Home » LATHELAND® Hard-Milling Ball Nose End Mill, 2 Flutes
LATHELAND® hard-milling ball nose end mill, 2 flutes, AlTiSiN coated
LATHELAND® hard-milling ball nose end mill – dimension drawing (D, R, l1, L, d2)
LATHELAND® hard-milling ball nose end mill, 2 flutes, AlTiSiN coated – side view
LATHELAND® hard-milling ball nose end mill, 2 flutes, AlTiSiN coated – vertical view
LATHELAND® hard-milling ball nose end mill, 2 flutes, AlTiSiN coated
LATHELAND® hard-milling ball nose end mill – dimension drawing (D, R, l1, L, d2)
LATHELAND® hard-milling ball nose end mill, 2 flutes, AlTiSiN coated – side view
LATHELAND® hard-milling ball nose end mill, 2 flutes, AlTiSiN coated – vertical view
LATHELAND

LATHELAND® Hard-Milling Ball Nose End Mill, 2 Flutes

In stock
SKU: LL-BN2-1x50-S4
£33.84 GBP

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2-flute ball nose end mill for 3D finishing of hardened steels.

Specifications

Material Solid carbide
Coating AlTiSiN multilayer (hardness 3,800 HV, oxidation resistance above 1,100 °C)
Flutes 2
Helix angle 30°
Shank tolerance h6
Workpiece hardness 50–70 HRC
Sizes available 25

Features

  • For hardened steels 50–70 HRC
  • 30° helix
  • Recessed neck on longer sizes

Size table (all dimensions in mm)

SKU Ø D Ball R l1 cutting L overall d1 neck d2 shank
LL-BN2-1x50-S4 1 0.5 1 50 0.95 4
LL-BN2-1x50-S6 1 0.5 1 50 0.95 6
LL-BN2-1.5x50-S4 1.5 0.75 1.5 50 1.45 4
LL-BN2-1.5x50-S6 1.5 0.75 1.5 50 1.45 6
LL-BN2-2x50-S4 2 1 2 50 1.94 4
LL-BN2-2x50-S6 2 1 2 50 1.94 6
LL-BN2-2.5x50-S4 2.5 1.25 2.5 50 2.4 4
LL-BN2-2.5x50-S6 2.5 1.25 2.5 50 2.4 6
LL-BN2-3x50-S4 3 1.5 3 50 2.85 4
LL-BN2-3x50-S6 3 1.5 3 50 2.85 6
LL-BN2-4x50 4 2 4 50 3.8 4
LL-BN2-4x60 4 2 4 60 3.8 6
LL-BN2-5x60 5 2.5 5 60 4.8 6
LL-BN2-6x60 6 3 6 60 5.8 6
LL-BN2-6x75 6 3 6 75 5.8 6
LL-BN2-6x100 6 3 6 100 2.8 6
LL-BN2-8x75 8 4 8 75 7.8 8
LL-BN2-8x100 8 4 8 100 1.8 8
LL-BN2-10x75 10 5 10 75 9.8 10
LL-BN2-10x100 10 5 10 100 9.8 10
LL-BN2-10x125 10 5 10 125 9.8 10
LL-BN2-10x150 10 5 10 150 9.8 10
LL-BN2-12x75 12 6 12 75 11.7 12
LL-BN2-12x100 12 6 12 100 11.7 12
LL-BN2-12x150 12 6 12 150 11.7 12

Recommended cutting data

Starting values for stable conditions with good coolant supply. Adjust for your machine, set-up and workholding. For diameters between the listed values, interpolate between the neighbouring rows.
Spindle speed n = Vc × 1000 / (π × D)  ·  Feed rate vf = n × fz × z (drills: vf = n × fn).

Roughing
Workpiece material Hardened steel
50 ≤ HRC ≤ 55 		Hardened steel
55 < HRC ≤ 65 		Hardened steel
65 < HRC ≤ 70
Ap – depth of cut 0.08 × D 0.05 × D 0.05 × D
Ae – width of cut 0.24 × D 0.15 × D 0.15 × D
Vc (m/min) 240 180 120
Ø D (mm) fz (mm/tooth)
1 0.014 0.012 0.012
1.5 0.019 0.018 0.017
2 0.025 0.023 0.023
2.5 0.032 0.029 0.030
3 0.039 0.036 0.037
4 0.054 0.049 0.052
5 0.068 0.061 0.064
6 0.084 0.075 0.074
8 0.116 0.099 0.100
10 0.136 0.124 0.124
12 0.146 0.132 0.134
Finishing
Workpiece material Hardened steel
50 ≤ HRC ≤ 55 		Hardened steel
55 < HRC ≤ 65 		Hardened steel
65 < HRC ≤ 70
Ap – depth of cut 0.05–0.10 mm 0.05–0.10 mm 0.05–0.10 mm
Ae – width of cut 0.02 × D 0.02 × D 0.02 × D
Vc (m/min) 250 200 150
Ø D (mm) fz (mm/tooth)
1 0.038 0.024 0.024
2 0.038 0.043 0.043
3 0.052 0.056 0.057
4 0.076 0.072 0.072
5 0.089 0.086 0.085
6 0.097 0.099 0.095
8 0.111 0.104 0.104
10 0.119 0.114 0.114
12 0.123 0.119 0.119

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