China NXX-46BL Slant Bed CNC Lathe with Rotary Turret - Top Suppliers & Factory Solutions
Key Structural Features
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To meet the demands of heavy-duty and high-precision machining, this machine features a monolithic cartridge-type spindle design. It is equipped with a '3-front, 2-rear' configuration of imported precision-grade bearings and driven by a high-performance spindle servo motor. This setup ensures high rigidity, superior accuracy, and consistently stable speeds, effortlessly handling heavy-load tasks. The machine bed is cast from high-quality iron using the resin sand process. The 30° slant bed structure, reinforced with dense internal ribbing, significantly enhances structural rigidity and vibration dampening, while simultaneously optimizing the ergonomic workspace and chip evacuation efficiency.
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The motion axes are equipped with high-rigidity linear guideways and precision pre-tensioned ball screws, which are directly coupled to the servo motors via flexible couplings. This configuration, integrated with an intelligent automated lubrication system, ensures forced lubrication for both rails and screws. This results in superior positioning accuracy, minimized thermal deformation, and achieves rapid traverse speeds of up to 30 m/min.
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Hydraulic station incorporates renowned Taiwanese variable displacement pumps, hydraulic motors, and solenoid valves. Equipped with a high-efficiency air-cooling system, it ensures low operational noise and consistent oil temperature control, providing a reliable power source for long-term continuous operation.
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Available with either hydraulic or servo rotary turrets, the system offers superior rigidity and rapid tool-changing speeds. It supports bi-directional shortest-path tool selection, with an indexing time of only 0.3–0.5 seconds. The tool capacity remains unaffected by workpiece size, making it ideally suited for heavy-duty machining of disk-type components.
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The machine features a fully enclosed splash guard with a modern aesthetic and superior sealing performance. The sliding doors operate smoothly and are equipped with a safety interlocking mechanism, ensuring maximum operator protection and comprehensive equipment safety.
Product Display
Main Technical Specifications
| Item | Unit | NXX-46B | NXX-46BL | |
| Max. Swing Over Bed | mm | Φ480 | Φ500 | |
| Max. Machining Length | mm | 320 | 360 | |
| Max. Swing Over Turret Carriage | mm | Φ125 | Φ220 | |
| Max. Turning Dia. (Disk / Shaft) | mm | Φ380/φ125 | Φ480/φ220 | |
| Spindle Bore Diameter | mm | Φ56 | Φ56 | |
| Max. Bar Capacity | mm | Φ45 | Φ45 | |
| Spindle Speed Range | r/min | 0-4000 | 0-4000 | |
| Spindle Speed Steps | Step | CV | CV | |
| Spindle Nose | Flange Type A2-5 | Flange Type A2-5 | ||
| Main Motor Power (Spindle) | Kw | 7.5 | 7.5 | |
| Bed Slant Angle | Angle | 30 | 30 | |
| X-axis Rapid Traverse Rate | m/min | 24 | 24 | |
| Z-axis Rapid Traverse Rate | m/min | 30 | 30 | |
| Max. X-axis Travel (Single Direction) | mm | 600 | 500 | |
| Max. Z-axis Travel | mm | 425 | 420 | |
| X/Z Axis Servo Motor Power | mm | 1.3 | 1.8 | |
| Spindle Radial & Axial Run-out | mm | ≤0.003 | ≤0.003 | |
| Spindle Facing Flatness Accuracy | mm | ≤0.01/Φ100 | ≤0.01/Φ100 | |
| Repeatability Accuracy | X-axis | mm | ±0.0025 | ±0.0025 |
| Z-axis | mm | ±0.0025 | ±0.0025 | |
| Standard Turret Type | Servo Indexing Turret | Servo Indexing Turret | ||
| Max. Number of Tools | pcs | 12 | 12 | |
| Tool-to-Tool Indexing Time | 0.3 | 0.3 | ||
| Tool Size | O.D. Tool | mm | 25×25 | 25×25 |
| Boring Bar Diameter | mm | Φ32 | Φ32 | |
| Total Power Consumption | Kw | 11 | 12 | |
| Machine Weight (Approx.) | kg | 2950 | 3100 | |
| Overall Dimensions (L×W×H) | mm | 2280×1850×1940 | 2350×1875×1940 | |
Frequently Asked Questions
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What is the difference between the NXX-46B and NXX-46BL models?
The NXX-46BL offers a larger max swing over bed (Φ500mm vs Φ480mm), a greater max machining length (360mm vs 320mm), and a larger max swing over turret carriage (Φ220mm vs Φ125mm). The NXX-46BL is better suited for heavier and larger disk-type workpieces, while both models share the same spindle bore, speed range, and precision accuracy specifications.
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What type of spindle bearing configuration does this machine use?
The machine uses a monolithic cartridge-type spindle design equipped with a '3-front, 2-rear' configuration of imported precision-grade bearings. This arrangement provides exceptional rigidity, superior rotational accuracy, and stable high-speed performance suitable for demanding heavy-duty machining tasks.
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How fast is the tool indexing on the turret system?
The standard servo indexing turret achieves a tool-to-tool indexing time of just 0.3 seconds. The system supports bi-directional shortest-path tool selection, meaning it always chooses the fastest rotation direction, significantly reducing non-cutting time and improving overall machining efficiency.
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What precision accuracy can be expected from the NXX-46B/BL series?
Both models deliver a repeatability accuracy of ±0.0025mm on both X and Z axes. Spindle radial and axial run-out is ≤0.003mm, and spindle facing flatness accuracy is ≤0.01mm over Φ100mm. These specifications make the machines highly suitable for precision component manufacturing.
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What lubrication system does the machine use for the guideways and ball screws?
The machine is integrated with an intelligent automated lubrication system that provides forced lubrication to both the linear guideways and precision pre-tensioned ball screws. This ensures consistent lubrication coverage, minimizes thermal deformation, extends component service life, and maintains high positioning accuracy throughout long-term operation.
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Is the hydraulic system reliable for continuous production use?
Yes. The hydraulic station uses renowned Taiwanese variable displacement pumps, hydraulic motors, and solenoid valves, complemented by a high-efficiency air-cooling system. This combination ensures low operational noise, consistent oil temperature control, and stable hydraulic pressure — all critical for reliable, uninterrupted long-term continuous production environments.