B259TX / B269TX
Recommended Milling Conditions
High feed cutting
GR.5 Hardened Steel （ 38~48HRC ）
GR.6 Hardened Steel （ 48~56HRC ）
GR.7 Hardened Steel （ 56~68HRC ）
GR.9 Cast Iron
Work Material
200
180
160
200
Vc m/min
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
Code No.
Dc
B259TX/B269TX 6 B259TX/B269TX 8 B259TX/B269TX 10 B259TX/B269TX 12 B259TX/B269TX 16 B259TX/B269TX 20
10,617
2,548 2,389 3,058 3,185 2,867 2,293
9,555 7,166 5,733 4,778 3,583 2,867
2,293 2,150 2,752 2,867 2,580 2,064
8,493 6,370 5,096 4,247 3,185 2,548
2,038 2,293 2,446 2,548 2,293 1,835
10,617
2,548 2,389 3,058 3,185 2,867 2,293
7,963 6,370 5,308 3,981 3,185
7,963 6,370 5,308 3,981 3,185
ap:0.2×R
ap:0.2×R
ap:0.1×R
ap:0.2×R
（ mm ）
ae:0.5D
ae:0.5D
ae:0.5D
ae:0.5D
Ae
Side Milling
GR.5 Hardened Steel （ 38~48HRC ）
GR.6 Hardened Steel （ 48~56HRC ）
GR.7 Hardened Steel （ 56~68HRC ）
GR.9 Cast Iron
Work Material
150
100
90
145
Vc m/min
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
Code No.
Dc
B259TX/B269TX-6 B259TX/B269TX-8
6 8
6,600 4,900 4,000 3,300 2,500 2,000
2,300 2,350 2,400 2,400 2,100 1,900
5,300 4,000 3,200 2,600 2,000 1,600
1,800 1,850 1,900 1,900 1,700 1,400
4,000 3,000 2,400 2,000 1,500 1,200
1,000 1,000 1,000 1,000
7,400 5,500 4,500 3,700 2,800 2,300
2,600 2,600 2,600 2,600 2,400 2,100
B259TX/B269TX-10 10 B259TX/B269TX-12 12 B259TX/B269TX-16 16 B259TX/B269TX-20 20
900 830
ap:1.5D
ap:1.5D
ap:1.5D
ap:1.6D
（ mm ）
ae:0.1D
ae:0.05D
ae:0.03D
ae:0.1D
※ Notice: B269TX is Long Length series End Mills. Please adjust the parameter according 1. Please work with good rigidity / high precision facilities and collet chuck. 2. Please choose proper cutting fluid. 3. The cutting data is reference value only. Please adjust it according to your real working conditions. 4. If RPM is lower the reference value, the Feed rate (fz) and RPM should be reduced by the same proportion. 5. If vibration occurs during cutting, please reduce cutting parameter.
144
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