerances and drilling depths from 12xD to 50xD, suited to a range of workpiece materials.
Get instant Quote

Fine-grain Carbide Tool Material

1. The high-quality carbide substrates used in manufacturing deep hole drills are all sourced from GESAC, Kennametal, Sandvik, Gühring, and CB Ceratizit.

2. Unmatched heat and wear resistance can be achieved because of the higher density and durability of the fine-grain carbide material.

3. The UMG carbide features even cobalt distribution with cobalt content ranging from 10% to 12%.

4. The deep hole drill life can be greatly extended by about 1.5 times.

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Virgin Carbide Instead of Recycled Carbide

JINOO’s Virgin Carbide used in our deep hole drills:
- Uniform grain size
- No impurities
- Longer tool life
- High density
- Pure structure
- High wear resistance
Competitor’s Inferior Recycled Carbide:
- Uneven grain size
- Many impurities
- Loose structure
- Prone to edge chipping
- Low density
- Unstable performance
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Reliable Coating Partners

1. JINOO uses the high-performance coatings from Oerlikon Balzers in Switzerland.

2. We can customize deep hole drills for you based on a wide range of coating options.

3. These advanced coatings feature uniform grain size with high density to improve their drilling performance with less friction.
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High-performance Coating vs. Poor-quality Coating

High-quality coatings used in our deep hole drills:
- Strong adhesion
- Consistent thickness
- Tight tolerances
- High density
- High wear resistance
- Fine surface finishes
Competitor’s inferior coatings used in low-grade drill bits:
- Weak adhesion
- Non-uniform thickness
- Loose structure
- Poor density
- Rapid tool wear
- Rough surfaces
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TÜV Rheinland Qualified Manufacturer

- ISO9001:2008 Certified
- ISO9001:2015 Certified
- SGS Qualified Manufacturer
- TÜV Rheinland Qualified Manufacturer
- Alibaba.com Verified Supplier
- Made-in-China Verified Supplier
- 1688 platforms Verified Supplier
- National High-tech Enterprise
- Changzhou High-Tech Product Certification
As a professional deep hole drill manufacturer, we strictly control the tool quality with excellent manufacturing and product compliance. These certifications prove our consistent tooling performance and long-term process stability.
Get instant Quote
- ISO9001:2008 Certified
- ISO9001:2015 Certified
- SGS Qualified Manufacturer
- TÜV Rheinland Qualified Manufacturer
- Alibaba.com Verified Supplier
- Made-in-China Verified Supplier
- 1688 platforms Verified Supplier
- National High-tech Enterprise
- Changzhou High-Tech Product Certification
As a professional deep hole drill manufacturer, we strictly control the tool quality with excellent manufacturing and product compliance. These certifications prove our consistent tooling performance and long-term process stability.
Get instant Quote
- ISO9001:2008 Certified
- ISO9001:2015 Certified
- SGS Qualified Manufacturer
- TÜV Rheinland Qualified Manufacturer
- Alibaba.com Verified Supplier
- Made-in-China Verified Supplier
- 1688 platforms Verified Supplier
- National High-tech Enterprise
- Changzhou High-Tech Product Certification
As a professional deep hole drill manufacturer, we strictly control the tool quality with excellent manufacturing and product compliance. These certifications prove our consistent tooling performance and long-term process stability.
Get instant Quote
- ISO9001:2008 Certified
- ISO9001:2015 Certified
- SGS Qualified Manufacturer
- TÜV Rheinland Qualified Manufacturer
- Alibaba.com Verified Supplier
- Made-in-China Verified Supplier
- 1688 platforms Verified Supplier
- National High-tech Enterprise
- Changzhou High-Tech Product Certification
As a professional deep hole drill manufacturer, we strictly control the tool quality with excellent manufacturing and product compliance. These certifications prove our consistent tooling performance and long-term process stability.
Get instant Quote
- ISO9001:2008 Certified
- ISO9001:2015 Certified
- SGS Qualified Manufacturer
- TÜV Rheinland Qualified Manufacturer
- Alibaba.com Verified Supplier
- Made-in-China Verified Supplier
- 1688 platforms Verified Supplier
- National High-tech Enterprise
- Changzhou High-Tech Product Certification
As a professional deep hole drill manufacturer, we strictly control the tool quality with excellent manufacturing and product compliance. These certifications prove our consistent tooling performance and long-term process stability.
Get instant Quote
- ISO9001:2008 Certified
- ISO9001:2015 Certified
- SGS Qualified Manufacturer
- TÜV Rheinland Qualified Manufacturer
- Alibaba.com Verified Supplier
- Made-in-China Verified Supplier
- 1688 platforms Verified Supplier
- National High-tech Enterprise
- Changzhou High-Tech Product Certification
As a professional deep hole drill manufacturer, we strictly control the tool quality with excellent manufacturing and product compliance. These certifications prove our consistent tooling performance and long-term process stability.
Get instant Quote
- ISO9001:2008 Certified
- ISO9001:2015 Certified
- SGS Qualified Manufacturer
- TÜV Rheinland Qualified Manufacturer
- Alibaba.com Verified Supplier
- Made-in-China Verified Supplier
- 1688 platforms Verified Supplier
- National High-tech Enterprise
- Changzhou High-Tech Product Certification
As a professional deep hole drill manufacturer, we strictly control the tool quality with excellent manufacturing and product compliance. These certifications prove our consistent tooling performance and long-term process stability.
Get instant Quote
- ISO9001:2008 Certified
- ISO9001:2015 Certified
- SGS Qualified Manufacturer
- TÜV Rheinland Qualified Manufacturer
- Alibaba.com Verified Supplier
- Made-in-China Verified Supplier
- 1688 platforms Verified Supplier
- National High-tech Enterprise
- Changzhou High-Tech Product Certification
As a professional deep hole drill manufacturer, we strictly control the tool quality with excellent manufacturing and product compliance. These certifications prove our consistent tooling performance and long-term process stability.
Get instant Quote
- ISO9001:2008 Certified
- ISO9001:2015 Certified
- SGS Qualified Manufacturer
- TÜV Rheinland Qualified Manufacturer
- Alibaba.com Verified Supplier
- Made-in-China Verified Supplier
- 1688 platforms Verified Supplier
- National High-tech Enterprise
- Changzhou High-Tech Product Certification
As a professional deep hole drill manufacturer, we strictly control the tool quality with excellent manufacturing and product compliance. These certifications prove our consistent tooling performance and long-term process stability.
Get instant Quote

Technical Support & Tool Optimization

1. JINOO’s professional engineering team will offer you technical support based on our continuous training and tooling optimization.

2. 24/7 customer support and reliable after-sales services are provided for you to solve your tooling problems.

3. JINOO has offered up to 3 times regrinding services for deep hole drills, enabling their continuous cutting performance and saving your costs.
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Testimonials

“I am a wholesaler in the United States, and I have been working with JINOO for more than 9 years. I always gain professional support from their team. My clients are across different industries in aerospace, crankshaft, and general machining. JINOO’s carbide drill bits and deep hole drills have always gained good results during the working process with less tool costs, which is why I continue to choose and trust JINOO to be my best supplier in China.”
Carly Anderson
Owner, Wholesaler Company

FAQ about Deep Hole Drills

Can you provide customised solutions for Deep Hole Drills?

Yes, absolutely. You can send us your CAD graph directly so that our engineers can analyse it and produce it according to your required specifications. If you have special requirements about workpiece materials or special geometry design, you are also welcome to ask our team for more information. JINOO supports one-stop OEM services, and our engineers will design non-standard Deep Hole Drills to meet your demand.

Which coating do you apply to your Deep Hole Drills?

JINOO has collaborated with Oerlikon on the coating solutions. We usually apply the nano-coatings to our Deep Hole Drills, like AITiN-Nano, enabling us to achieve a maximum temperature of 1100 degrees, and wear and heat resistance. Our coating option depends on your machining requirements and different workpiece materials. Whether you want to process steel, non-ferrous metal, or hard-to-process materials, JINOO can offer you the most appropriate solutions for Deep Hole Drills.

What materials can your deep hole drilling machine drill?

JINOO’s D3000-series Deep Hole Drills can be used in versatile application scenarios. Whether you need to process carbon steel, alloy steel, hardened steel, aluminium alloy, or non-ferrous metal, our Deep Hole Drills can provide you with the most excellent cutting results. For other difficult-to-machine workpiece materials, JINOO can customize deep hole drills with specialized tool geometry and coatings to promote your drilling.

How can Deep Hole Drills gain maximum efficiency?

Deep hole drilling was the most difficult machining process compared with other drilling processes. The manufacturing process has strict requirements for Deep Hole Drills and the equipment. JINOO has the best machining suggestions if you want the perfect hole and an effective drilling process. The use of pilot drills and deep hole drills is the ideal combination. To extend the tool life, use the pilot drill first to perform the pre-drill actions and then apply the Deep Hole Drills for further drilling. In this way, maximum accuracy and minimum hole run-out can be achieved. If you want a detailed drilling plan, you are welcome to contact our professional teams. We will design both Deep Hole Drills and pilot drills for you!

What type of drill is used for deep holes?

JINOO’s Deep Hole Drills are the best choice for deep hole drilling. Our D3000-series can gain at least three times higher drilling efficiency compared with standard long drills, gun drills, and other deep hole drills in the market. At JINOO, quality and lifespan are always our priorities. Combined with top-grade carbide bar stocks, high wear resistance, and self-design geometry, our Deep Hole Drills have better durability, chip removal rates, and longer lifespan. Besides, you can attain our regrinding services up to 3 times, which raises the cost-effectiveness and precision for our clients.

How do I check whether my Deep Hole Drills achieve optimal performance?

Several things will affect the efficiency and performance of Deep Hole Drills. This is divided into two parts: one for the drills themselves and the other for the machinery during the working process.

Tool holding is always a significant point that needs to be focused on, especially in deep hole drilling. Manufacturers strongly suggest using high-quality and appropriate tool holding for tools.
For the machining equipment, it is necessary to ensure stability during the machining process. You should control the appropriate spindle speeds, coolant volume, and pressure for Deep Hole Drills to avoid workpiece clamping and use the correct spindle for horizontal or vertical machining.
The hole machining process should avoid the highest speed and low feed rates for the Deep Hole Drills. We suggest reducing the feed rates to x0.1, which can break into both the exit cross hole and the angled face.

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ABOUT US

JINOO Tools Group is a “National High-Tech Enterprise”, which was founded in 2006 and specializes in manufacturing high-precision solid carbide cutting tools with over 25,000㎡ manufacturing bases. Our cutting tools are widely used in the automotive, aerospace, and equipment manufacturing industries. We have accumulated over 50 national patents and passed the ISO:9001 certification, devoted to creating high-value cutting solutions for our customers.