(G9B81) K-2 Carbide, 2Flute Ball Nose Rib Processing End Mill

Name: (G9B81) K-2 Carbide, 2Flute Ball Nose Rib Processing End Mill
Brand: Excision Pty Ltd
SKU: G9B81004
Price: 69.40 AUD
Availability: InStock

TiAlN-Coated 2 Flute Ball Nose End Mill for Rib Processing

$76.34 INC GST $69.40 EX GST Price available on request

SKU: G9B81004

Work materials

P M K N

Key features

TiAlN-coated solid carbide construction
Two-flute ball nose geometry for rib processing
30° helix suited to dry milling at high temperatures

Tool material Carbide

Surface treatment Aluminium Titanium Nitride Coating

Mill Diameter (mm)

Ball Nose Radius (mm)

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Contour milling focus

Ball nose geometry is designed for radius-bottom slots, fillets and special contours

Dry milling suitability

30° helix geometry suits dry milling applications at high temperatures

Compact size range

Mill diameters from 0.4 to 4 mm cover small rib-processing requirements

SKU	Mill Diameter (mm)	Ball Nose Radius (mm)	Overall length (mm)	Shank dia. (mm)	Length of cut (mm)	Length below shank (mm)	Neck dia. (mm)	CAD files	Stock	Price
G9B81004	0.4	R0.2	50.0	4.0	0.7	2.0	0.37	STEP DXF	1-2 Weeks	$69.40
G9B81005	0.5	R0.25	50.0	4.0	0.75	2.0	0.45	STEP DXF	In stock	$60.10
G9B81006	0.6	R0.3	50.0	4.0	0.9	2.0	0.55	STEP DXF	1-2 Weeks	$60.10
G9B81008	0.8	R0.4	50.0	4.0	1.2	4.0	0.75	STEP DXF	1-2 Weeks	$46.60
G9B81010	1.0	R0.5	50.0	4.0	1.5	6.0	0.95	STEP DXF	In stock	$42.80
G9B81012	1.2	R0.6	50.0	4.0	1.8	8.0	1.15	STEP DXF	1-2 Weeks	$42.80
G9B81014	1.4	R0.7	50.0	4.0	2.1	16.0	1.35	STEP DXF	1-2 Weeks	$48.30
G9B81015	1.5	R0.75	50.0	4.0	2.3	6.0	1.45	STEP DXF	Low stock	$42.80
G9B81016	1.6	R0.8	50.0	4.0	2.4	8.0	1.55	STEP DXF	1-2 Weeks	$42.80
G9B81020	2.0	R1.0	50.0	4.0	3.0	8.0	1.95	STEP DXF	In stock	$40.10
G9B81030	3.0	R1.5	50.0	6.0	4.5	10.0	2.85	STEP DXF	Low stock	$48.30
G9B81040	4.0	R2.0	50.0	6.0	6.0	12.0	3.85	STEP DXF	1-2 Weeks	$46.70

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Overview
Work Material
Speeds & Feeds
Reviews

Application

Product Description

YG-1 G9B81 K-2 is a TiAlN-coated solid carbide two-flute ball nose end mill for rib processing. It mills radius-bottom slots, fillets and special contours in detailed rib-processing applications. Its 30° helix geometry suits dry milling applications at high temperatures. Plain-shank variants cover 0.4–4 mm mill diameters with R0.2–R2.0 ball-nose radii. All listed variants have a 50 mm overall length for compact profiling operations. The ball-nose radius tolerance is ±0.02 mm for accurately defined profiles. The series is classified for ISO P, M and K material groups. Its compact diameter range supports machining narrow rib-processing features and detailed contours. Diameter and radius options suit small, detailed contour milling requirements.

TiAlN-coated solid carbide construction
Two-flute ball nose geometry for rib processing
30° helix suited to dry milling at high temperatures
Designed for radius-bottom slots fillets and special contours
0.4–4 mm mill diameter range with R0.2–R2.0 radii
±0.02 mm ball-nose radius tolerance

Product Data

Cutting Shape	Ball Nose
Length	Short
No. Flutes	2
Surface Treatment	Aluminium Titanium Nitride Coating, Titanium Aluminium Nitride Coating
Tool Material	Carbide

Work materials

VDI 3323 recommendations for this tool.

ExcellentGood

Steel

11 grades

Non-alloy steel

ExcellentVDI 1–5

Low-alloy steel

ExcellentVDI 6–9

High-alloy and tool steel

ExcellentVDI 10–11

Cast iron

6 grades

Grey cast iron

GoodVDI 15–16

Nodular cast iron

GoodVDI 17–18

Malleable cast iron

GoodVDI 19–20

Stainless steel

3 grades

Stainless steel

GoodVDI 12–14

Non-ferrous materials

8 grades

Wrought aluminium

GoodVDI 21–22

Cast aluminium

GoodVDI 23–25

Copper, bronze and brass

GoodVDI 26–28

VDI grade reference28 grades

Individual grade ratings and nominal hardness references. Base grades and decimal subgrades are listed separately.

Recommended VDI grades and nominal hardness references
VDI	Work material	Recommendation	HB ref.	HRC ref.
1	PNon-alloy steel	Excellent	125	-
2	PNon-alloy steel	Excellent	190	13
3	PNon-alloy steel	Excellent	250	25
4	PNon-alloy steel	Excellent	270	28
5	PNon-alloy steel	Excellent	300	32
6	PLow-alloy steel	Excellent	180	10
7	PLow-alloy steel	Excellent	275	29
8	PLow-alloy steel	Excellent	300	32
9	PLow-alloy steel	Excellent	350	38
10	PHigh-alloy and tool steel	Excellent	200	15
11	PHigh-alloy and tool steel	Excellent	325	35
12	MStainless steel	Good	200	15
13	MStainless steel	Good	240	23
14	MStainless steel	Good	180	10
15	KGrey cast iron	Good	180	10
16	KGrey cast iron	Good	260	26
17	KNodular cast iron	Good	160	3
18	KNodular cast iron	Good	250	25
19	KMalleable cast iron	Good	130	-
20	KMalleable cast iron	Good	230	21
21	NWrought aluminium	Good	60	-
22	NWrought aluminium	Good	100	-
23	NCast aluminium	Good	75	-
24	NCast aluminium	Good	90	-
25	NCast aluminium	Good	130	-
26	NCopper, bronze and brass	Good	110	-
27	NCopper, bronze and brass	Good	90	-
28	NCopper, bronze and brass	Good	100	-

HB and HRC values are nominal catalogue references. Grade subdivisions can vary between catalogues.

Recommendations apply to the listed VDI grades. Unlisted grades have no stated recommendation.

Cutting Speeds and Feeds

Select the operation, workpiece material and tool diameter to calculate the recommended cutting parameters for this product.

Choose the machining conditions below, then calculate the recommended spindle speed and feed rate.

Mill Diameter (Ø)	Vc	fz	RPM	FEED	Ap
0.4	33~43	0.003~0.006	26350~34000	150~415	0.018~0.036
0.5	41~53	0.003~0.006	26350~34000	150~415	0.023~0.045
0.6	50~64	0.004~0.008	26350~34000	190~535	0.027~0.054
0.8	66~85	0.004~0.008	26350~34000	190~535	0.036~0.072
1.0	77~97	0.004~0.010	24650~31000	210~595	0.045~0.090
1.2	77~98	0.005~0.013	20500~26000	210~665	0.055~0.100
1.4	79~97	0.006~0.015	18000~22000	210~665	0.062~0.125
1.5	75~97	0.007~0.016	16000~20500	210~665	0.070~0.135
1.6	78~101	0.007~0.017	15500~20000	210~665	0.075~0.145
1.8	82~103	0.007~0.018	14500~18200	210~665	0.080~0.160
2.0	82~101	0.008~0.021	13000~16000	210~665	0.090~0.180
3.0	85~104	0.012~0.030	9000~11000	210~665	0.135~0.270
4.0	90~117	0.015~0.036	7200~9350	210~665	0.180~0.360

Mill Diameter (Ø)	Vc	fz	RPM	FEED	Ap
0.4	24~30	0.002~0.005	19100~24200	75~230	0.018~0.036
0.5	30~38	0.002~0.005	19100~24200	75~230	0.023~0.045
0.6	36~46	0.002~0.006	19100~24200	95~300	0.027~0.054
0.8	48~61	0.002~0.006	19100~24200	95~300	0.036~0.072
1.0	55~69	0.003~0.007	17400~22100	105~330	0.045~0.090
1.2	55~69	0.004~0.009	14500~18300	105~330	0.055~0.100
1.4	56~67	0.004~0.011	12800~15300	105~330	0.062~0.125
1.5	54~70	0.005~0.011	11500~14900	105~330	0.070~0.135
1.6	56~70	0.005~0.012	11200~14000	105~330	0.075~0.145
1.8	58~72	0.005~0.013	10200~12800	105~330	0.080~0.160
2.0	59~72	0.006~0.014	9400~11500	105~330	0.090~0.180
3.0	57~108	0.009~0.014	6000~11500	105~330	0.135~0.270
4.0	63~83	0.011~0.025	5000~6600	105~330	0.180~0.360

Mill Diameter (Ø)	Vc	fz	RPM	FEED	Ap
0.4	33~43	0.003~0.006	26350~34000	150~415	0.018~0.036
0.5	41~53	0.003~0.006	26350~34000	150~415	0.023~0.045
0.6	50~64	0.004~0.008	26350~34000	190~535	0.027~0.054
0.8	66~85	0.004~0.008	26350~34000	190~535	0.036~0.072
1.0	77~97	0.004~0.010	24650~31000	210~595	0.045~0.090
1.2	77~98	0.005~0.013	20500~26000	210~665	0.055~0.100
1.4	79~97	0.006~0.015	18000~22000	210~665	0.062~0.125
1.5	75~97	0.007~0.016	16000~20500	210~665	0.070~0.135
1.6	78~101	0.007~0.017	15500~20000	210~665	0.075~0.145
1.8	82~103	0.007~0.018	14500~18200	210~665	0.080~0.160
2.0	82~101	0.008~0.021	13000~16000	210~665	0.090~0.180
3.0	85~104	0.012~0.030	9000~11000	210~665	0.135~0.270
4.0	90~117	0.015~0.036	7200~9350	210~665	0.180~0.360

Mill Diameter (Ø)	Vc	fz	RPM	FEED	Ap
0.4	24~30	0.002~0.005	19100~24200	75~230	0.018~0.036
0.5	30~38	0.002~0.005	19100~24200	75~230	0.023~0.045
0.6	36~46	0.002~0.006	19100~24200	95~300	0.027~0.054
0.8	48~61	0.002~0.006	19100~24200	95~300	0.036~0.072
1.0	55~69	0.003~0.007	17400~22100	105~330	0.045~0.090
1.2	55~69	0.004~0.009	14500~18300	105~330	0.055~0.100
1.4	56~67	0.004~0.011	12800~15300	105~330	0.062~0.125
1.5	54~70	0.005~0.011	11500~14900	105~330	0.070~0.135
1.6	56~70	0.005~0.012	11200~14000	105~330	0.075~0.145
1.8	58~72	0.005~0.013	10200~12800	105~330	0.080~0.160
2.0	59~72	0.006~0.014	9400~11500	105~330	0.090~0.180
3.0	57~108	0.009~0.014	6000~11500	105~330	0.135~0.270
4.0	63~83	0.011~0.025	5000~6600	105~330	0.180~0.360

Mill Diameter (Ø)	Vc	fz	RPM	FEED	Ap
0.4	33~43	0.003~0.006	26350~34000	150~415	0.018~0.036
0.5	41~53	0.003~0.006	26350~34000	150~415	0.023~0.045
0.6	50~64	0.004~0.008	26350~34000	190~535	0.027~0.054
0.8	66~85	0.004~0.008	26350~34000	190~535	0.036~0.072
1.0	77~97	0.004~0.010	24650~31000	210~595	0.045~0.090
1.2	77~98	0.005~0.013	20500~26000	210~665	0.055~0.100
1.4	79~97	0.006~0.015	18000~22000	210~665	0.062~0.125
1.5	75~97	0.007~0.016	16000~20500	210~665	0.070~0.135
1.6	78~101	0.007~0.017	15500~20000	210~665	0.075~0.145
1.8	82~103	0.007~0.018	14500~18200	210~665	0.080~0.160
2.0	82~101	0.008~0.021	13000~16000	210~665	0.090~0.180
3.0	85~104	0.012~0.030	9000~11000	210~665	0.135~0.270
4.0	90~117	0.015~0.036	7200~9350	210~665	0.180~0.360

Mill Diameter (Ø)	Vc	fz	RPM	FEED	Ap
0.4	24~30	0.002~0.005	19100~24200	75~230	0.018~0.036
0.5	30~38	0.002~0.005	19100~24200	75~230	0.023~0.045
0.6	36~46	0.002~0.006	19100~24200	95~300	0.027~0.054
0.8	48~61	0.002~0.006	19100~24200	95~300	0.036~0.072
1.0	55~69	0.003~0.007	17400~22100	105~330	0.045~0.090
1.2	55~69	0.004~0.009	14500~18300	105~330	0.055~0.100
1.4	56~67	0.004~0.011	12800~15300	105~330	0.062~0.125
1.5	54~70	0.005~0.011	11500~14900	105~330	0.070~0.135
1.6	56~70	0.005~0.012	11200~14000	105~330	0.075~0.145
1.8	58~72	0.005~0.013	10200~12800	105~330	0.080~0.160
2.0	59~72	0.006~0.014	9400~11500	105~330	0.090~0.180
3.0	57~108	0.009~0.014	6000~11500	105~330	0.135~0.270
4.0	63~83	0.011~0.025	5000~6600	105~330	0.180~0.360

Recommended parameters

Recommended cutting speeds and feeds
Parameter	Value	Unit
Spindle speed	–	rev/min
Feed rate	–	mm/min
Cutting speed (Vc)	–	m/min
Feed per tooth (fz)	–	mm/tooth

Choose your options and calculate the recommended parameters.

Resources

Understanding the Basics of Endmills

Endmills are indispensable tools in machining, renowned for their versatility and precision. Whether you’re a seasoned operator or new to machining, understanding...

January 21, 2025

Connor Urquhart

Article

Service & Delivery

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Key features

Contour milling focus

Dry milling suitability

Compact size range

Steel

Cast iron

Stainless steel

Non-ferrous materials

Cutting Speeds and Feeds

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Resources

Understanding the Basics of Endmills

Service & Delivery

How do I purchase my items?

What delivery services do we offer?

How do I return an item?

Have a question about this product?