Carbide drill bits

DLC coated Carbide drills

Range reference: KVX-004

workpiece material: Soft steel; Hardened and tempered steel; Tempering stainless steel; Cast iron; Bearing steel; Deep hole working
application type: Hole Making
Coating: diamon-like-carbon coating

Material：MG-Grade,0.8um ultra-fine grain, 10% cobalt Coating: DLC Coating Ultra-low friction coefficient: ≤0.1 Inspection: Walter helickeck plus.100% visual inspection at 300X magnification

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Technical data

Product Name	DLC Coated Drill Bit
Material	Solid carbide
Process	Fully Gorund (Roll Forged & Polished, Roll Forged, Milled are Available)
Size	Standard size or as request
Point Type	118 Degree Regular Point (1-3mm); 138 Degree Split Point(3-20mm)
Shank Type	Straight Shank (Tree Flats Shank, 1/2" Shank Sliver & Deming, Reduced Shank,1/4" Quick Change Hex Shank are Available)
Surface Finish	Amber Color (Bright, Black Oxide, Titanium, Black & Gold, are Available)
Package	Plastic Box or as request

Additional technical data

Product Code	Blade diameter	Blade Length H			Full L			Shank D
Product Code	Blade diameter	3XD	5XD	8XD	3XD	5XD	8XD	3XD	5XD	8XD
EXWL00400	4	24	36	43	66	74	81	6	6	6
EXWL00450	4.5	24	36	43	66	74	81	6	6	6
EXWL00500	5	28	44	57	66	82	95	6	6	6
EXWL00550	5.5	28	44	57	66	82	95	6	6	6
EXWL00600	6	28	44	57	66	82	95	6	6	6
EXWL00650	6.5	34	53	76	79	91	114	8	8	8
EXWL00700	7	34	53	76	79	91	114	8	8	8
EXWL00750	7.5	41	53	76	79	91	116	8	8	8
EXWL00800	8	41	53	76	79	91	116	8	8	8
EXWL00850	8.5	47	61	95	89	103	142	10	10	10
EXWL00P00	9	47	61	95	89	103	142	10	10	10
EXWL00950	9.5	47	61	95	89	103	142	10	10	10
EXWL01000	10	47	61	95	89	103	142	10	10	10
EXWL01050	10.5	55	71	114	102	118	162	12	12	12
EXWL01100	11	55	71	114	102	118	162	12	12	12
EXWL01150	11.5	55	71	114	102	118	162	12	12	12
EXWL01200	12	55	71	114	102	118	162	12	12	12
EXWL01250	12.5	60	77	133	107	124	178	14	14	14
EXWL01300	13	60	77	133	107	124	178	14	14	14
EXWL01350	13.5	60	77	133	107	124	178	14	14	14
EXWL01400	14	60	77	133	107	124	178	14	14	14
EXWL01450	14.5	65	83	152	115	133	204	16	16	16
EXWL01500	15	65	83	152	115	133	204	16	16	16
EXWL01550	15.5	65	83	152	115	133	204	16	16	16
EXWL01800	16	65	83	152	115	133	204	16	16	16
EXWL01850	16.5	73	93	171	123	143	223	18	18	18
EXWL01700	17	73	93	171	123	143	223	18	18	18
EXWL01750	17.5	73	93	171	123	143	223	18	18	18
EXWL01800	18	73	93	171	123	143	223	18	18	18
EXWL01850	18.5	79	101		131	153		20	20	20
EXWL01900	19	79	101		131	153		20	20	20
EXWL01950	19.5	79	101		131	153		20	20	20
EXWL02000	20	79	101		131	153		20	20	20

Technical notes

The DLC coated solid carbide drill is designed for high-speed drilling of aluminum and non-ferrous materials, where low friction, minimal material adhesion, and superior surface finish are critical.
Ideal for high-speed CNC machining, dry or MQL conditions, and precision production environments.
Premium Carbide Substrate
• Manufactured from imported MG-grade carbide rods
• Ultra-fine grain size: 0.8 μm
• 10% cobalt content for excellent toughness and edge stability
• Optimized for high-speed and high-precision drilling
The substrate provides a strong foundation for ultra-sharp cutting edges and stable performance at high spindle speeds.
Advanced DLC Coating Technology
• Applied using in-house coating machines for full process control
• Ultra-low friction coefficient: ≤ 0.1
• Excellent anti-adhesion performance
• Effectively reduces:
• Built-up edge (BUE)
• Material sticking
• Heat generation during cutting
The DLC coating is especially suitable for aluminum and non-ferrous metals, enabling smooth chip flow and superior surface finish.
Optimized Geometry for High-Speed Drilling
• Sharp point geometry for easy material engagement
• Optimized helix angle for fast chip evacuation
• Ultra-sharp cutting edges reduce cutting resistance
• Geometry designed to maintain stability under high RPM
This geometry ensures efficient drilling with minimal vibration and consistent hole quality.
Polished Flute Design
• Highly polished flutes combined with DLC coating
• Further reduces friction during chip evacuation
• Prevents aluminum chips from sticking to the tool
• Improves hole surface finish and tool life
Application Materials
Suitable for machining:
• Aluminum alloys
• Die-cast aluminum
• Pure aluminum
• Magnesium alloys
• Other non-ferrous metals
Widely used in:
• Automotive lightweight components
• Aerospace aluminum parts
• Electronics and precision housings

Technical illustrations and dimension data