The Skymach CK61125B Heavy-Duty Flat Bed CNC Horizontal Lathe is engineered on a 755 mm ultra-wide monolithic induction-hardened cast iron bed, delivering massive cutting stability for large-scale turning of heavy forgings, turbine rotors, oilfield tubes, rolls, and marine drive shafts. Featuring a Φ1250 mm swing over bed, an 18 kW high-torque spindle motor, an ISO A2-15 spindle nose with Φ130 mm through-hole, a 300x300 vertical 4-station electric turret, and an electric-driven heavy tailstock, the CK61125B handles rough roughing and fine finishing with IT6-IT7 precision.
Comprehensive Machining Capabilities
- 755 mm Extra-Wide Integral Bed: Massive monolithic casting provides exceptional anti-vibration damping, handling workpieces weighing tens of tons without bed deflection.
- High-Torque 18 kW Spindle Drive: 4-step manual range with stepless speed control (3.15 - 315 RPM) produces massive torque for deep cuts in hardened alloy steels.
- Heavy Tooling Capacity: 300x300 mm 4-station vertical turret supports 40x40 mm tool shanks and Φ40 mm heavy boring bars for deep-hole machining.
Key Engineering Highlights
- Planetary Reduction Servos: X and Z axes feature preloaded ball screws paired with 1:3 and 1:5 planetary reducers for immense axis thrust during heavy cuts.
- Motorized Heavy Tailstock: Φ160 mm quill with Metric 80 taper and electric carriage positioning simplifies setup on long shafts.
- External Oil-Shower Lubrication: Continuous lubrication and heat dissipation keep spindle thermal expansion to an absolute minimum.
Technical Parameters
| Max. Swing Diameter Over Bed | Φ1250 mm |
|---|---|
| Max. Swing Over Cross Slide | Φ860 mm |
| Max. Cutting Diameter | Φ1250 mm |
| Max. Processing Length | 1500 / 2000 / 3000 / 4000 / 5000 / 6000 / 8000 mm (Customizable up to 20,000 mm) |
| Max. Cutting Length | 1300 / 1800 / 2800 / 3800 / 4800 / 5800 / 7800 mm |
| Max. Diameter Through the Bar | Φ130 mm |
| Bed Foot Structure | Integral Bed |
| Guideway Width | 755 mm |
| Spindle Speed | 3.15 - 315 r/min |
| Main Spindle Motor | 18 kW (Level 6) |
| Spindle Nose Type | ISO A2-15 |
| Spindle Bore | Φ130 mm |
| Spindle Taper Hole Specification | Φ140 (1:20) |
| Number of Spindle Speed Steps | Manual 4 steps, stepless speed changing |
| Main Spindle Bearing | NN3040K/P5 |
| Height From Spindle Center to Ground | 1325 mm |
| X Axis Travel | 700 mm |
| Z Axis Travel | 800 / 1300 / 1800 / 2800 / 3800 / 4800 / 5800 / 7800 mm |
| X-Axis Rapid Feed | 3 m/min (Add 1:3 planetary reducer) |
| Z-Axis Rapid Feed | 4 m/min (Add 1:5 planetary reducer) |
| X-Axis Screw Diameter / Pitch | 40/06 (Nanjing Technology) |
| Z-Axis Screw Diameter / Pitch | 80/12 (Nanjing Technology) |
| X / Z Axis Motor Torque | 15 N.m / 18 N.m |
| Tailstock Quill Diameter / Travel | 160 / 300 mm |
| Tailstock Quill Taper | Metric 80 |
| Sleeve Drive System | Manual |
| Tailstock Drive | Electric Powered |
| Turret Type | 300 x 300 Vertical 4 Station |
| External Turning Tool Shank Specification | 40 x 40 mm |
| Max. Diameter of Boring Tool Holder | Φ40 mm |
| X-Axis Positioning Accuracy | 0.03 mm |
| Z-Axis Positioning Accuracy | 0.03 mm (1000) / 0.05 mm (1500) |
| X-Axis Repeated Positioning Accuracy | 0.009 mm |
| Z-Axis Repeated Positioning Accuracy | 0.014 mm (1000) / 0.018 mm (1500) |
| Manual Chuck Diameter | Φ1000 mm Four-jaw single-action chuck |
| Steady Rest & Follow Rest | Above 3000 length includes steady rest Φ150-Φ600 and follow rest Φ50-Φ260 |
| CNC System | GSK980TB3i |
| Total Electrical Capacity | 50 kVA |
| Machine Weight | 10200(1500) / 10800(2000) / 11900(3000) / 13000(4000) / 14500(5000) / 15400(6000) / 17900(8000) kg |
Frequently Asked Questions
What is the warranty period for your machines?
We offer a standard 12-month warranty on all our CNC machines, covering the spindle assembly, ball screws, linear guides, CNC controller, and servo drive motors. Extended warranties and customized service plans are available upon request.
Do you provide overseas installation and training?
Yes. Our engineers are available for overseas dispatch to assist with machine installation, commissioning, and comprehensive operator training at your facility. Every machine also ships with English manuals, circuit diagrams, and video setup guides.
What is the typical lead time for an order?
Standard catalog machines ship within 30 days. Custom configurations — such as oversized spindle bores, extended bed lengths, or integrated 4th-axis rotary tables — typically ship within 60 days.
How do you handle spare parts requests?
We maintain a comprehensive inventory of standard spare parts. Genuine replacement components are dispatched via international express (DHL/FedEx) within 48 hours, ensuring minimal downtime for your production line.
