Overview

This document provides detailed technical specifications for the Okuma LU-35/45 Series CNC lathes, including various models such as LU-45 and LU-45M. It covers machine capacities, spindle and turret details, motor power, feed rates, dimensions, and other critical parameters.

1. Machine Capacity and Dimensions

• Swing Over Bed: Ranges from 555 mm (21.85 in.) to 840 mm (33.07 in.) depending on model.
• Swing Over Saddle: Approximately 650-660 mm (25.59-25.98 in.).
• Distance Between Centers: Options include 850 mm (33.46 in.), 1,500 mm (59.06 in.), 2,000 mm (78.74 in.), and up to 3,000 mm (118.11 in.) for some models.
• Max Turning Diameter: Matches swing over bed dimensions, up to 840 mm (33.07 in.).
• Max Work Length: Varies by model, from 600 mm (23.62 in.) to 3,000 mm (118.11 in.).
• Machine Footprint: Floor space ranges from approximately 4,535 x 2,570 mm to 7,900 x 2,939 mm.
• Weight: Between 9,000 kg (19,800 lb) and 23,500 kg (51,700 lb) depending on configuration.

2. Axis Travel and Movement

• X-Axis Travel: Typically 1,570 mm (61.81 in.) to 2,070 mm (81.49 in.) for upper turret (UT) and slightly less for lower turret (LT).
• Z-Axis Travel: Ranges from 1,525 mm (60.04 in.) to 2,025 mm (79.72 in.) for UT and LT.
• C-Axis: Full 360° rotation available.

3. Spindle and Turret Specifications

• Spindle Nose: JIS A2-11 standard.
• Spindle Bore Diameter: Varies, with some models featuring big bore spindles (e.g., 440 mm with sub-sections).
• Spindle Speed Range: 40 to 2,000 rpm standard; some models up to 3,200 rpm.
• Number of Speeds and Ranges: Typically 4 ranges, including gear and motor coil switched ranges.
• Turret Type and Tool Stations: Upper turret (UT) with 12 stations, lower turret (LT) with 10 stations; tool shank heights around 32 x 32 mm or 25 x 25 mm depending on model.
• Indexing Time: Approximately 0.3 to 0.7 seconds, with lift-up or non-lift indexing options.

4. Motors and Power

• Spindle Motor Power: Ranges from 37 kW (50 hp) to 45 kW (60 hp) for high-power motors.
• Live Tool Motor Power: Around 7.5 kW (10 hp) to 5.5 kW (7 hp).
• Feed Drives and Coolant Pump: Feed drives approximately 0.4 kW (0.7 hp); coolant pumps vary around 0.4 kW (0.7 hp).
• Power Supply: Wide range VAC options, typically 37/30 or 45/37 VAC.

5. Feed Rates and Rapid Traverse

• Feed Rates: Cutting feed rates range from 0.001 to 1,000 mm/rev (0.0001 to 40 ipr).
• Rapid Traverse Speeds: X-axis up to 15,000 mm/min (591 ipm), Z-axis up to 20,000 mm/min (787 ipm).

6. Tailstock and Additional Features

• Tailstock Travel: Approximately 120 mm (4.72 in.).
• Quill Diameter and Travel: Not specified or not applicable in some models.
• Control System: Okuma OSP-P200LA CNC system.

7. Notes and Remarks

• Upper Turret (UT) and Lower Turret (LT) specifications are often given separately.
• Some models include big bore spindles and high-power motors as options.
• Tool shank sizes and turret configurations vary between models, including VDI and M-type tool holders.
• Dimensions and weights are approximate and depend on specific machine configurations.

Summary

The Okuma LU-35/45 Series CNC lathes offer a range of configurations suitable for medium to large turning operations, with flexible turret and spindle options, powerful motors, and precise feed and speed controls. The machines support a variety of workpiece sizes and lengths, with robust construction reflected in their weight and footprint. The detailed specifications ensure suitability for diverse machining tasks requiring high accuracy and productivity.