YAMA SEIKI

Machine Specifications

GS-4000 series
SPINDLE GS-4000 / L / L² / L³ GS-4300 / L / L² / L³
Hole through draw tube Ø 118 mm ( 4.65" ) Ø 165.5 mm ( 6.52" )
Hole through spindle Ø 130 mm ( 5.12" ) Ø 190 mm ( 7.48" )
Spindle bearing diameter
( Front / Rear )
Ø 180 / 160 mm ( 7.09" / 6.30" ) Ø 240 / 220 mm ( 9.45" / 8.66" )
Hydraulic cylinder 15" ( 18" ) 20" ( 24" )
Spindle nose A2-11 A2-15
Spindle motor type α30 / 6,000i
Motor output ( cont. / 30min. ) 30 / 37 kW ( 40 / 50 HP )
Motor full output speed 1,150 RPM
Spindle drive system 2-Speed Gear box
Spindle drive ratio 1 : 3 / 1 : 6 1 : 5 / 1 : 10
Spindle speed ranges L : 10 ~ 1,000 rpm
H : 20 ~ 2,000 rpm
L : 6 ~ 600 rpm
H : 12 ~ 1,200 rpm
Spindle full output speed L : 196 rpm
H : 388 rpm
L : 121 rpm
H : 239 rpm
Spindle torque ( cont. / 30min. ) L : 1,463 / 1,805 Nm
H : 739 / 911 Nm
L : 2,370 / 2,923 Nm
H : 1,197 / 1,476 Nm

Specifications are subject to change without notice.
1* Individual models may vary, detail specification please contact with YAMA SEIKI.
2* Option.