HR-MAX Long Neck Micro Carbide End Mills

Name: HR-MAX Long Neck Micro Carbide End Mills
Brand: KOVES

Long-neck solid carbide micro end mills for deep grooves: ball nose R0.1–R2.0, radius and flat types from D0.2 mm, with extended neck lengths.

Inquire about this product Contact details

Opens your email application; sending happens there.

Product information

The HR-MAX long neck micro end mills series (catalog L60–L66) covers NHRB230 2-flute long-neck ball nose (R0.1–R2.0), NHRR230/NHRR430 long-neck radius 2/4-flute and NHRE230/NHRE430 long-neck flat 2/4-flute, with neck relief for deep cavity walls.

Specifications

Cutter types	NHRB230 2-flute long-neck ball nose; NHRR230 / NHRR430 long-neck radius 2/4-flute; NHRE230 / NHRE430 long-neck flat 2/4-flute
Diameter range	R0.1–R2.0 mm ball nose; D0.5–D4.0 mm radius; D0.2–D4.0 mm flat (per catalog tables)
Example stock models	NHRB230-015200-050-S04; NHRE430-010050-050-S04; NHRR230-008040R0.05-050-S04

Available sizes

Model codes and dimensions reproduced from the Koves 2025 Solid Round Cutting Tools catalog. Stock items are listed in the catalog, not confirmed live — ask us for current availability.

HR-MAX Long Neck Ball End Mill, 2-Flute, 30° helix

Catalog page 34 · 21 sizes · code NHRB230

Model	Dia. (mm)	Neck length (mm)	Dia. (mm) (2)	Corner radius (mm)	Flute length (mm)	Shank dia. (mm)	Overall length (mm)
NHRB230-012060-050-S04	1.2	6	1.15	R.06	0.96	4	50
NHRB230-012080-050-S04	1.2	8	1.15	R.06	0.96	4	50
NHRB230-012100-050-S04	1.2	10	1.15	R.06	0.96	4	50
NHRB230-012120-050-S04	1.2	12	1.15	R.06	0.96	4	50
NHRB230-015060-050-S04	1.5	6	1.15	R.06	0.96	4	50
NHRB230-015080-050-S04	1.5	8	1.45	R0.75	1.2	4	50
NHRB230-015100-050-S04	1.5	10	1.45	R0.75	1.2	4	50
NHRB230-015120-050-S04	1.5	12	1.45	R0.75	1.2	4	50
NHRB230-015160-050-S04	1.5	16	1.45	R0.75	1.2	4	50
NHRB230-015200-050-S04	1.5	20	1.45	R0.75	1.2	4	50
NHRB230-020080-050-S04	2.0	8	1.45	R0.75	1.2	4	50
NHRB230-020100-050-S04	2.0	10	1.45	R0.75	1.2	4	50
NHRB230-020120-050-S04	2.0	12	1.95	R1.0	1.6	4	50
NHRB230-020160-050-S04	2.0	16	2.85	R1.5	2.4	6	50
NHRB230-020180-050-S04	2.0	18	2.85	R1.5	2.4	6	50
NHRB230-030100-050-S06	3.0	10	2.85	R1.5	2.4	6	50
NHRB230-030120-050-S06	3.0	12	2.85	R1.5	2.4	6	50
NHRB230-030160-050-S06	3.0	16	2.85	R1.5	2.4	6	50
NHRB230-030200-070-S06	3.0	20	2.85	R1.5	2.4	6	70
NHRB230-040160-050-S06	4.0	16	3.85	R2.0	3.2	6	50
NHRB230-040200-050-S06	4.0	20	3.85	R2.0	3.2	6	50

HR-MAX Long Neck Radius End Mill, 4-Flute, 30° helix

Catalog page 34 · 35 sizes · code NHRR430

Model	Dia. (mm)	Neck length (mm)	Corner radius (mm)	Flute length (mm)	Shank dia. (mm)	Overall length (mm)
NHRR430-010040R0.1-050-S04	1.0	4	R0.1	1.5	4	50
NHRR430-010060R0.1-050-S04	1.0	6	R0.1	1.5	4	50
NHRR430-010080R0.1-050-S04	1.0	8	R0.1	1.5	4	50
NHRR430-010040R0.2-050-S04	1.0	4	R0.1	1.5	4	50
NHRR430-010060R0.2-050-S04	1.0	6	R0.2	1.5	4	50
NHRR430-010080R0.2-050-S04	1.0	8	R0.1	1.5	4	50
NHRR430-015060R0.2-050-S04	1.5	6	R0.1	1.5	4	50
NHRR430-015080R0.2-050-S04	1.5	8	R0.2	2.3	4	50
NHRR430-015100R0.2-050-S04	1.5	10	R0.1	1.5	4	50
NHRR430-020080R0.1-050-S04	2.0	8	R0.1	3.0	4	50
NHRR430-020100R0.1-050-S04	2.0	10	R0.1	3.0	4	50
NHRR430-020120R0.1-050-S04	2.0	12	R0.1	3.0	4	50
NHRR430-020160R0.1-050-S04	2.0	16	R0.1	3.0	4	50
NHRR430-020080R0.2-050-S04	2.0	8	R0.2	3.0	4	50
NHRR430-020100R0.2-050-S04	2.0	10	R0.2	3.0	4	50
NHRR430-020120R0.2-050-S04	2.0	12	R0.2	3.0	4	50
NHRR430-020160R0.2-050-S04	2.0	16	R0.2	3.0	4	50
NHRR430-030120R0.2-050-S04	3.0	12	R0.2	3.0	4	50
NHRR430-030160R0.2-050-S06	3.0	16	R0.2	3.0	4	50
NHRR430-030200R0.2-050-S06	3.0	20	R0.2	3.0	4	50
NHRR430-030260R0.2-070-S06	3.0	26	R0.3	3.0	4	70
NHRR430-030300R0.2-070-S06	3.0	30	R0.3	3.0	4	70
NHRR430-030260R0.3-070-S06	3.0	26	R0.3	4.5	6	70
NHRR430-030300R0.3-070-S06	3.0	30	R0.3	3.0	4	70
NHRR430-030120R0.5-050-S06	3.0	12	R0.3	3.0	4	50
NHRR430-030160R0.5-050-S06	3.0	16	R0.3	3.0	4	50
NHRR430-030200R0.5-050-S06	3.0	20	R0.5	3.0	4	50
NHRR430-030260R0.5-070-S06	3.0	26	R0.2	3.0	4	70
NHRR430-030300R0.5-070-S06	3.0	30	R0.2	3.0	4	70
NHRR430-040160R0.2-050-S06	4.0	16	R0.2	3.0	4	50
NHRR430-040200R0.2-050-S06	4.0	20	R0.2	3.0	4	50
NHRR430-040160R0.3-050-S06	4.0	16	R0.3	6	6	50
NHRR430-040200R0.3-050-S06	4.0	20	R0.3	3.0	4	50
NHRR430-040160R0.5-050-S06	4.0	16	R0.5	3.0	4	50
NHRR430-040200R0.5-050-S06	4.0	20	R0.5	3.0	4	50

HR-MAX Long Neck Radius End Mill, 2-Flute, 30° helix

Catalog page 35 · 8 sizes · code NHRR230

Model	Dia. (mm)	Neck length (mm)	Corner radius (mm)	Flute length (mm)	Shank dia. (mm)	Overall length (mm)
NHRR230-005020R0.05-050-S04	0.5	2	R0.05	1.2	4	50
NHRR230-005040R0.05-050-S04	0.5	4	R0.05	0.7	4	50
NHRR230-005060R0.05-050-S04	0.5	6	R0.05	1.2	4	50
NHRR230-006020R0.05-050-S04	0.6	2	R0.05	1.2	4	50
NHRR230-006040R0.05-050-S04	0.6	4	R0.05	0.9	4	50
NHRR230-006060R0.05-050-S04	0.6	6	R0.05	1.2	4	50
NHRR230-008040R0.05-050-S04	0.8	4	R0.05	1.2	4	50
NHRR230-008060R0.05-050-S04	0.8	6	R0.05	1.2	4	50

HR-MAX Long Neck Flat End Mill, 4-Flute, 30° helix

Catalog page 35 · 25 sizes · code NHRE430

Model	Dia. (mm)	Neck length (mm)	Flute length (mm)	Dia. (mm) (2)	Shank dia. (mm)	Overall length (mm)
NHRE430-010050-050-S04	1.0	5	1.5	0.95	4	50
NHRE430-010060-050-S04	1.0	6	1.5	0.95	4	50
NHRE430-010080-050-S04	1.0	8	1.5	0.95	4	50
NHRE430-010100-050-S04	1.0	10	1.5	0.95	4	50
NHRE430-010120-050-S04	1.0	12	1.5	0.95	4	50
NHRE430-010160-050-S04	1.0	16	1.5	0.95	4	50
NHRE430-015060-050-S04	1.5	6	1.5	0.95	4	50
NHRE430-015080-050-S04	1.5	8	1.5	0.95	4	50
NHRE430-015100-050-S04	1.5	10	1.5	0.95	4	50
NHRE430-015120-050-S04	1.5	12	2.3	1.45	4	50
NHRE430-015160-050-S04	1.5	16	1.5	0.95	4	50
NHRE430-015180-050-S04	1.5	18	1.5	0.95	4	50
NHRE430-015200-050-S04	1.5	20	1.5	0.95	4	50
NHRE430-020080-050-S04	2.0	8	1.5	0.95	4	50
NHRE430-020100-050-S04	2.0	10	6	3.85	6	50
NHRE430-020120-050-S04	2.0	12	6	3.85	6	50
NHRE430-020160-050-S04	2.0	16	3.0	1.95	4	50
NHRE430-020180-050-S04	2.0	18	6	3.85	6	50
NHRE430-020200-050-S04	2.0	20	6	3.85	6	50
NHRE430-020220-050-S04	2.0	22	6	3.85	6	50
NHRE430-030120-050-S04	3.0	12	6	3.85	6	50
NHRE430-030160-050-S04	3.0	16	4.5	2.85	6	50
NHRE430-030200-050-S04	3.0	20	6	3.85	6	50
NHRE430-040160-050-S06	4.0	16	6	3.85	6	50
NHRE430-040200-050-S06	4.0	20	6	3.85	6	50

HR-MAX Long Neck Flat End Mill, 2-Flute, 30° helix

Catalog page 36 · 27 sizes · code NHRE230

Model	Dia. (mm)	Neck length (mm)	Flute length (mm)	Dia. (mm) (2)	Shank dia. (mm)	Overall length (mm)
NHRE230-002010-050-S04	0.2	1	1.0	0.65	4	50
NHRE230-002015-050-S04	0.2	1.5	0.3	0.18	4	50
NHRE230-002020-050-S04	0.2	2	1.0	0.65	4	50
NHRE230-003010-050-S04	0.3	1	1.0	0.65	4	50
NHRE230-003020-050-S04	0.3	2	0.5	0.27	4	50
NHRE230-003030-050-S04	0.3	3	1.0	0.65	4	50
NHRE230-004020-050-S04	0.4	2	1.0	0.65	4	50
NHRE230-004040-050-S04	0.4	4	0.6	0.37	4	50
NHRE230-004060-050-S04	0.4	6	1.0	0.65	4	50
NHRE230-005020-050-S04	0.5	2	1.0	0.65	4	50
NHRE230-005030-050-S04	0.5	3	1.0	0.65	4	50
NHRE230-005040-050-S04	0.5	4	0.7	0.45	4	50
NHRE230-005060-050-S04	0.5	6	1.0	0.65	4	50
NHRE230-005080-050-S04	0.5	8	1.0	0.65	4	50
NHRE230-006020-050-S04	0.6	2	1.0	0.65	4	50
NHRE230-006030-050-S04	0.6	3	1.0	0.65	4	50
NHRE230-006040-050-S04	0.6	4	0.9	0.55	4	50
NHRE230-006060-050-S04	0.6	6	1.0	0.65	4	50
NHRE230-006080-050-S04	0.6	8	1.0	0.65	4	50
NHRE230-007040-050-S04	0.7	4	1.0	0.65	4	50
NHRE230-007060-050-S04	0.7	6	1.0	0.65	4	50
NHRE230-007080-050-S04	0.7	8	1.0	0.65	4	50
NHRE230-007100-050-S04	0.7	10	1.0	0.65	4	50
NHRE230-008040-050-S04	0.8	4	1.2	0.95	4	50
NHRE230-008060-050-S04	0.8	6	1.2	0.95	4	50
NHRE230-008080-050-S04	0.8	8	1.2	0.95	4	50
NHRE230-008100-050-S04	0.8	10	1.2	0.95	4	50

Catalog page 36 · 23 sizes · code NHRE230

Model	Dia. (mm)	Neck length (mm)	Flute length (mm)	Dia. (mm) (2)	Shank dia. (mm)	Overall length (mm)
NHRE230-010050-050-S04	1.0	5	1.5	0.95	4	50
NHRE230-010060-050-S04	1.0	6	1.5	0.95	4	50
NHRE230-010080-050-S04	1.0	8	1.5	0.95	4	50
NHRE230-010100-050-S04	1.0	10	1.5	0.95	4	50
NHRE230-010120-050-S04	1.0	12	1.5	0.95	4	50
NHRE230-010160-050-S04	1.0	16	1.5	0.95	4	50
NHRE230-015060-050-S04	1.5	6	1.5	0.95	4	50
NHRE230-015080-050-S04	1.5	8	1.5	0.95	4	50
NHRE230-015100-050-S04	1.5	10	1.5	0.95	4	50
NHRE230-015120-050-S04	1.5	12	2.3	1.45	4	50
NHRE230-015160-050-S04	1.5	16	1.5	0.95	4	50
NHRE230-015180-050-S04	1.5	18	1.5	0.95	4	50
NHRE230-015200-050-S04	1.5	20	1.5	0.95	4	50
NHRE230-020080-050-S04	2.0	8	1.5	0.95	4	50
NHRE230-020100-050-S04	2.0	10	1.5	0.95	4	50
NHRE230-020120-050-S04	2.0	12	1.5	0.95	4	50
NHRE230-020160-050-S04	2.0	16	3.0	1.95	4	50
NHRE230-020180-050-S04	2.0	18	1.5	0.95	4	50
NHRE230-020200-050-S04	2.0	20	1.5	0.95	4	50
NHRE230-020220-050-S04	2.0	22	1.5	0.95	4	50
NHRE230-030120-050-S06	3.0	12	1.5	0.95	4	50
NHRE230-030160-050-S06	3.0	16	4.5	2.85	6	50
NHRE230-030200-050-S06	3.0	20	1.5	0.95	4	50

How to read the model number

The catalog page “Detailed explanation of the model” reads a code left to right as series, cutter type, length mark, flutes, helix angle, cutting diameter, corner radius, cutting length, overall length and shank diameter. The original diagram is reproduced here:

Koves model-number key: how a carbide end mill code is read — series (HP/HM/HY/HS/HR/ALU/DIA/CO-MAX), cutter type (B/E/R/RE), length mark (L), flutes, helix angle, cutting diameter, corner radius, cutting length, overall length and shank diameter — Original “Detailed explanation of the model”, catalog folio L01 (2025).

Source: source-excerpts/catalog-2025-pages-3-4-milling-contents-model-code.txt — Original PDF page 4