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Optimum L44 CNC

The machine is currently on display and has been used for demonstration purposes only. Optiturn L44 CNC Premium CNC lathe, directly from the manufacturer.

L44 CNC – The OPTIMUM Premium CNC lathe with Siemens SINUMERIK 828D control stands out for its power, speed, precision, and long service life.

Dimensions and Weights
Maximum width/depth: 2,300 mm
Length approx.: 2,530 mm
Width/depth approx.: 1,595 mm
Height approx.: 1,795 mm
Weight approx.: 2,600 kg

Working Area
Chuck diameter: 150 mm
Chuck actuation: hydraulic
Centre height: 223 mm
Distance between centres: 850 mm
Swing over bed: 446 mm
Swing over bed bridge: 520 mm
Swing over cross slide: 240 mm
Bed width: 300 mm

Axis Drive Torque
X-axis: 6 Nm
Z-axis: 8.5 Nm

Speed Range
Number of speed ranges: 1
Speed range: 10 – 3,000 rpm

Electrical Data
Main drive motor power: 7 kW
Supply voltage: 400 V
Power frequency: 50 Hz

Electrical Connection
Total connected load: 23 kVA

Accuracy
Repeatability: ± 0.005 mm
Positioning accuracy: ± 0.005 mm

Hydraulic System
Motor power: 0.75 kW
Tank capacity: 50 litres

Coolant System
Coolant pump power: 270 W
Tank capacity: 90 litres

Machine Data
Chuck bore diameter: 40 mm

Motors
Main drive motor torque: 33 Nm

Tailstock
Taper: MT 4
Quill stroke: 165 mm
Quill diameter: 52 mm

Spindle
Spindle nose: DIN ISO 702-1 No. 5
Spindle bore/bar capacity: 52 mm

Control
Type: Sinumerik 828D PPU 240
System software: SW 24
CNC memory: 3 MB
Look Ahead: 50
Block change time: 3 ms
Number of tools: 128

Travel
X-axis: 250 mm
Z-axis: 760 mm

Vertical Spindle
Continuous duty motor power S1: 7 kW
Motor power S6-30% duty cycle: 16 kW
Main motor torque: 33 Nm
Main motor (S6-30% duty cycle): 80 Nm

Feed Rate
X-axis: 15,000 mm/min
Z-axis: 15,000 mm/min

Feed Force
Feed force X-axis: 7.5 kN
Feed force Z-axis: 5.3 kN

Tool Changer
Type: hydraulic; VDI 30
Number of tool stations: 8
Max. insert height/width (square tools): 20 x 20 mm
Max. boring bar diameter: 25 mm

SIEMENS SAFETY INTEGRATED

Equipment
Main Spindle
• Massive construction

Machine Bed
• Heavily ribbed
• High rigidity and durability

Guideways
• Robust flat-bed guideways

Ball Screws
• For rapid traversing speeds on all axes
• Reduced wear
• High positional and repeatability accuracy

Cast Construction
• Hardened to HRC48-52 and heat-treated

Machine Feet
• Six pieces
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• Optimal machine alignment

Heat Exchanger
• Enclosed control cabinet with intelligent cooling management
• Optimum temperature even at high ambient temperatures

Tool Changer System
• Eight tool positions
• Hydraulic VDI30 tool changer
• Max. insert height 20 mm

Hydraulic Power Unit
• Motor power 750 W
• Tank capacity 50 litres
• Clamping pressure / operating pressure 2,500–2,942 kPa

3-Jaw Chuck
• Hydraulic 3-jaw chuck Ø 150 mm
• Hydraulic release and clamping via foot switch
• Easy clamping of workpieces
• Hard and soft block jaws

Centralized Lubrication System
• Automatic intermittent lubrication
• Reduces wear on bearings, guideways, and ball screws
• Equipped with float switch. An audible signal sounds if the oil level is too low

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