Okuma LT2000 EX
Key Specifications
Rapid Traverse
Max Turn Length
max turning diameter
swing over bed
main spindle speed
main spindle power
Overview
The Okuma LT2000 EX is a twin-spindle, twin-turret horizontal turning center built for high-productivity production of small to mid-size parts. Unlike single-turret LB-series lathes, the LT2000 EX carries two independent turrets working simultaneously on the same workpiece or performing separate operations on the main and sub-spindle, dramatically reducing cycle times on parts requiring front and back machining.
Max turning diameter is 250 mm (9.8 in) with a swing over bed of 400 mm (15.7 in). The main spindle delivers 15/11 kW (20/15 hp) at up to 5,000 RPM, while the sub-spindle provides 11/7.5 kW (15/10 hp) at up to 5,000 RPM. Both spindles use A2-6 nose connections with 8-inch chucks. Bar capacity is 54 mm (2.1 in). Standard turning length is 250 mm (9.8 in).
Each turret carries 12 stations with BMT mounting for driven tools at up to 6,000 RPM. Y-axis capability is available on both turrets, enabling complex off-center milling on the upper and lower tooling simultaneously. This twin-turret architecture cuts cycle times by 30-50% compared to single-turret lathes on parts requiring multiple tools and operations.
Okuma's OSP-P300L control manages the synchronization between the two turrets and two spindles with collision-free operation supported by the Collision Avoidance System. The control's twin-turret programming environment handles simultaneous cutting, sequential operations, and automatic part transfer between spindles. Thermo-Friendly Concept maintains accuracy across both spindle assemblies.
The LT2000 EX competes with the Mazak QUICK TURN 200MSY, DMG Mori NLX 1500/500, and Nakamura-Tome WY-100II in the compact twin-spindle/twin-turret segment. It's a significant investment over a single-turret LB2000 EX, but shops running volume production find the cycle time savings pay for the premium within months. Specs sourced from Okuma published data.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | Ø210 |
| Max Turning Length | 130 |
| Swing Over Bed | 400 mm (15.7 in) |
| Main Spindle Speed | 5,000 RPM |
| Main Spindle Power | 15/11 kW (20/15 hp) |
| Sub Spindle Speed | 5,000 RPM |
| Sub Spindle Power | 11/7.5 kW (15/10 hp) |
| Spindle Nose | A2-6 |
| Chuck Size | 8 in (210 mm) |
| Bar Capacity | 54 mm (2.1 in) |
| Turret Stations | 12 per turret (2 turrets, 24 total) |
| Driven Tool Speed | 6,000 RPM (BMT) |
| Rapid Traverse Rate | X/Z: 30/40 C: 200 rpm Y: 15 |
| Machine Weight | 6,200 kg (13,669 lb) |
| CNC Control | Okuma OSP-P300L |
| Speed Range | 50~6,000 [50~5,000 (left spindle only) |
| Standard Power | L&R: 11/7.5 [22/15] |
| Okuma Global Repair Center | Charlotte, North Carolina |
| Inches | Metric |
| Spindle Nose Type | Ø140 flat [A2-6] |
Specifications sourced from okuma.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Twin turrets working simultaneously cut cycle times 30-50% compared to single-turret lathes on complex parts
- Twin spindles enable complete front and back machining without manual part flipping or secondary operations
- 24 total tool stations (12 per turret) eliminate tool changes on most parts, further reducing cycle time
- BMT driven tools at 6,000 RPM on both turrets provide full mill-turn capability on main and sub-spindle
- Collision Avoidance System manages complex twin-turret interference checking in real time
- Thermo-Friendly Concept maintains accuracy across both spindle assemblies during extended production
Limitations
- Starting at $200K, the twin-turret/twin-spindle investment is nearly double a single-turret LB2000 EX III
- Programming complexity is significantly higher than single-turret lathes; operators need twin-turret training
- 250 mm max turning diameter limits part size; larger work needs the LT3000 EX
- Setup time for twin-turret jobs is longer than single-turret work due to synchronization requirements
- OSP twin-turret programming has a steeper learning curve than competing Fanuc-based twin-turret controls
Best For
Frequently Asked Questions
01
New LT2000 EX machines with twin turrets and twin spindles run $200,000-$320,000 depending on configuration. Y-axis on both turrets and full driven tool capability push toward the higher end. Used machines from 2015-2020 sell for $100,000-$170,000 depending on hours and options.
02
On parts that require multiple tools and front/back machining, the LT2000 EX typically reduces cycle times by 30-50%. Simple parts with few tool changes see less benefit. The biggest gains come on parts with 6+ tools and back-side features that would require a second setup on a single-turret machine.
03
It's more complex than single-turret programming because you're managing two turrets, two spindles, synchronization timing, and collision avoidance simultaneously. Okuma's OSP control provides a dedicated twin-turret programming environment with graphical simulation. Most shops need 2-4 weeks of operator training to become proficient. CAM support from Mastercam, Esprit, and GibbsCAM is available.
04
Yes. Both turrets can perform cutting operations simultaneously on the same workpiece or on different spindles. The control manages the synchronization, and the Collision Avoidance System prevents interference. Balanced cutting with both turrets engaged is the primary method for achieving the 30-50% cycle time reduction.
05
The Mazak QT-200MSY is a single-turret machine with sub-spindle and Y-axis. The LT2000 EX has twin turrets plus sub-spindle, giving it more tool stations (24 vs 12) and the ability to cut with both turrets simultaneously. The Mazak costs less and is simpler to program. Choose the Mazak for moderate complexity parts; choose the LT2000 EX when maximum productivity justifies the investment.
Videos
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Community Discussions
Troubleshooting and problem-solving — Need Help! Okuma LT2000 EX - CNCzone
Community discussion — Need Help! OKUMA LT2000EX not staying synced right - CNCzone
Troubleshooting and problem-solving — Okuma LT2000EX problems - CNCzone
Community discussion — Okuma LT2000EX - CNCzone
Pricing and buying discussion — our new okuma LT2000EX Unloader in action. : r/MachinistsWhat are your experience with okuma machines? : r/Machinistsnew Okuma! : r/Machinists - RedditOkuma...Love or Hate? : r/Machinists - RedditOkuma Problem.. : r/Machinists - Redditquestion for all CNC lathe people
Pricing and buying discussion — What are your experience with okuma machines? :
Community discussion — new Okuma! : r/Machinists - Reddit
Community discussion — Okuma...Love or Hate? : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.
