Okuma MB-80V

The Okuma MB-80V is the largest machine in Okuma's premium MB-V box-way vertical machining center series, offering an expansive 1,600 x 800 x 630 mm (63.0 x 31.5 x 24.8 in) of travel. Built for shops that need to machine large workpieces with the surface finish quality that only hand-scraped box ways deliver, the MB-80V fills the gap between standard VMCs and double-column machines.

The spindle delivers 6,000 RPM standard with 15/11 kW (20/15 hp) through a No. 50 (BT 50) taper, a step up from the BT 40 on the smaller MB models. The BT 50 taper provides the clamping force needed for large-diameter face mills and heavy roughing operations that the MB-80V's travel envelope invites. Optional spindle speeds reach 8,000, 10,000, and 12,000 RPM with a 22/15 kW (30/20 hp) motor option.

The 1,800 x 800 mm (70.9 x 31.5 in) table with a 1,500 kg (3,307 lb) load capacity accommodates large mold bases, die plates, and structural components. At this size, the hand-scraped box-way construction becomes essential: heavy workpieces combined with large cutting forces on long passes generate the kind of vibration that would degrade surface finish on roller-guide machines.

The 630 mm (24.8 in) Z-travel provides substantial depth for deep cavity work, tall fixture setups, and parts with significant vertical features. Combined with the wide Y-axis at 800 mm, the MB-80V handles workpieces approaching double-column machine territory.

Okuma's Thermo-Friendly Concept manages thermal growth across the large machine structure, critical when finish passes span 1,600 mm of X-travel where even small thermal errors compound. The OSP-P300A control with Collision Avoidance System is standard.

New MB-80V machines run $195,000-$260,000. At this size, competitors include the Mazak VTC-800/30SR, Doosan DNM 750, and Hyundai Wia KF7600. The MB-80V's box-way construction and BT 50 spindle set it apart for heavy-duty precision work.