Super Rigidity Vertical Machining Centers
YAMA SEIKI in house made gear box spindle provides the best torque combination. Box way on 3 axes to fulfill reliable and stable heavy-duty cutting requirement. Precise hand scraping on key contact surfaces to ensure the best support and consistent machine accuracy.
With the advanced R&D technology and strict quality control, BM series is specially made for heavy cutting machining needs, which have rigid and stable machine structure for extensive application. BM series offers excellent performance with reasonable and affordable price.
- Depends on the different machining requirement, we provides various modular spindle combinations to achieve optimal cutting performance.
- 3 axes are equipped with box ways which is precisely grinded and thoroughly heat treated, especially suitable for heavy cutting.
- Highly efficient 24T arm type magazine design provides fast and reliable tool change system.
- The wide range BM series, X travel start from 850 mm to 2,500 mm ; Y / Z travel start from 600 mm to 1,000 mm to meet your various machining requirements.
Maximum Strength Design
- The Finite Element Analysis ( FEA ) provides optimal machine design and light-weight structure advantage while ensuring super rigidity of machine.
- △ ( Delta ) Wide span column construction provides superior cutting stability. The head-stock retains stable even under high speed movement.
- Based on BESSEL POINTS concept, provides the stable support on Y-axis saddle to keep in minimum deformation, thus to enhance the table dynamic accuracy.
- Copper piping auto lubrication system delivers metered amounts of lubrication to the slide ways, ball screws, and vital components with ensured reliability.
- Working table with double ribbed design to enhance the structure strength, while securing the table will not deform even load heavily for a long time.
High Performance Spindle System
- Gear spindle combines with High-Low 2 steps gear box design to provide large torque output.
- High hardness Nickel-molybdenum-chromium alloy gear mechanism with auto lubrication and cooling system ensures the performance and lifetime of gear transmission box.
- High speed spindle and affordable belt type spindle options, which can be adapted with different kinds of spindle motor to fulfill variety of requirement.
- Spindle, spindle motor, and gear box all pass through the completely running test ensures the performance and lifetime.
|Standard||CAT 40||CAT 50||CAT 50|
|Optional||CAT 50||CAT 40||—|
High Speed ATC System
- BM series 24T arm type ATC system provide high speed tool exchange solution, and we also offer 30T / 40T arm type tool magazine to fulfill the variety of machining requirement.
- Standard shortcut tool change function can shorten tool change time and increase working efficiency.
- Ultra fast tool exchange system ( opt. )
- 24T Disc type tool magazine
High Effeciency Chip Disposal System
- All series are equipped with 1 / 3 / 5 screw type chip auger according to the machine size, thus to provide high chip clearing efficiency.
- The optional high pressure chips flush coolant system is also available.
|Screw chip auger x1||Screw chip auger x3||Screw chip auger x5||Chain type chip conveyor|
|BM-850 / BM-1020 /|
BM-1200 / BM-1460
|BM-1400 / BM-1600 / BM-1800||BM-2100 / BM-2500||Optional|
High Efficiency Automatic Pallets Changer System
In order to lower the labor cost and meet the requirement of high speed mass production, BM850-APC adapted with four box way, combines with APC system, which provides the best produce solution for automobile industry, especially suitable for gearbox, inlet manifold, or others parts.
- 3 axes auto lubrication system
- 3 axes ball screw pretension
- Spindle air curtain
- Coolant nozzle around spindle
- Air blow system
- Front side chip auger
- Two sides chip auger ( BM-1400 ~ 2500 )
- Fully enclosed splash guard
- Rigid tapping
- Lubricating oil recovering system
- Heat exchanger for electrical cabinet
- RS-232 interface
- Tool box
- Air gun
- Water gun
- Alarm light
- Foundation bolt kit
- Automatic power-off system
- Control system : MITSUBISHI / SIEMENS
- Fully enclosed splash guard
- Tool magazine : 40 / 50 / 80 / 100 / 120 ~ 240 T
- X / Y / Z / B axes optical linear scale
- Spindle thermal compensation
- Coolant through spindle ( Form A )
- Auto. tool length measurement
- Auto. work-piece measurement
- Rear exit auger type chip conveyor
- Oil mist cooling system
- Disc type oil skimmer
|X-axis travel||mm (inch)||850 ( 33.5 )||1,020 ( 40.2 )||1,200 ( 47.2 )||1,400 ( 55.1 )|
|Y-axis travel||mm (inch)||600 ( 23.6 )|
|Z-axis travel||mm (inch)||600 ( 23.6 )|
|Distance from spindle center|
|mm (inch)||680 ( 26.8 )|
|Distance from spindle nose|
to table center
|mm (inch)||125 ~ 725 ( 4.92 ~ 28.5 )|
|Table size ( X direction )||mm (inch)||1,050 ( 41.3 )||1,120 ( 44.1 )||1,300 ( 51.2 )||1,500 ( 59.1 )|
|Table size ( Y direction )||mm (inch)||600 ( 23.6 )||600 ( 23.6 )||600 ( 23.6 )||650 ( 25.6 )|
|Table load capacity||kg (lb)||850 ( 1,870 )||1,000 ( 2,210 )||1,200 ( 2,650 )||1,400 ( 3,085 )|
|Spindle taper||40-Taper : CAT 40*1|
50-Taper : CAT 50*1
|Spindle configuration||40-Taper : 2-speed Gear Box / Belt Drive ( Opt. )|
50-Taper : 2-speed Gear Box
|Spindle motor ( cont. / 30 min. )||kW (HP)||40-Taper : 7.5 / 11 ( 10 / 15 )*2|
50-Taper : 11 / 15 ( 15 / 20 )*2
|Spindle speed||rpm||40-Taper : L : 65~1,500 / H : 1,500~8,000 / Belt Drive 10~10,000 ( Opt. )|
50-Taper : L : 65~1,500 / H : 1,500~6,000
|X / Y axes rapid feed rate||m/min. (IPM)||24 ( 945 )|
|Z-axis rapids feed rate||m/min. (IPM)||20 ( 788 )|
|Cutting feed rate||m/min. (IPM)||1-10 ( 39.4 ~ 393.7 )|
|Tool magazine capacity||T||40-Taper : 20T drum ATC*2|
50-Taper : 24 / 30T swing arm ATC
|Max. tool diameter /|
adj. pocket empty
|mm (inch)||40-Taper : 90 / 150 ( 3.5″ / 5.9″ )|
50-Taper : 110 / 200 ( 4.3″ / 7.8″ )*3
|Max. tool length||mm (inch)||40-Taper : 250 ( 9.84″ )|
50-Taper : 300 ( 11.8″ )
|Max. tool weight||kg (lb)||40-Taper : 8 ( 18 )|
50-Taper : 15 ( 33 )
|Positioning accuracy ( JIS B 6338 )||mm (inch)||± 0.01 / Full Travel ( ± 0.00039 / Full Travel )|
|Positioning accuracy ( VDI 3441 )||mm (inch)||P = 0.012 ( P = 0.00047 )|
|Repeatability ( JIS B 6338 )||mm (inch)||± 0.003 ( ± 0.000118 )|
|Repeatability ( VDI 3441 )||mm (inch)||Ps = 0.008 ( Ps = 0.00031 )|
|Control system||FANUC Oi -MF / 31i -MB MITSUBISHI M70 / M730|
|Pneumatic pressure requirement||kg/cm2 (PSI)||6 ( 85 )|
|Power requirement||V||220 ± 10%|
|Coolant tank capacity||liter (gal)||310 ( 82 )||350 ( 93 )||365 ( 97 )||415 ( 110 )|
|Machine weight||kg (lbs)||6,500 ( 14,330 )||6,800 ( 14,991 )||7,300 ( 16,093 )||7,500 ( 16,534 )|
Specifications are subject to change without notice.
*1 : Optional BT, DIN.
*2 : Different spindle motor maybe optional available, please consult with your sales representative.
*3 : 24-tool swing arm ATC.