HARVI™ Ultra 8X • Helical Shell Mill • SNHJ12 • For Corner Radius from 4,8 to 6,4mm • Metric

Name: HARVI™ Ultra 8X • Helical Shell Mill • SNHJ12 • For Corner Radius from 4,8 to 6,4mm • Metric
SKU: 104202322
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Shoulder milling cutter for steel, stainless steel, and high-temperature alloys.

Features and benefits

Accomodates inserts with corner radii from 4,8-6,4mm (.188" - .250") in the lead row.

Designed for aerospace airframe structural component machining, targeting maximum metal removal rates (MRR).

Adjustable coolant nozzles support chip evacuation and control heat in the cutting zone.

Large helix ensures hassle-free chip evacuation event at highest metal removal rates (MRR).

Uses and application

Slotting: Shoulder Profiling
Slotting: Shoulder
侧铣/方肩铣削：方头立铣
侧铣/方肩铣削：简易倒角
铣削 — 贯通式冷却
铣削 — 侧铣和端面铣
刀座

刀片选择指南

HARVI™ Ultra 8X • Insert Selection Guide II - using inserts KSSM8+ (SNPJ12-GD)
Material Group	Light Machining		General Purpose		Heavy Machining
–	(Light geometry)		–		(Strong geometry)
–	wear resistance				toughness
–	Geometry	Grade	Geometry	Grade	Geometry	Grade
P1–P2	.S..GD	KCPK30	.S..GD	KCPK30	.S..GD	KCPM40
P3–P4	.S..GD	KCPK30	.S..GD	KCPK30	.S..GD	KCPM40
P5–P6	.S..GD	KCPK30	.S..GD	KCPK30	.S..GD	KCPM40
M1–M2	.S..GD	KCPK30	.S..GD	KCPK30	.S..GD	KCPM40
M3	.S..GD	KCPK30	.S..GD	KCPK30	.S..GD	KCPM40
K1–K2	.S..GD	KCK20B	.S..GD	KCK20B	.S..GD	KCK15
K3	.S..GD	KCK20B	.S..GD	KCK20B	.S..GD	KCK20B
N1–N2	–	–	–	–	–	–
N3	–	–	–	–	–	–
S1–S2	–	–	–	–	–	–
S3	–	–	–	–	–	–
S4	–	–	–	–	–	–
H1	–	–	–	–	–	–

HARVI™ Ultra 8X • Insert Selection Guide I
Material Group	Light Machining		General Purpose		Heavy Machining
–	(Light geometry)		–		(Strong geometry)
–	wear resistance				toughness
–	Geometry	Grade	Geometry	Grade	Geometry	Grade
P1–P2	.E..LEH	KCSM40	.E..LEH	KCSM40	.S..GDH	KCSM40
P3–P4	.E..LEH	KCSM40	.E..LEH	KCSM40	.S..GDH	KCSM40
P5–P6	.E..LEH	KCSM40	.E..LEH	KCSM40	.S..GDH	KCSM40
M1–M2	.E..LEH	KCSM40	.E..LEH	KCSM40	.S..GDH	KCSM40
M3	.E..LEH	KCSM40	.S..GDH	KCSM40	.S..GDH	KCSM40
K1–K2	–	–	–	–	–	–
K3	–	–	–	–	–	–
N1–N2	–	–	–	–	–	–
N3	–	–	–	–	–	–
S1–S2	.E..LEH	KCSM40	.E..LEH	KCSM40	.S..GDH	KCSM40
S3	.E..LEH	KCSM40	.S..GDH	KCSM40	.S..GDH	KCSM40
S4	.E..LEH	KCSM40	.S..GDH	KCSM40	.S..GDH	KCSM40
H1	–	–	–	–	–	–

Recommended Starting Feeds [IPT]

HARVI™ Ultra 8X • Recommended Starting Feeds [IPT]
Insert Geometry	Recommended Starting Feed per Tooth (Fz) in Relation to % of Radial Engagement (ae)
	10%			20%			30%			40–100%
	L	M	H	L	M	H	L	M	H	L	M	H
HARVI Ultra 8X - SNHJ....E..LEH	0.004	0.007	0.008	0.003	0.005	0.006	0.002	0.004	0.005	0.002	0.004	0.005
HARVI Ultra 8X - SNHJ....S..GDH	0.005	0.008	0.010	0.004	0.006	0.008	0.003	0.005	0.007	0.003	0.005	0.006
KSSM8+ - SNPJ…..S..GD	0.007	0.015	0.023	0.005	0.011	0.017	0.004	0.009	0.015	0.004	0.009	0.014
L = Light Machining; M = Medium Machining; H = Heavy Machining NOTE: Use Light Machining values as starting feed rate.

推荐初始进给率 [mm]

HARVI™ Ultra 8X • Recommended Starting Feeds [mm/th]
Insert Geometry	Recommended Starting Feed per Tooth (Fz) in Relation to % of Radial Engagement (ae)
	10%			20%			30%			40–100%
	L	M	H	L	M	H	L	M	H	L	M	H
HARVI Ultra 8X - SNHJ....E..LEH	0.09	0.17	0.23	0.07	0.13	0.18	0.06	0.11	0.15	0.06	0.10	0.14
HARVI Ultra 8X - SNHJ....S..GDH	0.13	0.20	0.31	0.10	0.15	0.23	0.09	0.13	0.20	0.08	0.12	0.18
KSSM8+ - SNPJ…..S..GD	0,17	0,37	0,59	0,13	0,27	0,44	0,11	0,24	0,38	0,10	0,22	0,35
L = Light Machining; M = Medium Machining; H = Heavy Machining NOTE: Use Light Machining values as starting feed rate.

HARVI™ Ultra 8X • Recommended Starting Speed [SFM]
Grade		KC725M			KCK15			KCPK30			KCK20B			KCPM40			KCSM40
Chip Thickness hex Inch		Min		Max	Min		Max	Min		Max	Min		Max	Min		Max	Min		Max
Material Group		Max	Start	Min	Max	Start	Min	Max	Start	Min	Max	Start	Min	Max	Start	Min	Max	Start	Min
P	1	855	755	705	–	–	–	1495	1295	1215	–	–	–	970	855	805	1150	1050	985
	2	720	625	525	–	–	–	920	835	755	–	–	–	820	705	590	985	885	720
	3	655	560	460	–	–	–	835	755	675	–	–	–	755	640	525	920	785	640
	4	590	490	395	–	–	–	740	605	525	–	–	–	675	560	445	785	675	540
	5	490	445	395	–	–	–	625	560	490	–	–	–	560	510	445	655	590	525
	6	425	330	260	–	–	–	525	445	360	–	–	–	490	375	295	590	460	330
M	1	560	490	445	–	–	–	675	605	510	–	–	–	640	560	510	855	690	605
	2	510	425	360	–	–	–	605	525	460	–	–	–	575	490	410	770	590	475
	3	375	330	260	–	–	–	475	425	375	–	–	–	425	375	295	575	475	360
K	1	–	–	–	1380	1265	1115	970	870	785	1180	950	805	–	–	–	–	–	–
	2	–	–	–	1100	970	900	770	690	625	920	755	640	–	–	–	–	–	–
	3	–	–	–	920	820	755	640	575	525	690	575	460	–	–	–	–	–	–
N	1	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
	2	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
	3	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
S	1	115	100	80	–	–	–	–	–	–	–	–	–	130	115	100	165	130	80
	2	115	100	80	–	–	–	–	–	–	–	–	–	130	115	100	180	130	80
	3	150	115	80	–	–	–	–	–	–	–	–	–	165	130	100	215	150	100
	4	165	150	100	–	–	–	165	150	115	–	–	–	180	165	115	245	195	130
H	1	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
As the average chip thickness increases, speed should be decreased. Material groups P, M, K and H show recommended starting speeds for dry machining. For wet machining, reduce speed by 20%. Material groups N and S show recommended starting speeds for wet machining. Not recommended for dry machining.

推荐初始切削速度[m/min]

HARVI™ Ultra 8X • Recommended Starting Speed [m/min]
Grade		KC725M			KCK15			KCPK30			KCK20B			KCPM40			KCSM40
Chip Thickness hex mm		Min		Max	Min		Max	Min		Max	Min		Max	Min		Max	Min		Max
Material Group		Max	Start	Min	Max	Start	Min	Max	Start	Min	Max	Start	Min	Max	Start	Min	Max	Start	Min
P	1	260	230	215	–	–	–	455	395	370	–	–	–	295	260	245	350	320	300
	2	220	190	160	–	–	–	280	255	230	–	–	–	250	215	180	300	270	220
	3	200	170	140	–	–	–	255	230	205	–	–	–	230	195	160	280	240	195
	4	180	150	120	–	–	–	225	185	160	–	–	–	205	170	135	240	205	165
	5	150	135	120	–	–	–	190	170	150	–	–	–	170	155	135	200	180	160
	6	130	100	80	–	–	–	160	135	110	–	–	–	150	115	90	180	140	100
M	1	170	150	135	–	–	–	205	185	155	–	–	–	195	170	155	260	210	185
	2	155	130	110	–	–	–	185	160	140	–	–	–	175	150	125	235	180	145
	3	115	100	80	–	–	–	145	130	115	–	–	–	130	115	90	175	145	110
K	1	–	–	–	420	385	340	295	265	240	360	290	245	–	–	–	–	–	–
	2	–	–	–	335	295	275	235	210	190	280	230	195	–	–	–	–	–	–
	3	–	–	–	280	250	230	195	175	160	210	175	140	–	–	–	–	–	–
N	1	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
	2	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
	3	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
S	1	35	30	25	–	–	–	–	–	–	–	–	–	40	35	30	50	40	25
	2	35	30	25	–	–	–	–	–	–	–	–	–	40	35	30	55	40	25
	3	45	35	25	–	–	–	–	–	–	–	–	–	50	40	30	65	45	30
	4	50	45	30	–	–	–	50	45	35	–	–	–	55	50	35	75	60	40
H	1	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
As the average chip thickness increases, speed should be decreased. Material groups P, M, K and H show recommended starting speeds for dry machining. For wet machining, reduce speed by 20%. Material groups N and S show recommended starting speeds for wet machining. Not recommended for dry machining.

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HARVI™ Ultra 8X • Helical Shell Mill • SNHJ12 • For Corner Radius from 4,8 to 6,4mm • Metric