GENERAL PURPOSE DRILL BITS

Solid Carbide General Purpose Drill Bits for Multi-Material Drilling.

D2100-Series

General Purpose Drill Bit Design Highlights

Solid Carbide Construction
Oerlikon TiAlSiN Coating Technology
140° Point Angle Design
Cutting Edge Preparation
Optimized Flute Geometry
Reinforced Web Core

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General Purpose Drill Bit Types

3×D Standard Twist Drill

Ideal for drilling moderate hole depth with high rigidity and precision.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
H: Hardened Steel
2 Flutes
3×D
Internal Coolant Design
External Coolant Design
Oerlikon HELICA High-performance Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
140° Point Angle
Solid Carbide Construction
M7

5×D Standard Twist Drill

Designed for machining deeper holes with superior chip evacuation.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
H: Hardened Steel
2 Flutes
5×D
Internal Coolant Design
External Coolant Design
Oerlikon HELICA High-performance Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
140° Point Angle
Solid Carbide Construction
M7

8×D Standard Twist Drill

Ideal for deep-hole drilling with high stability.

P: Steel
M: Stainless Steel
N: Non-ferrous
K: Cast Iron
H: Hardened Steel
2 Flutes
8×D
Internal Coolant Design
External Coolant Design
Oerlikon HELICA High-performance Coating
Drilling
DIN 6535-HA
Straight Shank
Right-Hand Cutting
140° Point Angle
Solid Carbide Construction
M7

D2100-Series

Why Choose Our General Purpose Drill Bits?

JINOO’s D2100-series general purpose drill bits for metal are suitable for universal machining with advanced features to reduce production costs.

Solid Carbide Construction

Our general-purpose drill bits are manufactured from 0.4μm ultra-fine grain solid carbide substrates with excellent hardness and structural toughness.

Oerlikon TiAlSiN Coating Technology

Our drill bits can be combined with Oerlikon HELICA TiAlSiN coatings to form uniform and wear-resistant surfaces.

140° Point Angle Design

They are designed with the 140° split point to promote precise tool centering and penetration stability.

Cutting Edge Preparation

Precisely-ground cutting edges are designed with controlled edge radius, delivering excellent edge integrity.

Optimized Flute Geometry

Optimized flutes are engineered with a moderate helix angle and polished flute surfaces, promoting the large-volume chip flow with less wear in drilling sticky materials.

Reinforced Web Core

The reinforced web core features enhanced web thickness, forming the rigid core structure.

General Purpose Drill Geometry Breakdown

1.Solid Carbide Construction for High Hardness

Our general-purpose drill bits with 0.4μm ultra-micrograin carbide substrates can deliver transverse rupture strength and higher edge stability.

2.Oerlikon TiAlSiN Coatings for Longer Lifespan

Oerlikon TiAlSiN nano-layer coatings can resist oxidation up to 900°C, extending their tool life by over 20% even under harsh conditions.

3.140° Point Angle Design for Precision Positioning

The precisely-ground 140° split point angle with a thinned chisel edge can decrease thrust forces with improved self-centering to enhance positioning accuracy.

4.Cutting Edge Preparation for Edge Integrity

Micro-honed cutting edges with controlled edge radius can enhance edge strength with minimal edge chipping.

5.Optimized Flute Geometry for Efficient Chip Flow

The optimized helix angle is typically designed from 30° to 35° with polished surfaces and larger chip space to improve chip flow and flute rigidity.

6.Reinforced Web Core for Higher Rigidity

The reinforced core structure can greatly enhance bending stiffness, further improving the flute volume for efficient chip evacuation.

Geometry-Breakdown-of-D2100-Series-General-Purpose-Drill-Bits

Technical Data

Ultra-fine Grain Substrate	0.4μm
Cutting Diameter Tolerance	M7
Coating	AlTiN + TiSiN / TiAlSiN-X / AlTiN / TiAlN / TiAlSiN / DLC / AlCrN / AlCrSiN / AlTiSiN / TiSiXN / Customised Available
Flute Number	2
Overall Length	50 / 60 / 75 / 100 / 150 / 200mm / Customised Length
Shank Diameter	4 / 6 / 8 / 10 / 12 / 14 / 16/ 18 / 20mm / Customised Diameter

D2100-Series

General Purpose Drill Bit Specifications

Standard General Purpose Drill Bit Size Range
Carbide Substrate
Quick Selection Guide
Recommended Cutting Parameters

Code		Diameter (mm)	Fraction Size	Diameter (in)	Shank Diameter (in)	Overal Length OAL(in)	Flute Length (in)	Max Cutting Depth (in)	Shank Length (in)
External Coolant	Internal Coolant	Diameter (mm)	Fraction Size	Diameter (in)	Shank Diameter (in)	Overal Length OAL(in)	Flute Length (in)	Max Cutting Depth (in)	Shank Length (in)
D2103-NHA-D03175	D2103-CHA-D03175	3.175	1/8	0.125	6	62	20	14	36
D2103-NHA-D03571	D2103-CHA-D03571	3.571	9/64	0.1406	6	62	20	14	36
D2103-NHA-D03970	D2103-CHA-D03970	3.97	5/32	0.1563	6	66	24	17	36
D2103-NHA-D04366	D2103-CHA-D04366	4.366	11/64	0.1719	6	66	24	17	36
D2103-NHA-D04763	D2103-CHA-D04763	4.763	3/16	0.1875	6	66	28	20	36
D2103-NHA-D05159	D2103-CHA-D05159	5.159	13/64	0.2031	6	66	28	20	36
D2103-NHA-D05558	D2103-CHA-D05558	5.558	7/32	0.2188	6	66	28	20	36
D2103-NHA-D05949	D2103-CHA-D05949	5.949	15/64	0.2344	6	66	28	20	36
D2103-NHA-D06350	D2103-CHA-D06350	6.35	1/4	0.25	8	79	34	24	36
D2103-NHA-D06746	D2103-CHA-D06746	6.746	17/64	0.2656	8	79	34	24	36
D2103-NHA-D07145	D2103-CHA-D07145	7.145	9/32	0.2813	8	79	41	29	36
D2103-NHA-D07541	D2103-CHA-D07541	7.541	19/64	0.2969	8	79	41	29	36
D2103-NHA-D07938	D2103-CHA-D07938	7.938	5/16	0.3125	8	79	41	29	36
D2103-NHA-D08344	D2103-CHA-D08344	8.334	21/64	0.3281	10	89	47	35	40
D2103-NHA-D08733	D2103-CHA-D08733	8.733	11/32	0.3438	10	89	47	35	40
D2103-NHA-D09129	D2103-CHA-D09129	9.129	23/64	0.3594	10	89	47	35	40
D2103-NHA-D09525	D2103-CHA-D09525	9.525	3/8	0.375	10	89	47	35	40
D2103-NHA-D09921	D2103-CHA-D09921	9.921	25/64	0.3906	10	89	47	35	40
D2103-NHA-D10320	D2103-CHA-D10320	10.32	13/32	0.4063	12	102	55	40	45
D2103-NHA-D10716	D2103-CHA-D10716	10.716	27/64	0.4219	12	102	55	40	45
D2103-NHA-D11111	D2103-CHA-D11111	11.111	7/16	0.4375	12	102	55	40	45
D2103-NHA-D11509	D2103-CHA-D11509	11.509	29/64	0.4531	12	102	55	40	45
D2103-NHA-D11908	D2103-CHA-D11908	11.908	15/32	0.4688	12	102	55	40	45
D2103-NHA-D12300	D2103-CHA-D12300	12.3	31/64	0.4843	14	107	60	43	45
D2103-NHA-D12700	D2103-CHA-D12700	12.7	1/2	0.5	14	107	60	43	45
D2103-NHA-D13100	D2103-CHA-D13100	13.1	33/64	0.5157	14	107	60	43	45
D2103-NHA-D13891	D2103-CHA-D13891	13.891	35/64	0.5469	14	107	60	43	45
D2103-NHA-D14288	D2103-CHA-D14288	14.288	9/16	0.5625	16	115	65	45	48
D2103-NHA-D14684	D2103-CHA-D14684	14.684	37/64	0.5781	16	115	65	45	48
D2103-NHA-D15083	D2103-CHA-D15083	15.083	19/32	0.5938	16	115	65	45	48
D2103-NHA-D15479	D2103-CHA-D15479	15.479	39/64	0.6094	16	115	65	45	48
D2103-NHA-D15875	D2103-CHA-D15875	15.875	5/8	0.625	16	115	65	45	48
D2103-NHA-D17463	D2103-CHA-D17463	17.463	11/16	0.6875	18	123	73	51	48
D2103-NHA-D19050	D2103-CHA-D19050	19.05	3/4	0.75	20	131	79	55	50


Code		Diameter (mm)	Fraction Size	Diameter (in)	Shank Diameter (in)	Overal Length OAL(in)	Flute Length (in)	Max Cutting Depth (in)	Shank Length (in)
External Coolant	Internal Coolant	Diameter (mm)	Fraction Size	Diameter (in)	Shank Diameter (in)	Overal Length OAL(in)	Flute Length (in)	Max Cutting Depth (in)	Shank Length (in)
D2105-NHA-D03175	D2105-CHA-D03175	3.175	1/8	0.125	6	62	28	23	36
D2105-NHA-D03571	D2105-CHA-D03571	3.571	9/64	0.1406	6	66	28	23	36
D2105-NHA-D03970	D2105-CHA-D03970	3.97	5/32	0.1563	6	74	36	29	36
D2105-NHA-D04366	D2105-CHA-D04366	4.366	11/64	0.1719	6	74	36	29	36
D2105-NHA-D04763	D2105-CHA-D04763	4.763	3/16	0.1875	6	82	44	35	36
D2105-NHA-D05159	D2105-CHA-D05159	5.159	13/64	0.2031	6	82	44	35	36
D2105-NHA-D05558	D2105-CHA-D05558	5.558	7/32	0.2188	6	82	44	35	36
D2105-NHA-D05949	D2105-CHA-D05949	5.949	15/64	0.2342	6	82	44	35	36
D2105-NHA-D06350	D2105-CHA-D06350	6.35	1/4	0.25	8	91	53	43	36
D2105-NHA-D06746	D2105-CHA-D06746	6.746	17/64	0.2656	8	91	53	43	36
D2105-NHA-D07145	D2105-CHA-D07145	7.145	9/32	0.2813	8	91	53	43	36
D2105-NHA-D07541	D2105-CHA-D07541	7.541	19/64	0.2969	8	91	53	43	36
D2105-NHA-D07938	D2105-CHA-D07938	7.938	5/16	0.3125	8	91	53	43	36
D2105-NHA-D08344	D2105-CHA-D08344	8.344	21/64	0.3281	10	103	61	49	40
D2105-NHA-D08733	D2105-CHA-D08733	8.733	11/32	0.3438	10	103	61	49	40
D2105-NHA-D09129	D2105-CHA-D09129	9.129	23/64	0.3594	10	103	61	49	40
D2105-NHA-D09525	D2105-CHA-D09525	9.525	3/8	0.375	10	103	61	49	40
D2105-NHA-D09921	D2105-CHA-D09921	9.921	25/64	0.3906	10	103	61	49	40
D2105-NHA-D10320	D2105-CHA-D10320	10.32	13/32	0.4063	12	118	71	56	45
D2105-NHA-D10716	D2105-CHA-D10716	10.716	27/64	0.4219	12	118	71	56	45
D2105-NHA-D11111	D2105-CHA-D11111	11.111	7/16	0.4374	12	118	71	56	45
D2105-NHA-D11509	D2105-CHA-D11509	11.509	29/64	0.4531	12	118	71	56	45
D2105-NHA-D11908	D2105-CHA-D11908	11.908	15/32	0.4688	12	118	71	56	45
D2105-NHA-D12300	D2105-CHA-D12300	12.3	31/64	0.4843	14	124	77	60	45
D2105-NHA-D12700	D2105-CHA-D12700	12.7	1/2	0.5	14	124	77	60	45
D2105-NHA-D13100	D2105-CHA-D13100	13.1	33/64	0.5157	14	124	77	60	45
D2105-NHA-D13891	D2105-CHA-D13891	13.891	35/64	0.5469	14	124	77	60	45
D2105-NHA-D14288	D2105-CHA-D14288	14.288	9/16	0.5625	16	133	83	63	48
D2105-NHA-D14684	D2105-CHA-D14684	14.684	37/64	0.5781	16	133	83	63	48
D2105-NHA-D15083	D2105-CHA-D15083	15.083	19/32	0.5938	16	133	83	63	48
D2105-NHA-D15479	D2105-CHA-D15479	15.479	39/64	0.6094	16	133	83	63	48
D2105-NHA-D15875	D2105-CHA-D15875	15.875	5/8	0.625	16	133	83	63	48
D2105-NHA-D17463	D2105-CHA-D17463	17.463	11/16	0.6875	18	143	93	71	48
D2105-NHA-D19050	D2105-CHA-D19050	19.05	3/4	0.75	20	153	101	77	50

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

ISO	Workpiece Materials	Workpiece Materials	Brinell Hardness HB	Rockwell Hardness HRC	Coolant Type	Cutting Speed Vc (m/min)	Drill Bits Diameter d (mm) – 3	Drill Bits Diameter d (mm) – 4	Drill Bits Diameter d (mm) – 6	Drill Bits Diameter d (mm) – 8	Drill Bits Diameter d (mm) – 10
P1	Steel Parts	Free-Cutting Steel	<125	–	External/Internal Coolant	90	100	0.07	0.1	0.13	0.16
P2	Steel Parts	Low Carbon Steel (C≤0.25%)	<125	–	External/Internal Coolant	90	100	0.07	0.1	0.13	0.16
P4	Steel Parts	Medium Carbon Steel (C>0.25%)	<220	<25	External/Internal Coolant	85	100	0.07	0.1	0.13	0.16
P5	Steel Parts	Low Alloy Steel	<220	<25	External/Internal Coolant	85	100	0.07	0.1	0.13	0.16
P5	Steel Parts	Alloy Steel, Quenched and Tempered Steel	<330	28-35	External/Internal Coolant	85	100	0.07	0.1	0.13	0.16
P11	Steel Parts	Ferritic Steels/ Martensitic Stainless Steels	250-250	38-50	External/Internal Coolant	60	60	0.07	0.1	0.12	0.14
H5	Hardened Materials	Quenched and Tempered Steel	–	35-40	External/Internal Coolant	45	60	0.07	0.1	0.12	0.14
H12	Hardened Materials	Hardened Stainless Steel	–	33-50	External/Internal Coolant	45	45	0.05	0.06	0.08	0.11
M1	Stainless Steel	Austenitic Stainless Steel	<150	–	External/Internal Coolant	60	60	0.07	0.1	0.12	0.14
M2	Stainless Steel	High-Strength Austenitic Stainless Steel	150-230	–	External/Internal Coolant	55	55	0.07	0.1	0.12	0.14
M4	Stainless Steel	Duplex Stainless Steel	135-275	–	External/Internal Coolant	45	45	0.05	0.06	0.08	0.11
S1	Heat & Titanium Alloy	Iron-Based Superalloy	160-260	25-48	–	25	–	0.04	0.05	0.06	0.08
S2	Heat & Titanium Alloy	Cobalt-Based Superalloy	250-450	25-48	–	25	–	0.04	0.05	0.06	0.08
S3	Heat & Titanium Alloy	Nickel-Based Superalloy	160-450	–	–	25	–	0.04	0.05	0.06	0.08
S11	Heat & Titanium Alloy	Titanium Alloy (Low Alloy)	250-350	33-38	–	40	–	0.05	0.06	0.08	0.11
S13	Heat & Titanium Alloy	Titanium Alloy (High Alloy)	300-400	36-48	–	32	–	0.04	0.05	0.06	0.08
K1	Cast Iron	Gray Cast Iron	120-290	<32	External/Internal Coolant	90	100	0.07	0.1	0.13	0.16
K2	Cast Iron	Compacted Graphite Iron (CGI)	120-290	<32	External/Internal Coolant	90	100	0.07	0.1	0.13	0.16
K3	Cast Iron	Malleable Cast Iron	130-260	<28	External/Internal Coolant	90	100	0.07	0.1	0.13	0.16
K4	Cast Iron	Ductile Cast Iron	180-350	<43	External/Internal Coolant	70	80	0.07	0.1	0.13	0.16

General Purpose Drill Bit Application Cases

16.7% Higher Productivity in Automotive Flange Shaft Machining

Background

The automotive flange shaft is manufactured from XC45 medium carbon steel of HB180 to 227, connecting the gearbox, transfer case, and drive shafts.

Challenge

Workpiece: Automotive flange shaft
Material: XC45 steel
Hardness: HB180–227
Hole Type: Through hole of Ø8.6 mm
Hole Depth: 30 mm
Requirement: Longer tool life with superior hole accuracy and higher efficiency.

Solution

Tool Used: D2100-Series 5×D General Purpose Carbide Drill Bit
Spindle Speed: 2,700–3,300 rpm
Feed Rate: 0.20–0.30 mm/rev
Cooling: External coolant
Machine: DMG CTX310 ECO CNC lathe

Results

Each General Purpose Drill Bit can be used to machine 1400 flange shafts, which is 200 more than the competitor’s drill bit. 16.7% higher productivity can be achieved with less tool change frequency and higher hole accuracy.

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16.7% Higher Productivity in Automotive Flange Shaft Machining

40% Longer Tool Life in Hydraulic Fitting Cross-Hole Drilling

Background

Hydraulic fittings are made from 45# carbon steel with hardness from HB120 to 140, connecting high-pressure hydraulic pipelines

Challenge

Workpiece: Hydraulic fitting
Material: 45# carbon steel
Hardness: HB120–140
Hole Type: Cross through hole
Hole Diameter: Ø12.5 mm
Hole Depth: 92.4 mm
Requirement: Extended drill bit life with superior drilling stability in intersecting holes.

Solution

Tool Used: D2100-Series 5×D General Purpose Carbide Drill Bit
Spindle Speed: 2,200 rpm
Feed Rate: 264–484–264 mm/min
Cooling: Internal coolant

Results

Compared with the previous drill bit customers used for drilling 50 meters, our General Purpose Drill Bits can achieve over 70 meters of drilling with nearly 40% extended tool service life. Hence, fewer tool changes can be ensured with higher edge strength.

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How JINOO Manufactures General Purpose Drill Bits?

Precision CNC Grinding Machines

- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
JINOO has formed the perfect manufacturing ecosystem for general-purpose drill bits. We utilize advanced machinery from Germany, Australia, and Switzerland to maintain stable production.
Get instant Quote
- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
JINOO has formed the perfect manufacturing ecosystem for general-purpose drill bits. We utilize advanced machinery from Germany, Australia, and Switzerland to maintain stable production.
Get instant Quote
- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
JINOO has formed the perfect manufacturing ecosystem for general-purpose drill bits. We utilize advanced machinery from Germany, Australia, and Switzerland to maintain stable production.
Get instant Quote
- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
JINOO has formed the perfect manufacturing ecosystem for general-purpose drill bits. We utilize advanced machinery from Germany, Australia, and Switzerland to maintain stable production.
Get instant Quote
- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
JINOO has formed the perfect manufacturing ecosystem for general-purpose drill bits. We utilize advanced machinery from Germany, Australia, and Switzerland to maintain stable production.
Get instant Quote
- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
JINOO has formed the perfect manufacturing ecosystem for general-purpose drill bits. We utilize advanced machinery from Germany, Australia, and Switzerland to maintain stable production.
Get instant Quote

Advanced Quality Inspection System

1. ZOLLER G3 Tool Measurement: Applied for the comprehensive inspection of the tool geometry of general-purpose drill bits, such as the drill bit dimensions, point angles, and flutes, with measurement tolerances within ±2 μm.

2. PG1000 Optical Inspection: The microscopic optical inspection is applied for the verification of precise edge preparation, ensuring the surface integrity, and identifying possible microscopic defects.

3. Parlec Tool Presetting: Used to evaluate the tool length, runout values, and clamping position consistency, ensuring the stable machine compatibility and assembly before shipment.

We have introduced the professional quality inspection system with the use of advanced testing equipment. Since 2010, we have employed the ERP traceability system to oversee every tool production stage.

Get instant Quote
1. ZOLLER G3 Tool Measurement: Applied for the comprehensive inspection of the tool geometry of general-purpose drill bits, such as the drill bit dimensions, point angles, and flutes, with measurement tolerances within ±2 μm.

2. PG1000 Optical Inspection: The microscopic optical inspection is applied for the verification of precise edge preparation, ensuring the surface integrity, and identifying possible microscopic defects.

3. Parlec Tool Presetting: Used to evaluate the tool length, runout values, and clamping position consistency, ensuring the stable machine compatibility and assembly before shipment.

We have introduced the professional quality inspection system with the use of advanced testing equipment. Since 2010, we have employed the ERP traceability system to oversee every tool production stage.

Get instant Quote
1. ZOLLER G3 Tool Measurement: Applied for the comprehensive inspection of the tool geometry of general-purpose drill bits, such as the drill bit dimensions, point angles, and flutes, with measurement tolerances within ±2 μm.

2. PG1000 Optical Inspection: The microscopic optical inspection is applied for the verification of precise edge preparation, ensuring the surface integrity, and identifying possible microscopic defects.

3. Parlec Tool Presetting: Used to evaluate the tool length, runout values, and clamping position consistency, ensuring the stable machine compatibility and assembly before shipment.

We have introduced the professional quality inspection system with the use of advanced testing equipment. Since 2010, we have employed the ERP traceability system to oversee every tool production stage.
Get instant Quote

Fine-grain Carbide Tool Material

1.JINOO sources the high-grade carbide tool materials from well-renowned raw material suppliers such as GESAC, Kennametal, Sandvik, Gühring, and CB Ceratizit.

2.Featuring these high-purity carbide substrates, our general-purpose drill bits can have superior heat and wear resistance.

3.The cobalt content in our tungsten carbide can typically be between 10% and 12% to ensure excellent toughness.

4.The tool life of general-purpose drill bits can be greatly enhanced by approximately 1.5 times.

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Virgin Carbide Instead of Recycled Carbide

JINOO’s Virgin Carbide used in our general-purpose drill bits:
- High rigidity
- High durability
- Fine grains
- No pores or impurities
- Longer tool life
- Dense structure
- Superior wear resistance
Competitor’s Inferior Recycled Carbide:
- Inconsistent grains
- Lower wear resistance
- Non-uniform grain size
- Pure structure
- Loose structure
- Short tool life
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Reliable Coating Partners

1.JINOO employs the world-class coatings from Oerlikon Balzers.

2.We can offer you a wide range of coatings to be combined with general-purpose drill bits to improve their cutting performance.

3.Combined with advanced coatings, our general-purpose drill bits can greatly improve heat and wear resistance, further extending tool life under heavy-duty manufacturing.

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High-performance Coating vs. Poor-quality Coating

High-quality coatings used in our general-purpose drill bits:
- Uniform texture
- Fine grains
- Strong adhesion
- Tight tolerances
- High density
- Fine surface finishes
Competitor’s inferior coatings used in low-grade drill bits:
- Weak adhesion
- Poor density
- Uneven thickness
- Loose structures
- Rapid tool wear
- Short tool life
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ISO 9001 Quality Management System

- 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
JINOO insists on utilizing the high-quality carbide raw material with strict quality inspection. In addition, our general-purpose drill bits are exported to North America, Europe, and the Middle East with approvals from SGS and TÜV Rheinland.
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- 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
JINOO insists on utilizing the high-quality carbide raw material with strict quality inspection. In addition, our general-purpose drill bits are exported to North America, Europe, and the Middle East with approvals from SGS and TÜV Rheinland.
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
JINOO insists on utilizing the high-quality carbide raw material with strict quality inspection. In addition, our general-purpose drill bits are exported to North America, Europe, and the Middle East with approvals from SGS and TÜV Rheinland.
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
JINOO insists on utilizing the high-quality carbide raw material with strict quality inspection. In addition, our general-purpose drill bits are exported to North America, Europe, and the Middle East with approvals from SGS and TÜV Rheinland.
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
JINOO insists on utilizing the high-quality carbide raw material with strict quality inspection. In addition, our general-purpose drill bits are exported to North America, Europe, and the Middle East with approvals from SGS and TÜV Rheinland.
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
JINOO insists on utilizing the high-quality carbide raw material with strict quality inspection. In addition, our general-purpose drill bits are exported to North America, Europe, and the Middle East with approvals from SGS and TÜV Rheinland.
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
JINOO insists on utilizing the high-quality carbide raw material with strict quality inspection. In addition, our general-purpose drill bits are exported to North America, Europe, and the Middle East with approvals from SGS and TÜV Rheinland.
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
JINOO insists on utilizing the high-quality carbide raw material with strict quality inspection. In addition, our general-purpose drill bits are exported to North America, Europe, and the Middle East with approvals from SGS and TÜV Rheinland.
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
JINOO insists on utilizing the high-quality carbide raw material with strict quality inspection. In addition, our general-purpose drill bits are exported to North America, Europe, and the Middle East with approvals from SGS and TÜV Rheinland.
Get instant Quote

Technical Support & Tool Optimization

1.We can provide you with reliable OEM and ODM services to satisfy your requirements.

2.The flexible MOQ can be only 1 for our general-purpose drill bits based on our sufficient inventory.

3.Regrinding and resharpening services are provided for you to ensure lower tooling costs with higher edge consistency.

4.We can offer you professional technical support to solve your tooling problems.
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Testimonials

“I demand drill bits in various machining scenarios and usually use them to machine steel, cast iron, and metal parts. When I tried JINOO’s general purpose drill bits for the first time, their amazing efficiency significantly increased my productivity. Their advanced geometry design and high-quality-price ratios enable them to excel when machining various materials, so I will continue to choose them.”
James Thomson
Head of Purchasing

FAQ about General Purpose Drill Bits

Do you provide customized services for general purpose drill bits?

Of course! We furnish premium customization of our general purpose drill bits beyond standard sizes. Factors like materials, diameter, flute length, and the coatings of JINOO’s General Purpose Drill Bits can all be modified according to your needs, and we will offer you the cutting-edge solutions to ensure an outstanding user experience.

What is the lead time for production of general purpose drill bits?

Our production times for general purpose drill bits will normally be between 7 and 15 days because of the premium carbide bar stocks, which need to be shipped from Germany. As for the lead time, we work with world-famous postal companies such as DHL, FedEx, and UPS to secure the timely delivery.

What payment methods do you accept for general purpose drill bits?

The payment method of our general purpose drill bits can be flexible; we accept most payment methods, such as bank transfer, credit card, and PayPal. However, if you have other requirements about the payment method, you can contact our sales team for more details.

What are general-purpose drill bits used for?

General-Purpose Drill Bits are not the type of drill bits that specialize in one product; they will not be tailored to specific machining tasks. Our general-purpose drill bits are ideal for machining through, clearance, and pilot holes in a wide range of materials, including aluminum, steel parts, and cast iron. They are really suitable for batch production with fewer tool changes and lower production costs. Hence, it will become more economical and practical for you to choose from the standard tool inventory of drill bits.

How could you guarantee the quality of General Purpose Drill Bits?

Quality has always been the first priority in JINOO, and we have been committed to ensuring high-quality standards since our establishment. The quality assurance for General Purpose Drill Bits will start from selecting carbide rods to the detailed inspection and geometry check. After we import the carbide rod from GESAC and Guhring, we will process the chemical components tests, physical performance tests, and geometry simulation tests to ensure the quality of bar stocks is in perfect condition before producing general-purpose drill bits. After the production finishes, we will divide the tools into different quality check categories to check their geometry and detailed specifications. We are also willing to provide you with thorough quality assurance reports if you would like.

How could you support the regrinding services?

JINOO has been offering regrinding services since 2010. Each general-purpose drill bit is able to accept regrinding up to three times to maintain excellent performance at the original. If your drill bits experience quick depletion during machining, you could contact our after-sales team to communicate the regrinding services for your tools, which could significantly reduce your production costs and more profit-margin for you!

How to choose the right carbide drill bit for different materials?

Steel and stainless steel

In machining steel and stainless steel, solid carbide drill bits designed with a 140° point angle and high-performance coating such as TiAlSiN or HELICA will be suitable for improving heat and wear resistance.

Cast iron

For machining cast iron, carbide drill bits with a lower helix angle can achieve superior chip control and wear resistance.

Aluminum and non-ferrous metals

You need to choose carbide drill bits with sharp cutting edges and a higher helix to achieve smoother chip flow.

Hardened steel

Solid carbide drill bits with durable coatings are essential for machining hardened steel to ensure excellent heat resistance.

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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. We are also a professional drill bit manufacturer with general-purpose drill bits widely used in the automotive, aerospace, and equipment manufacturing industries. We have accumulated over 50 national patents, devoted to creating high-value cutting solutions for our customers.