B255X
Recommended Milling Conditions
Slotting
GR.2 Low-alloyed Steel （ ~24HRC ）
GR.3 Hi-alloyed Steel （ ~30HRC ）
GR.4 Hardened Steel （ 30~38HRC ）
GR.5 Hardened Steel （ 38~48HRC ）
GR.6 Hardened Steel （ 48~56HRC ）
GR.1 Carbon Steel
GR.9 Cast Iron
Work Material
Ø1.0~3.0 62~70 Ø3.1~20 75~80
Ø1.0~3.0 62~70 Ø3.1~20 75~80
Ø1.0~3.0 62~70 Ø3.1~20 75~80
Ø1.0~3.0 40~50 Ø3.1~20 53~55
Ø1.0~3.0 34~40 Ø3.1~20 44~50
Ø1.0~3.0 22~25 Ø3.1~20 28~30
Ø1.0~3.0 62~70 Ø3.1~20 75~80
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)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
Code No.
Dc
B255X-1
1 19,500 120 19,500 120 14,500 120 12,500
85 85 85 85
11,000 8,000 6,300 5,000 4,350 3,500 3,000 2,500 1,900 1,500 1,200
65 65 70 70 75 90
7,000 5,000 3,900 3,500 2,700 2,200 1,900 1,600 1,100
30 40 40 40 40 50 55 55 50 50 45 35 30
19,500 120 14,000 120 11,000 130
B255X-1.5
1.5 14,000 120 14,000 120 10,500 120
8,500 7,000 6,000 5,300 4,200 3,500 2,900 2,200 1,700 1,450 1,100
B255X-2
2 11,000 130 11,000 130
8,350 7,000 6,350 4,900 4,300 3,600 2,700 2,100 1,800 1,350 1,050
120 130 150 180 230 230 230 220 210 190 150
B255X-2.5 B255X-3 B255X-4 B255X-5 B255X-6 B255X-8 B255X-10 B255X-12 B255X-16 B255X-20
2.5 9,900 3 7,500 4 6,000 5 5,200 6 4,500 8 3,300 10 2,600 12 2,200 16 1,600 20 1,300
115 190 225 300 300 280 270 270 250 200
9,900 7,500 6,000 5,200 4,500 3,300 2,600 2,200 1,600 1,300
115 190 225 300 300 280 270 270 250 200
9,900 7,500 6,000 5,200 4,500 3,300 2,600 2,200 1,600 1,300
115 190 225 300 300 280 270 270 250 200
100 120 125 120 120 120 125 100
100 100 100
90 95 85 65
950 800 600 480
950 750
880
75
ap:≤3 0.3D >3 0.5D
ap:≤3 0.3D >3 0.5D
ap:≤3 0.3D >3 0.5D
ap:≤3 0.3D >3 0.5D
ap:≤3 0.3D >3 0.5D
ap:≤3 0.3D >3 0.5D
ap ： 0.05D
（ mm ）
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.
130
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