Overview

This document provides detailed technical specifications for a series of CNC lathe machines, specifically models in the LU Series, including LU45II and LU35II variants. The data covers machine dimensions, capacities, spindle and turret configurations, feed rates, motor power, and other critical parameters.

Machine Size and Dimensions

• Swing Over Bed: 780 mm (30.71 in.) for most models.
• Distance Between Centers: Ranges from 750 mm (29.53 in.) to 3,000 mm (118.11 in.) depending on model.
• Max Turning Diameter: Up to 650 mm (25.59 in.) for larger models; smaller models have max diameters around 555 mm (21.85 in.).
• Max Work Length: Varies from 750 mm (29.53 in.) to 3,000 mm (118.11 in.).
• Machine Height: Approximately 2,822 mm to 3,040 mm depending on model.
• Floor Space: Ranges from 4,535 × 2,872 mm to 8,020 × 3,355 mm including tank.
• Weight: Between 9,000 kg (19,800 lb) and 23,500 kg (51,700 lb) with CNC system.

Spindle and Turret Specifications

• Spindle Nose and Bore: Spindle bore diameters typically 110 mm to 130 mm (4.33 to 5.12 in.).
• Front Bearing Diameter: Ranges from 90 mm to 150 mm (3.54 to 5.91 in.).
• Turret Types: Upper Turret (UT) and Lower Turret (LT) configurations, with tool shank diameters up to 32 mm (1.26 in.).
• Number of Tools: UT typically 12 tools, LT 10 tools.
• Indexing Time: Approximately 0.3 to 0.7 seconds per index.

Axis Travel and Feed Rates

• X-Axis Travel: Approximately 920 mm to 3,090 mm depending on turret and model.
• Z-Axis Travel: Approximately 875 mm to 3,025 mm.
• Rapid Traverse Speeds: Up to 15,000 mm/min (591 ipm) on X-axis and 20,000 mm/min (787 ipm) on Z-axis.
• Cutting Feedrate: Variable from 0.001 mm/rev to 1,000 mm/rev (0.0001 to 40.0000 ipr).

Spindle Speed and Power

• Speed Range: From 12 to 3,200 min-1 (rpm), with some models offering infinitely variable speeds and multiple gear ranges.
• Spindle Motor Power: Ranges from 22 kW (30 hp) to 37 kW (50 hp) for 30 min/continuous operation.
• Milling Tool Power: Typically 5.5 kW to 7.5 kW (7 to 10 hp).
• Axis Drives Power: Around 4.6 kW (6.13 hp) for X and Z axes.
• Coolant Pump Power: Approximately 0.4 kW per pump, with side and rear discharge configurations.

Additional Features and Standards

• Spindle Taper: JIS A2-11 or JIS A2-8 depending on model.
• Control System: OSP-P300L CNC system.
• Tool Holding: MT 5 built-in for spindle and turret tools.
• Support: Single and double-centered supports available with capacities up to 1,500 kg.
• Indexing: Both lift-up and non-lift tool indexing options.

Summary of Critical Parameters

Conclusion

The document comprehensively details the specifications of Okuma LU Series CNC lathes, highlighting their versatility in workpiece size, spindle power, and tooling capacity. These machines are suitable for a wide range of turning and milling operations with high precision and efficiency, supported by robust motor power and advanced CNC control systems.