YAMA SEIKI

Maximum Strength Design

By using the Finite Element Method ( FEM ), optimal reinforce ribbings are directly cast into the one-piece bed structure. Together with the super-wide Y-shape column, mechanical rigidity has been increased by more than 45% when compared to conventional designs. The BM series is capable of performing super heavy-duty machining and maintain long-term super high-precision accuracy. More rigidity also means extended tool life.
Built to endure years and years of rigorous high production machining, the thermally balanced bed and casting components are of FC300 - MEEHANITE casting ( industry standard is FC200 ~ 250 ). FC300 grade cast iron is capable of withstanding much greater stress without deforming and provides maximum vibration dampening, which result in a machine that will outlast and outperform the competition.
All spindle and servo motors, including drives, are FANUC αi series components to ensure peak machining performance and accuracy. X, Y, and Z axes are driven by over-sized FANUC αi series AC servo motors, providing tremendous thrust outputs with faster acceleration and deceleration. ( The motors may change according to different controller selections. )
CASTING STRUCTURE DIMENSIONS
Models A B C D E F G
BM 850 1,000 / 39.3" 900 / 35.4" 800 / 31.4" 1,200 / 47.2" 450 / 17.7" 450 / 17.7" 600 / 23.6"
BM 1020 850 / 33.4"
BM 1200 1,280 / 50.3" 1,200 / 47.2" 1,000 / 39.3"
BM 1460 1,100 / 43.3"
BM 1400 1,360 / 53.5" 1,300 / 51.1" 1,150 / 45.2" 550 / 21.6" 550 / 21.6"" 750 / 29.5"
BM 1600 1,650 / 64.9" 1,500 / 59.1" 1,300 / 51.1" 1,350 / 53.1" 600 / 23.6" 800 / 31.4"
BM 1800 1,600 / 62.9" 800 / 31.4"
BM 2100 2,430 / 95.6" 2,400 / 94.4
( Linear guide way. )
1,700 / 66.9" 1,500 / 59.1" 700 / 27.5"
BM 2500 2,100 / 82.6"
* Unit : mm / inch