GENERAL DESCRIPTION

ST 300 with Siemens Sinumerik One is a high productive lathe equipped with a CNC- controlled system for linear- and circular interpolation. The machine is designed to fulfill the demands for high productive chip removal, high repeatability, machining of close tolerances and easy to handle as well as easy to maintain.

ST 300 can be offered in one length with 2 different headstocks. ST300 can be equipped with one or 2 turrets, 2 or 4-axis. ST300 is as standard equipped with a 150 mm headstock or conventional quill, with stroke of 150 mm and a Sauter turret with 12 positions according to DIN 3425 diameter 50 mm.

ST 300 can be equipped with a large number of options as programmable tailstock with fixed quill, rotating tools, C-axis, Sub Spindle, Y-Axis, measuring probes for tool gauging and part measuring, gantry loader, part conveyor and so on.

Sub Spindle and Y-Axis make the machine possible to finalize complex parts without any engagement from operator.

It is a slant bed design with an inclination of 45°.

The headstock is built with a 2-steps gear box and has a Polyflex belt for transmission.
All sliding surfaces are lubricated from a central lubrication unit placed on the rear side of the lathe.

The movement of the X-axis ball screws is transmitted from feed motors of AC-type via ”timing belts” and in the Z-axis the feed motors are mounted direct on the ball screws.

The CNC-control uses a linear scale for X-positioning and the inbuilt encoders for Z-positioning.
A separate encoder gives the feedback from the main spindle and a scale for feedback for the tailstock.

The machine can be equipped with a chip conveyor. The conveyor can be installed for chip transportation either to the left or to the right side of the machine.
The machining area is completely covered by protecting guards which are catching the flying chips and water splash from the machining down to the chip conveyor. The front movable protection guard has two large windows for good visibility. The windows are made of safety glass.

ST 300 can be equipped with an automatic roof for a gantry loader (CPC) for part changing. The safety system is based on the Siemens function ”Sinumerik Safety Integrated” which allows some machine functions with open doors.

Suitable for these type of industry

• Automotive
• Oil industry
• Bearing industry
• Hydraulic components
• Heavy duty cutting
• Hard turning

TECHNICAL SPECIFICATION

Working range and slide movements ST300
Distance spindle nose - tail stock ref.plane 2-axis mm 1530
4-axis mm 1295
Max. swing diameter over bed mm 580
over rear slide mm 310
over front slide mm 310
Max. turning diameter rear slide mm 500
front slide mm 370
Carriage travel rear slide (1Z) mm 1400
front slide (2Z) mm 1090
Cross-slide travel rear slide (1X) mm 380
front slide (2X) mm 210
Max path velocity 1Z / 1X m/min 15/15
2Z / 2X m/min 15/7,5

Tailstock
Longitudinal travel 2-axis machine mm 970
4-axis machine mm 970
Tail shank diameter MK5
Tail pressure daN 1500

Space and weight
Length m 6,2
Depth m 3,8
Total height m 2,4
Approx. machine weight kg 8500

Headstock DIN 55026
Spindle nose Size A11
Spindle diameter in front bearing mm 150
Spindle bore mm 93

Spindle drive
AC output main motor 100%/60% kW 40/50
Max torque main motor 100%/60% Nm 4000/5000
Speed range of full power rpm 150-2000

C-axis (Option)
Power of separate drive motor kW 5,1
Max torque cont/max Nm 500/1500
Max feedrate rpm 25
Pos. accuracy degree ± 0,03
Rep. accuracy degree ± 0,01

Tool carrier rear slide Turret
Number of tool positions 12
Max driven tools (option) 6
Tool clamping DIN 69880 mm 50
Power of motor for driven tools kW 10,6
Max speed driven tools v/min 2500
Tool Changing time appr. s 0,56-2,3


Tool carrier front slide Turret
Number of tool positions 6
Tool clamping DIN 69880 mm 50