Hyundai WIA L5100LY
Key Specifications
Max Spindle
Spindle Power
Max Turn Length
max turning diameter
chuck size
spindle torque
Overview
The Hyundai WIA L5100LY is a large-bore, long-bed heavy-duty turning center with Y-axis milling capability, extending the L5100L platform with off-center machining for large-diameter workpieces. With a 21-inch chuck, 45/37 kW (60/50 hp) gear-driven spindle, and box way construction on all axes, the L5100LY handles the most demanding large-diameter turning and milling applications in oil and gas, power generation, and heavy equipment manufacturing.
The gear-driven spindle delivers 45/37 kW at up to 1,500 RPM with torque exceeding 2,990 N.m, delivering full torque across the entire speed range essential for heavy roughing on large forgings and castings. Maximum turning diameter reaches 690 mm (27.2 in) with turning length of 2,120 mm (83.5 in), matching the L5100LM variant dimensions. X-axis travel of 400 mm and Z-axis travel of 2,170 mm provide the generous work envelope needed for large oil and gas components, turbine shafts, and structural tubes.
The Y-axis addition transforms the L5100L from a pure turning platform into a large-bore mill-turn machine. Y-axis travel of approximately 120 mm enables off-center milling, cross-drilling, and tapping operations on large workpieces that would otherwise require crane transfer to a horizontal boring mill or large VMC. The 12-station turret with 32/60 mm heavy-duty tooling and live milling at 4,000 RPM handles the full range of turning and milling operations.
New L5100LY machines price between $320,000 and $420,000. The L5100LY competes with the Mazak QT-500MY, Okuma LB55 II MY, and DN Solutions Puma 5100LM in the large-bore Y-axis segment. For shops machining large-diameter parts that require both heavy turning and off-center milling, the L5100LY eliminates the need to move workpieces between machines — a significant productivity and accuracy advantage when dealing with components that weigh hundreds or thousands of kilograms.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 690 mm (27.2 in) |
| Max Turning Length | mm |
| Chuck Size | inch |
| Max Spindle Speed | 1,500 RPM |
| Spindle Motor Power | 45/37 kW (60/50 hp) |
| Spindle Torque | N.m |
| Spindle Drive | Gear |
| X Axis Travel | 400 mm (15.7 in) |
| Y Axis Travel | 120 mm (4.7 in) |
| Z Axis Travel | 2,170 mm (85.4 in) |
| Rapid Traverse X | 20 m/min (787 ipm) |
| Rapid Traverse Z | 18 m/min (709 ipm) |
| Turret Stations | 12 |
| Tool Size | mm |
| Live Tool Speed | 4,000 RPM |
| Guideway Type | Box ways (all axes) |
| CNC Control | Fanuc 0i-TF Plus |
| Description | Unit |
| Max Turning Dia | mm |
| Spindle Rpm | r/min |
| Spindle Output | kW |
| Travel | mm |
| Rapid Travel | m/min |
| No Of Tools | EA |
| Milling Tool Speed | r/min |
| Type Of Business | Business Type 1VehiclesIT/ElectronicsMachinery/ShipbuildingComplex & Precise PartsDie&Mold IndustryEnergyOthersBusiness Type 2 |
| E Mail | @ |
Specifications sourced from wiamachine.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Y-axis adds off-center milling to a large-bore platform, eliminating crane transfers to secondary machines for cross-drilling and milling
- 45/37 kW gear-driven spindle delivers full torque across the entire speed range for aggressive roughing on large forgings
- 690 mm turning diameter and 2,120 mm turning length handle the largest industrial shaft and tubular components
- Box way construction on all axes ensures maximum rigidity for heavy-duty cutting on large, heavy workpieces
- 21-inch chuck provides massive clamping force for secure workholding on heavy, large-diameter components
- 4,000 RPM live tooling enables productive milling operations on large parts without machine transfer
Limitations
- 1,500 RPM spindle speed is strictly for large-diameter work — not suitable for small part finishing
- Major floor space and foundation investment required for a machine of this capacity and weight
- High capital cost ($320K-$420K) requires clear production volume justification and ROI analysis
- 18 m/min Z-axis rapid traverse increases non-cutting time on complex programs with many tool changes
Best For
Frequently Asked Questions
01
The L5100LY adds Y-axis travel for off-center milling operations. The L5100LM has live milling tooling but no Y-axis — milling is limited to on-center operations. The L5100LY costs approximately $30,000-$50,000 more but enables keyway milling, cross-drilling, and contoured features that the LM cannot produce without workpiece repositioning.
02
New L5100LY machines price between $320,000 and $420,000 depending on options including high-pressure coolant, steady rests, follow rests, chip conveyor, and software packages. This positions it at the upper end of the L5100L family but below dedicated large-bore mill-turn machines from European manufacturers.
03
Standard 21-inch hydraulic chuck with various jaw configurations. Steady rests and follow rests are essential for long shaft work and available from Hyundai WIA and aftermarket suppliers. Custom soft jaws, collet systems, and specialty fixtures can be sourced for specific applications. The machine can also accept 24-inch chuck configurations in the LC variant.
04
Moving a 500+ kg workpiece by crane between a lathe and boring mill introduces alignment errors, adds setup time, and creates scheduling bottlenecks. The L5100LY performs both turning and off-center milling in a single clamping, maintaining concentricity between turned and milled features and eliminating the crane transfer entirely. For shops doing this repeatedly, the productivity gain justifies the Y-axis investment.
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