T-slot cutters, type NR, code 314215N, diameter 21 mm

314215N.210 High-speed steel HSS Co5 DIN 851

D d 11	S d 11	d h 6	l₁	l₃	d₁	Z	a	Item code	On stock
21	9	12	74	29	10	6	12	314215N.210	Yes

**) On demand

Cutting conditions

Material	Strength	A_p	A_e	V_c	fz(mm/z) Ø 12,5	Ø 16	Ø 18	Ø 21	Ø 25	Ø 32	Ø 40
P.1 \| Free-cutting steel, general construction steels	≤ 600 N/mm²	1xS	Dxa	33	0.01	0.017	0.018	0.023	0.036	0.047	0.055
P.2 \| General construction steels, steel casting	≤ 850 N/mm²	1xS	Dxa	28	0.01	0.017	0.018	0.023	0.036	0.047	0.055
P.3 \| Tools steels low alloyed	≤ 1100 N/mm²	1xS	Dxa	22	0.01	0.017	0.018	0.023	0.036	0.047	0.055
N.2 \| Aluminium cast alloys Si (Si ≤ 12%)	≤ 600 N/mm²	1xS	Dxa	45	0.014	0.022	0.024	0.03	0.047	0.061	0.071
S.2 \| Titanium, titanium alloys	≤ 1250 N/mm²	1xS	Dxa	11	0.007	0.012	0.013	0.016	0.025	0.033	0.038

Calculations of cutting conditions

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Straight shank with clamping flat (Weldon) according to DIN 1835 B.

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Helix angle = 20°. Rake angle = 10°.

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For roughing operation and materials of lower and medium strength (up to 700 MPa), surface roughness Ra 12,5 and more.

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Very high performance high speed steel with good toughness for milling cutters and for milling of materials up to the strength of 1200 MPa.