B253TX / B254TX
Recommended Milling Conditions
High feed machining
GR.5 Hardened Steel （ 38~48HRC ）
GR.6 Hardened Steel （ 48~56HRC ）
GR.7 Hardened Steel （ 56~68HRC ）
Work Material
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
Code No.
Dc
B253TX-R3 B253TX-R4 B253TX-R5 B253TX-R6
6 8
8000~3200 6000~2400 4800~1900 4000~1600
2700~1200 2600~1000 3400~1400 2400~1000
6400~2500 4800~1900 3800~1500 3200~1300
1900~830 1900~800 2400~1000 1700~1100
4800~1900 3800~1500 3000~1000 2200~800
1500~700 1500~600 1600~800 1350~600
10 12
ap:0.075~0.015
ap:0.075~0.015
ap:0.075~0.015
（ mm ）
ae:0.2~0.18
ae:0.2~0.18
ae:0.2~0.18
Finishing
GR.5 Hardened Steel （ 38~48HRC ）
GR.6 Hardened Steel （ 48~56HRC ）
GR.7 Hardened Steel （ 56~68HRC ）
Work Material
280
220
200
Vc m/min
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
Code No.
Dc
B254TX-R1.5 B254TX-R2 B254TX-R2.5 B254TX-R3 B254TX-R4 B254TX-R5 B254TX-R6 B254TX-R8 B254TX-R10
3 4 5 6 8
29,000 22,000 17,500 15,000 11,000 9,000 7,500
6,560 6,250 5,600 5,000 4,200 3,500 3,000 3,000 3,000
23,000 17,100 13,600 11,400
4,500 4,000 3,500 3,000 2,500 2,150 2,000 2,000 2,000
21,100 15,800 12,700 10,600
4,240 3,520 3,200 2,500 2,250 2,000 1,900 1,900 1,900
8,550 6,850 5,700 4,280 3,500
7,950 6,350 5,300 4,000 3,200
10 12 16 20
5,500 4,500
ap:0.02D
ap:0.02D
ap:0.02D
（ mm ）
ae:0.05D
ae:0.05D
ae:0.05D
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.
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