{"@context":"https://schema.org/","@type":"Product","name":"ProForm BN4 - 4 Flute Ball Nose End Mill for Hardened Steel (58 HRC)","image":["https://jaypee-images.s3.ap-south-1.amazonaws.com/products/jpcnc-proform-bn4-end-mill.png","https://jaypee-images.s3.ap-south-1.amazonaws.com/products/jpcnc-proform-bn4-dimension-drawing.png"],"description":"

JP CNC ProForm BN4 – 4 Flute Ball Nose End Mill for Hardened Steel - 58 HRC

Product Description:

Four-flute ball nose with AlTiSiN coating. This is the family for hardened die steel above 50 HRC, where the object is to leave the polisher less to do.

Hardened P20, H13, D2 to 58 HRC
Four flutes, R0.5 to R10 mm
AlTiSiN coating
Finish milling, less polishing downstream

Key Data:

Radius range	R0.5 - R10 mm
Work hardness	58 HRC
Helix angle	35°
Coating	AlTiSiN
Shank	Plain h6, metric
Work materials	Hardened H13 · D2 · SKD11 · pre-hardened P20 to 58 HRC
Operations	Hard milling · 3D finish profiling · fillet and blend finishing
Industries	Tool, die and mould · press tool · precision engineering

Specifications (C01 - C18, 18 codes, all dimensions in mm):

Order Code	Designation	R	D	Lc	L	d	Z	HRC	Coating
C01	R0.5x1x2x50L-D4-4F	0.5	1	2	50	4	4	58	AlTiSiN
C02	R1.0x2x4x50L-D4-4F	1	2	4	50	4	4	58	AlTiSiN
C03	R1.5x3x6x50L-D4-4F	1.5	3	6	50	4	4	58	AlTiSiN
C04	R2.0x4x8x50L-D4-4F	2	4	8	50	4	4	58	AlTiSiN
C05	R2.5x5x10x50L-D6-4F	2.5	5	10	50	6	4	58	AlTiSiN
C06	R3.0x6x12x50L-D6-4F	3	6	12	50	6	4	58	AlTiSiN
C07	R4.0x8x16x60L-D8-4F	4	8	16	60	8	4	58	AlTiSiN
C08	R5.0x10x20x75L-D10-4F	5	10	20	75	10	4	58	AlTiSiN
C09	R6.0x12x24x75L-D12-4F	6	12	24	75	12	4	58	AlTiSiN
C10	R7.0x14x28x80L-D14-4F	7	14	28	80	14	4	58	AlTiSiN
C11	R3.0x6x12x100L-D6-4F	3	6	12	100	6	4	58	AlTiSiN
C12	R4.0x8x16x100L-D8-4F	4	8	16	100	8	4	58	AlTiSiN
C13	R5.0x10x20x100L-D10-4F	5	10	20	100	10	4	58	AlTiSiN
C14	R6.0x12x24x100L-D12-4F	6	12	24	100	12	4	58	AlTiSiN
C15	R7.0x14x28x100L-D14-4F	7	14	28	100	14	4	58	AlTiSiN
C16	R8.0x16x32x100L-D16-4F	8	16	32	100	16	4	58	AlTiSiN
C17	R9.0x18x36x100L-D18-4F	9	18	36	100	18	4	58	AlTiSiN
C18	R10.0x20x40x100L-D20-4F	10	20	40	100	20	4	58	AlTiSiN

Designation key: cutting diameter x length of cut x overall length - shank diameter - number of flutes. Ball nose codes carry the radius first. All shanks are plain h6 metric and run in standard ER11 to ER40 collets on BT30/40/50, CAT40/50, HSK-A63/A100 spindles. AluForce AL1 is also offered on a Ø3.175 mm shank for router spindles. Non-standard lengths of cut, necked reach and alternative coatings are ground to order - ask us with the feature you need to reach.

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