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Okuma LB3000 EX II
Okuma LB3000 EX II is the preceding LB3000 generation with a rigid slant-bed box construction and configurable bed, spindle, milling, Y-axis, sub-spindle, and tailstock packages. Official specifications publish a 16.14 in / 410 mm maximum machining diameter, 19.69 in / 500 mm standard machining length with longer options, a JIS A2-6 spindle nose, and a 45 to 5,000 rpm standard range, but the suffix and serial still control the actual machine.
- Builder: Okuma.
- Series: LB EX II Series.
- Lifecycle status: previous-generation.
- Successor: LB3000 EX III.
- Okuma continues to publish an official EX II product page and literature, while its EX III brochure identifies EX II as the preceding generation. This is not evidence that EX II is discontinued or unsupported. Treat it only as a generation crosswalk; never infer parts, option, turret, control, or tooling interchangeability.
Company overview
Okuma LB3000 EX II is the preceding LB3000 generation with a rigid slant-bed box construction and configurable bed, spindle, milling, Y-axis, sub-spindle, and tailstock packages. Official specifications publish a 16.14 in / 410 mm maximum machining diameter, 19.69 in / 500 mm standard machining length with longer options, a JIS A2-6 spindle nose, and a 45 to 5,000 rpm standard range, but the suffix and serial still control the actual machine.
Industries and applications
- Published maximum machining diameter is 16.14 in / 410 mm.
- Published maximum machining length is 19.69 in / 500 mm standard, with 39.37 and 51.18 in / 1,000 and 1,300 mm branches.
Technical and quote details
- X travel: Configuration dependent; confirm from serial-specific specification and axis package.
- Z travel: 500 mm machining-length base configuration; 1,000 and 1,300 mm length branches published.
- Spindle interface: JIS A2-6 standard; bore and spindle options vary.
- Spindle speed: 45 to 5,000 rpm published standard.
- Spindle power: 22/15 kW / 30/20 hp published standard.
- Tool capacity: Turret and driven-tool configuration depend on L, M, MY, W, MW, or MYW suffix.
- Control: Okuma OSP suite / OSP-P control; exact control generation and software revision must be read from the machine.
- Control: Digital manuals are available on equipped OSP suite controls; older or additional documentation may require the distributor.
- Control: Record axis package, enabled cycles, networking, automation, and parameter backup against serial.
- Compatibility, lineage, or lifecycle crosswalk: successor-generation to okuma-lb3000-ex-iii (manufacturer-documented-generation). EX III is the later product generation. This is not a parts, tooling, control, or option interchangeability statement; suffix and serial-specific documentation remain controlling. Evidence: https://www.okuma.com/files/documents/LB-EX-III-Series.pdf
Selection notes
Variables to validate
- Previous-generation status does not mean discontinued or unsupported; the official product page remains published and includes quote/contact paths.
- Suffix, bed length, bore, spindle, turret, driven tooling, control, build year, and serial must be captured before parts or tooling decisions.
- Official public literature is not a substitute for the machine-specific electrical drawings, parts book, parameter backup, or maintenance manual.
Official product references
Sources checked 2026-07-13. Product ranges, documents, and availability can change.