Stama MT 733 Twin

The Stama MT 733 Twin is a twin-spindle mill-turn machining center combining full turning capability with 5-axis simultaneous milling in a single production platform. The MT 733 Twin represents Stama's highest-capability mill-turn offering, integrating dual main spindles, a B-axis milling head, and turning tool holders to complete complex rotational components in a single setup — and doubling output through simultaneous twin-spindle operation.

The mill-turn concept in the MT 733 Twin addresses the fundamental efficiency problem in complex component production: rotating parts that require both turning and milling operations typically shuttle between separate lathes and machining centers, accumulating setup time, fixturing error, and in-process queue time. The MT 733 Twin collapses this multi-machine workflow into one setup, one operator station, and one quality checkpoint, typically reducing total part cycle time by 40-60% compared to multi-machine routing.

The B-axis milling head is the defining feature that elevates the MT 733 Twin above basic live-tool lathes. With full B-axis swivel, the spindle can approach the rotating workpiece at any angle, enabling helical grooves, compound-angle cross-holes, complex flats, and 5-axis contoured surfaces that are impossible on conventional turn-mill centers with fixed-angle live tool stations. This makes the MT 733 Twin viable for aerospace fastener components, automotive steering shafts, medical bone screws, and hydraulic valve spools that require compound geometry.

The twin-spindle arrangement adds a second identical machining station operating in parallel, doubling production output while sharing the machine's footprint, automation system, and operator attention. Twin-spindle mill-turn is particularly powerful for high-volume complex turned parts where the combination of single-setup accuracy and doubled throughput creates a compelling cost-per-part advantage over conventional multi-machine workflows.