3-FLUTE DRILL BIT

Solid Carbide 3-Flute Drill Bits for Higher Productivity.

D5200-Series

3-Flute Drill Bit Design Highlights

Solid Carbide Construction
Oerlikon AITiN Coating Technology
150° Self-Centering Point Design
Cutting Edge Preparation
Three Helical Flutes Geometry
Reinforced Web Core

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3-Flute Drill Bit Types

3×D External Coolant Straight Shank 3-Flute Drill

Suitable for drilling shallow holes with high tool rigidity and superior productivity.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
Oerlikon AITiN Coating
3 Flutes
Drilling
3×D
External Coolant Design
DIN 6535-HA
Straight Shank
Right-Hand Cutting
150° Point Angle
Solid Carbide Construction

5×D External Coolant Straight Shank 3-Flute Drill

Designed for drilling medium-depth holes with efficient chip flow and higher drilling stability.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
Oerlikon AITiN Coating
3 Flutes
Drilling
5×D
External Coolant Design
DIN 6535-HA
Straight Shank
Right-Hand Cutting
150° Point Angle
Solid Carbide Construction

8×D External Coolant Straight Shank 3-Flute Drill

Engineered for drilling deeper holes with optimized tool geometry and consistent hole accuracy.

P: Steel
M: Stainless Steel
K: Cast Iron
N: Non-ferrous
Oerlikon AITiN Coating
3 Flutes
Drilling
8×D
External Coolant Design
DIN 6535-HA
Straight Shank
Right-Hand Cutting
150° Point Angle
Solid Carbide Construction

D5200-Series

Why Choose Our 3-Flute Drill Bits?

The cutting performance of our D2500-series 3-Flute Drill Bits is significantly improved with high stability and efficiency.

Solid Carbide Construction

JINOO’s 3-flute drill bits are manufactured from fine-grain carbide substrates with excellent hardness and toughness.

Oerlikon AITiN Coating Technology

We use advanced AITiN coatings to form the protective layer on 3-flute drill bits with higher hot hardness and heat resistance.

150° Self-Centering Point Design

Our 3-flute drill bits are designed with a 150° point angle, enabling higher edge strength and less edge chipping.

Cutting Edge Preparation

Featuring precise cutting-edge preparation, our 3-flute drill bits can resist edge breakage with the micro chamfer.

Three Helical Flutes Geometry

Designed with three optimized flutes, our drill bits have a larger chip space to promote the chip flow.

Reinforced Web Core

The web core reinforcement promotes the bending rigidity of 3-flute drill bits to resist radial deformation in drilling.

3-Flute Drill Bit Geometry Breakdown

1.Solid Carbide Construction for Higher Strength
0.2 μm fine-grain carbide substrates enhance the hardness and toughness of 3-flute drill bits, improving thermal stability in high-speed drilling.

2.Oerlikon AITiN Coatings for Less Friction
Oerlikon high-performance coatings can improve the drill bit life and significantly decrease the friction in mass production.

3.150° Self-Centering Point Design for Positioning Accuracy
The 150° point angle enhances edge strength, ensuring excellent positioning accuracy and drilling stability.

4.Cutting Edge Preparation for Minimal Micro-Chipping
Micro-honed cutting edges enhance the edge strength to resist edge breakage, extending their tool life and drilling stability.

5.Three Helical Flutes Geometry for Chip Evacuation
Polished and enlarged flutes can improve chip evacuation to deliver efficient drilling and avoid secondary cutting in intersecting holes and inclined exits.

6.Reinforced Web Core for Less Deflection
The reinforced web core structure can enhance tool rigidity and resist tool deflection to achieve excellent hole accuracy and straightness.

Geometry Breakdown of D5200-Series 3-Flute Drill Bits

Technical Data

Ultra-fine Grain Substrate	0.2μm / 0.4μm / 0.6μm/ 0.8μm
Cutting Diameter Tolerance	H6
Coating	AlTiN + TiSiN / TiAlSiN-X / AlTiN / TiAlN / TiAlSiN / DLC / AlCrN / AlCrSiN / AlTiSiN / TiSiXN / Customized Available
Flute Number	3
Overall Length	50 / 60 / 75 / 100 / 150 / 200mm / Customised Length
Shank Diameter	4 / 6 / 8 / 10 / 12 / 14 / 16/ 18 / 20mm / Customised Diameter

D5200-Series

3-Flute Drill Bit Specifications

Custom 3-Flute Drill Bit Size Range
Carbide Substrate
Quick Selection Guide
Recommended Cutting Parameters

Code	Cutting Diameter d1(h7)	Thread Size Metric (M) Size	Shank Diameter d2(h6)	Total Length l1	Flute Length l2	Maximum Cutting Depth l3
D5203-NYZ-D0750	7.5	7.5	7.5	74	34	25
D5203-NYZ-D0780	7.8	7.8	7.8	79	37	27
D5203-NYZ-D0800	8	8	8	79	37	27
D5203-NYZ-D0810	8.1	8.1	8.1	79	37	27
D5203-NYZ-D0820	8.2	8.2	8.2	79	37	27
D5203-NYZ-D0840	8.4	8.4	8.4	79	37	27
D5203-NYZ-D0850	8.5	8.5	8.5	79	37	27
D5203-NYZ-D0860	8.6	8.6	8.6	84	40	29
D5203-NYZ-D0870	8.7	8.7	8.7	84	40	29
D5203-NYZ-D0880	8.8	8.8	8.8	84	40	29
D5203-NYZ-D0900	9	9	9	84	40	29
D5203-NYZ-D0950	9.5	9.5	9.5	84	40	29
D5203-NYZ-D0980	9.8	9.8	9.8	89	43	31
D5203-NYZ-D1000	10	10	10	89	43	31
D5203-NYZ-D1010	10.1	10.1	10.1	89	43	31
D5203-NYZ-D1020	10.2	10.2	10.2	89	43	31
D5203-NYZ-D1040	10.4	10.4	10.4	89	43	31
D5203-NYZ-D1050	10.5	10.5	10.5	89	43	31
D5203-NYZ-D1100	11	11	11	95	47	33
D5203-NYZ-D1200	12	12	12	102	51	35
D5203-NYZ-D1300	13	13	13	102	51	35
D5203-NYZ-D1400	14	14	14	107	54	37
D5203-NYZ-D1500	15	15	15	111	54	37
D5203-NYZ-D1750	17.5	17.5	17.5	123	62	40
D5203-NYZ-D1950	19.5	19.5	19.5	131	66	42
D5203-NYZ-D2000	20	20	20	131	66	42

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		Workpiece Materials	Type
P	P1	Free-Cutting Steel	D2100 / D2200 / D2300 / D2400 / D2600 / D3000 / D5200 / D9100
	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	D2100 / D2200 / D2300 / D2400 / D2600 / D3000
	H7	Bearing Steel
	H8	Tool Steel, High Speed Steel
	H12	Hardened Stainless Steel
	H21	Zinc-Plated Steel
M	M1	Austenitic Stainless Steel	D2100 / D2200 / D2400 / D2600 / D3000 / D5200 / D9100
	M2	High-Strength Austenitic Stainless Steel
	M4	Duplex Stainless Steel
S	S1	Iron-Based Superalloy	D2600 / D9100
	S2	Cobalt-Based Superalloy
	S3	Nickel-Based Superalloy
	S11	Titanium Alloy (Low Alloy)
	S13	Titanium Alloy (High Alloy)
K	K1	Gray Cast Iron	D2100 / D2200 / D2300 / D2400 / D3000 / D5200 / D7200 / D9100
	K2	Compacted Graphite Iron（CGI）
	K3	Malleable Cast Iron
	K4	Ductile Cast Iron
N	N1	Aluminum-Silicon Alloy,Silicon content<9%	D2500 / D2600 / D5200 / D7200 / D9100
	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

Carbide Substrate
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 (ISO)	Workpiece Materials	Brinell Hardness HB	Rockwell Hardness HRC	Cutting Speed Vc (m/min)		Feed Per Revolution f (mm/rev) Drill Bits Diameter d
Materials (ISO)	Workpiece Materials	Brinell Hardness HB	Rockwell Hardness HRC	External Coolant	Internal Coolant	3	4	6	8	10	12	14	16	18	20
P1	Free-Cutting Steel	<125		100	110	0.11	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55
P2	Low Carbon Steel ( C<0.25% )	<125		100	110	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55
P4	Medium Carbon Steel(0.25%<C<0.6%)	<220	<25	100	110	0.11	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55
P4	Low Alloy Steel	<230	<30	100	110	0.11	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55
P5	Alloy Steel, Quenched and Tempered Steel	330-370	28-35	100	111	0.11	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55
P6	High Carbon Steel ( C>0.6% )	<375	45-65	85	100
H11	Quenched and Tempered Steel		35-40	85	111	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55	0.55
K1	Gray Cast Iron	120-200	<32	100	110	0.11	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55
K2	Compacted Graphite Iron ( CGI )	120-260	<32	100	111	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55	0.55
K3	Malleable Cast Iron	130-260	<28	100	111	0.11	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55
K4	Ductile Cast Iron	180-350	<43	90	90	0.14	0.2	0.26	0.32	0.35	0.4	0.45	0.5	0.55	0.55

3-Flute Drill Bit Application Cases

Higher Efficiency of Carbon Steel Component Drilling

Background

An automotive supplier manufactured accurate through-holes in carbon steel parts. They first used 2-flute carbide drills with inferior productivity and excessive tool wear.

Challenge

Workpiece: Automotive Steel Component
Material: Carbon Steel (S50C)
Hardness: HB 190
Hole Type: Through Hole
Hole Depth: 3×D
Requirement: Superior machining efficiency with higher feed rates and smooth chip flow.

Solution

Tool Used: Ø7.01 mm Solid Carbide 3-Flute Drill (TiAlN Coated)
Coolant Type: External Coolant
Machine Tool: Vertical Machining Center
Spindle Speed: 3,400 rpm
Feed Rate: 1,000 mm/min (0.294 mm/rev)

Results

Our 3-flute drill bits can create 4,000 holes per tool with surface finishes ranging from Ra 1.6 to 3.2 μm, ensuring smooth chip evacuation with higher hole consistency.

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How JINOO Manufactures 3-Flute Drill Bits?

Precision CNC Grinding Machines

- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
These advanced 5-axis grinding machines can ensure the accurate and efficient manufacturing of 3-flute drill bits, enabling their sharp cutting edges and accurate tool geometry.
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- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
These advanced 5-axis grinding machines can ensure the accurate and efficient manufacturing of 3-flute drill bits, enabling their sharp cutting edges and accurate tool geometry.
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- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
These advanced 5-axis grinding machines can ensure the accurate and efficient manufacturing of 3-flute drill bits, enabling their sharp cutting edges and accurate tool geometry.
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- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
These advanced 5-axis grinding machines can ensure the accurate and efficient manufacturing of 3-flute drill bits, enabling their sharp cutting edges and accurate tool geometry.
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- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
These advanced 5-axis grinding machines can ensure the accurate and efficient manufacturing of 3-flute drill bits, enabling their sharp cutting edges and accurate tool geometry.
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- WALTER Helitronic Power 400L
- WALTER Helitronic Vision 400L
- WALTER Helitronic Micro 400L
- Rollomatic NP5
- ANCA MX5
- ANCA MX7
These advanced 5-axis grinding machines can ensure the accurate and efficient manufacturing of 3-flute drill bits, enabling their sharp cutting edges and accurate tool geometry.
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Advanced Quality Inspection System

1. ZOLLER G3 Tool Measurement: Applied for verifying the geometry design, like the point angle precision, flute symmetry, and margin dimensions of 3-flute drill bits to control the measurement tolerances down to ±2 μm.

2. PG1000 Optical Inspection: After inspecting drill dimensions, we will perform the microscopic examination to ensure the precise edge preparation and surface integrity without possible edge defects.

3. Parlec Tool Presetting: Before final shipment, we will examine the tool length of 3-flute drill bits, controlling the rotational runout within 3 μm to ensure the positioning accuracy.

The quality inspection system is used to ensure the unmatched quality control of 3-flute drill bits with tight tolerances.
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1. ZOLLER G3 Tool Measurement: Applied for verifying the geometry design, like the point angle precision, flute symmetry, and margin dimensions of 3-flute drill bits to control the measurement tolerances down to ±2 μm.

2. PG1000 Optical Inspection: After inspecting drill dimensions, we will perform the microscopic examination to ensure the precise edge preparation and surface integrity without possible edge defects.

3. Parlec Tool Presetting: Before final shipment, we will examine the tool length of 3-flute drill bits, controlling the rotational runout within 3 μm to ensure the positioning accuracy.

The quality inspection system is used to ensure the unmatched quality control of 3-flute drill bits with tight tolerances.
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1. ZOLLER G3 Tool Measurement: Applied for verifying the geometry design, like the point angle precision, flute symmetry, and margin dimensions of 3-flute drill bits to control the measurement tolerances down to ±2 μm.

2. PG1000 Optical Inspection: After inspecting drill dimensions, we will perform the microscopic examination to ensure the precise edge preparation and surface integrity without possible edge defects.

3. Parlec Tool Presetting: Before final shipment, we will examine the tool length of 3-flute drill bits, controlling the rotational runout within 3 μm to ensure the positioning accuracy.

The quality inspection system is used to ensure the unmatched quality control of 3-flute drill bits with tight tolerances.
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Fine-grain Carbide Tool Material

1.Our high-performance 3-flute drill bits are manufactured from high-quality carbide substrates, which are sourced from GESAC, Kennametal, Sandvik, Gühring, and CB Ceratizit.

2.The durable carbide substrates demonstrate superior heat and wear resistance with high density and durability.

3.The cobalt content in our virgin carbide ranges from 10% to 12% to ensure excellent toughness.

4.The tool service life of 3-flute drill bits is greatly extended by more than 1.5 times.
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Virgin Carbide Instead of Recycled Carbide

JINOO’s Virgin Carbide used in our 3-flute drill bits:
- Uniform grain size
- No impurities
- Longer tool life
- High stability
- High density
- Pure structure
Competitor’s Inferior Recycled Carbide:
- Uneven grain size
- Many impurities
- Short tool life
- Unstable performance
- Low density
- Prone to tool breakage
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Reliable Coating Partners

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

2.These advanced coatings can significantly enhance the cutting performance of 3-flute drill bits with high heat and wear resistance.

3.Smooth drilling can be achieved with less tool friction.
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High-performance Coating vs. Poor-quality Coating

High-quality coatings used in our 3-flute drill bits:
- Strong adhesion
- Uniform coating thickness
- Tight tolerances
- High density
- No pores
- Excellent wear resistance
Competitor’s inferior coatings used in low-grade drill bits:
- Weak adhesion
- Non-uniform coating thickness
- Loose structure
- Lower density
- Prone to corrosion
- Poor surface finishes
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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 is a professional 3-flute drill bit manufacturer with standardized manufacturing procedures and continuous tooling improvement. These certifications can prove our long-term quality, stability, and production capabilities.
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 is a professional 3-flute drill bit manufacturer with standardized manufacturing procedures and continuous tooling improvement. These certifications can prove our long-term quality, stability, and production capabilities.
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 is a professional 3-flute drill bit manufacturer with standardized manufacturing procedures and continuous tooling improvement. These certifications can prove our long-term quality, stability, and production capabilities.
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 is a professional 3-flute drill bit manufacturer with standardized manufacturing procedures and continuous tooling improvement. These certifications can prove our long-term quality, stability, and production capabilities.
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 is a professional 3-flute drill bit manufacturer with standardized manufacturing procedures and continuous tooling improvement. These certifications can prove our long-term quality, stability, and production capabilities.
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 is a professional 3-flute drill bit manufacturer with standardized manufacturing procedures and continuous tooling improvement. These certifications can prove our long-term quality, stability, and production capabilities.
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 is a professional 3-flute drill bit manufacturer with standardized manufacturing procedures and continuous tooling improvement. These certifications can prove our long-term quality, stability, and production capabilities.
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 is a professional 3-flute drill bit manufacturer with standardized manufacturing procedures and continuous tooling improvement. These certifications can prove our long-term quality, stability, and production capabilities.
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 is a professional 3-flute drill bit manufacturer with standardized manufacturing procedures and continuous tooling improvement. These certifications can prove our long-term quality, stability, and production capabilities.
Get instant Quote

Technical Support & Tool Optimization

1.JINOO’s experienced engineering team will provide you with professional technical support based on continuous tooling optimization.

2.Regrinding and resharpening services are also offered to ensure the dimensional accuracy, and nearly 40% tooling costs can be saved with about 3 times regrinding.

3.After-sales technical support is available to solve your tooling problems.
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Testimonials

“I have traded with JINOO for over seven years, from the single-flute drills to the two-flute drills. Since they have self-innovated the 3-flute drills, I purchased a sample from JINOO for testing. Overall, the performance was brilliant, significantly reducing tool replacement times. Nice one for that!”
Lebrown Kennival
Engineer

FAQ about 3-Flute Drill Bits

What is the lead time of 3-flute drill bits for production?

Our production time for the D5300-Series 3-Flute Drill Bits is typically from 7 to 15 days due to the shipment of virgin carbide substrates. As for the lead time, we cooperate with DHL, FedEx, and UPS to achieve the quick delivery of 3-flute drills.

Do you provide customized services of 3-flute drill bits?

Of course! We can customize high-performance 3-flute drills for you according to your working conditions, working workpieces, and different industries. For example, our 3-Flute Drill Bits are enabled for 3xD and 5xD. We can fully meet your expectations if you are inquiring about other diameters, shanks, total length, and even the detailed geometry design. We also offer more than 32 different coating options to boost the durability and lifespan of 3-Flute Drill Bits.

What payment methods for 3-flute drills do you accept?

The payment methods of our D5200-Series 3-Flute Drill Bits can be flexible. We can accept bank transfer, credit card, and PayPal to pay for drills. However, if you have any other questions about the payment, we can also modify it for you.

What are three flute drills for?

Our 3-Flute Drill Bits are the upgraded version of traditional 2-flute drill bits, designed for machining short-chip materials like soft steel, cast iron, and aluminum. If you are in the automotive industry and have bulk machining demands, JINOO’s D5200-Series 3-Flute Drill Bits will significantly raise drilling efficiency.

What is a flute in drilling?

The flute in the drill bit is the helical groove that runs along the body of the drill, which is crucial during drilling. We usually use the two-flute drill bit, but JINOO has innovated the three-flute drill bit and four-flute high-feed drills. Flutes can also help remove the chips from the hole and allow coolants to flow during the drilling process. Our 3-Flute Drill Bits can operate under better feed rates and attain superior hole stability than standard ones.

What is the difference between a 2-flute drill and a 3-flute drill?

The 3-Flute Drill Bits have one more flute to gain higher feed rates, superior hole roundness, and finer surface finishes. However, they have smaller chip space, cannot handle long-chip materials, and are only suitable for short-chipping materials like steel parts, aluminum, cast iron, etc.

In contrast, 2-flute drills feature larger chip space, making them suitable for deep-hole drilling in long-chip materials like stainless steel and high-hardness materials. 2-flute drill bits are also much cheaper than 3-flute drill bits.

What materials are 3-Flute Drill Bits most suitable for machining?

JINOO’s 3-Flute Drill Bits are highly recommended for machining short-chipping materials like steel parts, cast iron, aluminum, and non-ferrous steels. Still, we warmly remind you that we do not recommend using them for long-chipping materials like low-carbon steels. In the future, JINOO will continue to upgrade 3-Flute Drill Bits for machining hard-to-machine materials.

Contact our sales team or sign in to find out about all your pricing options.

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ABOUT US

Changzhou JINOO Tools Group was established in 2006 with advanced capabilities in manufacturing solid carbide drill bits, end mills, reamers, cutters, saw blades, and non-standard cutters with more than 18 years of experience. Our 3-flute drill bits are widely used in the automotive, aerospace, and industrial manufacturing to achieve efficient drilling with high chip evacuation.