MTM Machine Tools Factory, LTD


Purpose	Main spindle
Numerical lathe US - 400 STEP is designet for manufacturing of single and serias production of parts with diametars up to 415 mm. Contemporary structure of the lathe and simple handling enables economic machining. Increase of productivity is achived SIEMENS - SINUMERIC 802 C numeric control.	Hight rigidity of the main spindle, which is in highly precise bearings - TIMKEN, ensures high quality machining.
Slide ways	Screw spindle
Slide ways are hardened and grinded.	Very precise hardened and grinded ball crew spindle for X and Y axis.

US - 400 STEP STANDARD SPECIFICATIONS
Turning diametar over bed	415 mm
Turning diametar over saddle	205 mm
Travel of transversal steady rest	1.000 mm
Travel of longitudinal steady rest	220 mm
Travel of rotating (upper) steady rest	130 mm
Range of rotation of the steady rest	from – 45° to + 45°
Height of centers	200 mm
Distance between centers	1000 mm
Main drive capacity	5.5 kW
Number of gears	2
Range of revolutions	from 30 to 3.000 rpm
Spindle bore of main spindle	45 mm
Inner cone of main spindle	ME 50
Main spindle face according to DIN 55027	5
Transversal and longitudinal working feed	1 - 5000 m/ min
Rapid feed (transversal / longitudinal)	5/5 m/min
Clamping force of the steady rest X / Z - axis	4000/ 6000 N
Taillstock quill diametar	50 mm
Taillstock travel	120mm
Inner cone of the tailstock	MK4