Off-Center Features on a Box Way Platform

The BML-600Y is a box way CNC turning center with Y-axis, built for parts in the 8-inch chuck class that carry off-center features: flats, cross-holes, keyways, and eccentric drilling that would otherwise mean a second setup on a milling machine. C-axis and live tooling come standard, so milling happens in the same chucking as the turning.

The box way construction is hand-scraped along its full length, giving the vibration damping and long-term geometric stability that heavy or interrupted cuts demand. The 60-degree bed inclination keeps chip flow and rigidity where Y-axis work needs them.

Key Specifications

  • Swing: Φ600 mm over bed, Φ450 mm over saddle
  • Chuck: 8-inch standard, 10-inch optional
  • Maximum machining length: up to 520 mm with the 8-inch chuck (exact figure depends on turret type)
  • Y-axis travel: ±50 mm, with C-axis and live tooling standard
  • Spindle: 50 to 4,500 rpm (8-inch), Φ62 mm bore, Φ86 mm optional

Full specifications are in the table on the right.

BML-600Y or Its Siblings?

Machining length is the ladder within the Y-axis family: the BML-600Y covers parts up to about 520 mm, the BML-600MY extends to about 760 mm, and the BML-600LY reaches about 1,260 mm. If your parts run longer than the 600Y envelope, step up the bed rather than compromise the setup.

Prefer a linear way platform for lighter, faster production cycles? The ML-600Y is the same Y-axis capability on linear guideways (see our guide: Box Way vs Linear Way). Need back-end machining in the same cycle? The BML-600TY adds a sub-spindle.

Q: What is the maximum machining length of the BML-600Y?

A: Up to 520 mm with the standard 8-inch chuck, depending on turret type (480 mm with BMT65, 520 mm with VDI40). The optional 10-inch chuck reduces this slightly.

Q: What is the difference between the BML-600Y and the BML-600LY?

A: Bed length and part capacity. The BML-600Y handles parts up to about 520 mm with an 8-inch chuck; the BML-600LY extends machining length to about 1,260 mm with a 10-inch chuck. The Y-axis capability is identical.

Q: Should I choose the BML-600Y or the ML-600Y?

A: Both carry the same Y-axis package. The BML-600Y's hand-scraped box way suits heavier and interrupted cutting; the ML-600Y's linear way suits cycle-time-driven production.

ITEM UNIT BML-600Y
Capacity
Swing over bed mm Φ600
Swing over saddle mm Φ450
Maximum machining diameter mm BMT65: 380; VDI40: 285
Maximum machining length mm BMT65: STD: 480 (8″); OPT: 470 (10″)
VDI40: STD: 520 (8″); OPT: 510 (10″)
Slant angle of bed ° 60°
Travel Range
X-axis mm BMT65: 206 (190+16);
VDI40: 206 (142.5+63.5)
Y-axis mm ±50
Z-axis mm BMT65: 525; VDI40: 565
C-axis mm 360° (0.001°)
W-axis mm –
Spindle
Spindle speeds rpm STD: 50~4,500 (8″);
OPT: 50~3,500 (10″)
Spindle nose STD: A2-6; OPT: A2-8, Built-in spindle A2-6
Spindle bore diameter mm STD: Φ62 (A2-6); OPT: Φ86 (A2-8)
Front bearing inner diameter mm STD: Φ100 (A2-6); OPT: Φ120 (A2-8)
Draw bar diameter mm STD: Φ52; OPT: Φ75
Chuck
Chuck diameter inch STD: 8″; OPT: 10″
Turret
Type Live-tooling
Stations pcs STD: 12
Model LS-200DTR
Square tool shank mm 25 x 25
Boring bar shank diameter mm Φ40
Indexing time (0~180°) sec 1.4
Live Tool
Spindle Speeds rpm 50~4,000
Feed Rate
Rapid Traverse m/min X: 16, Z: 20, Y: 8, C: 200 rpm
Tailstock
Type Automatic
Quill diameter mm Φ85
Quill bore taper MT5
Quill travel mm 120
Tailstock travel mm 450
Motors
Main-spindle kw STD: α30ip (15/18.5); OPT: α22ip (11/15)
Sub-spindle kw –
Live-tool kw α3/10000 (3.7/5.5)
Axis servo motor kw X/Y/Z – α12 (3.0)
Hydraulic oil pump kw 1.5
Chip conveyor kw 0.2
Coolant pump kw 0.8
Accuracy
Positioning mm X/Z: ±0.004, Y: ±0.003
Repeatability mm X/Z: ±0.003, Y: ±0.003
Power
Requirements KVA 380-415 / 220V 30 KVA
Machine size
Height cm 228
Floor space (LxW) cm 441 x 233
Packing (w/ conveyor) cm 402 x 229 x 255
Net weight (w/conveyor) kg 6,100
Gross weight (w/conveyor) kg 6,370

 

Specifications

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