CNC Slant Bed Lathe NXX-52D: Precision Machining from China’s Top Suppliers and Factory Solutions
Structural Features
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The spindle system features a high-precision, high-rigidity cartridge-type design, specifically optimized for heavy-duty machining. The structural configuration utilizes a 'front-three-rear-two' (triplex-front, duplex-rear) arrangement of imported precision-grade bearings. Combined with a direct-drive spindle servo motor, the system achieves exceptional rotational accuracy, dynamic rigidity, and speed stability, ensuring superior machining quality and high efficiency even under heavy cutting conditions.
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The machine bed is constructed from premium monolithic cast iron using a resin-sand precision casting process with a 30° slant layout. The internal structure is reinforced with high-rigidity ribbing, significantly enhancing the machine's natural frequency and damping characteristics. This design offers outstanding anti-vibration performance. Furthermore, the slanted bed provides the operator with an unobstructed view and easier access, while ensuring gravity-assisted chip removal for enhanced efficiency and workplace safety.
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The feed mechanism operates through the synergy of high-rigidity linear guideways and precision pre-tensioned ball screws. Both X and Z axes are directly driven by high-performance servo motors via flexible couplings, eliminating backlash and enhancing transmission efficiency. An intelligent centralized lubrication system provides forced lubrication and cooling to the guideways and ball screws, supporting rapid traverse rates of up to 30 m/min while maintaining exceptional positioning accuracy and thermal stability.
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Hydraulic system integrates premium Taiwanese components, including variable displacement pumps, hydraulic motors, and solenoid valves, complemented by a high-efficiency air-cooled radiator. This setup ensures low-noise operation and precise oil temperature control, guaranteeing reliable hydraulic movements. The machine offers a choice of hydraulic or servo indexing turrets, featuring a robust construction with rapid tool changes (0.3 – 0.5 sec) and bi-directional shortest-path indexing. This configuration is specifically engineered to meet the rigorous demands of heavy-duty disk-type workpiece machining.
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The tailstock is hydraulically driven, enabling automatic quill extension and retraction. It offers superior rigidity and ease of adjustment, significantly expanding the machine's capability for processing long-shaft workpieces.
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Machine is equipped with an aesthetic fully-enclosed protection guard, providing excellent waterproof and chip-proof performance. The sliding doors operate smoothly and are integrated with safety interlocking protection. This design not only enhances the machine's overall appearance but also provides comprehensive safety assurance for both the operator and the equipment.
Product Display
Key Technical Specifications
| Item | Unit | NXX-46D | NXX-52D | ||
| Max. Swing Over Bed | mm | Ф450 | Ф450 | ||
| Max. Machining Length | mm | 500 | 500 | ||
| Max. Swing Over Turret Carriage | mm | Φ220 | Φ220 | ||
| Max. Turning Dia. (Disk / Shaft) | mm | Φ450/Φ220 | Φ450/Φ220 | ||
| Spindle Bore Diameter | mm | Φ56 | Φ62 | ||
| Max. Bar Capacity | mm | Φ45 | Φ51 | ||
| Spindle Speed Range | r/min | 0-4000 | 0-3000 | ||
| Spindle Speed Steps | Step | CV | CV | ||
| Spindle Nose | Flange Type A2-5 | Flange Type A2-5 | |||
| Main Motor Power (Spindle) | Kw | 7.5 | 11 | ||
| Bed Slant Angle | ° | 30 | 30 | ||
| X-axis Rapid Traverse Rate | m/min | 30 | 30 | ||
| Z-axis Rapid Traverse Rate | m/min | 30 | 30 | ||
| Max. X-axis Travel (Single Direction) | mm | 500 | 500 | ||
| Max. Z-axis Travel | mm | 550 | 550 | ||
| X/Z Axis Servo Motor Power | mm | 1.3 | 1.3 | ||
| Tailstock Quill Diameter | mm | Φ80 | Φ80 | ||
| Tailstock Quill Travel | mm | 80 | 80 | ||
| Tailstock Spindle Taper | MT | 4＃ | 5＃ | ||
| Tailstock Body Travel (Manual/Hydraulic) | mm | 480 | 480 | ||
| Spindle Run-out（Radial/Axial） | mm | ≤0.003 | ≤0.003 | ||
| Spindle Face Flatness / Spindle Nose Run-out | 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 | 160-10 Station Hydraulic Indexing Turret | 160-10 Station Hydraulic Indexing Turret | |||
| Max. Number of Tools | pcs | 10 | 10 | ||
| Tool-to-Tool Indexing Time | S | 0.5 | 0.5 | ||
| Tool Size | O.D. Tool | mm | 25×25 | 25×25 | |
| Boring Bar Diameter | mm | Φ32 | Φ32 | ||
| Total Power Consumption | Kw | 11 | 14.5 | ||
| Machine Weight (Approx.) | kg | 3300 | 3500 | ||
| Overall Dimensions (L×W×H) | mm | 2700×1810×1880 | 2700×1810×1880 | ||
Frequently Asked Questions
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What is the difference between the NXX-46D and NXX-52D CNC slant-bed lathe models?
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The primary differences lie in the spindle bore diameter (Φ56mm vs. Φ62mm), max. bar capacity (Φ45mm vs. Φ51mm), spindle speed range (0–4000 r/min vs. 0–3000 r/min), main motor power (7.5 Kw vs. 11 Kw), and total power consumption (11 Kw vs. 14.5 Kw). The NXX-52D is suited for larger diameter workpieces requiring higher torque, while the NXX-46D offers higher spindle speed for smaller parts.
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What is the significance of the 30° slant bed design on these CNC lathes?
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The 30° slant bed design provides several key advantages: it enables gravity-assisted chip removal to keep the work area clean, offers the operator an unobstructed view of and easier access to the cutting zone, and enhances the machine's rigidity and vibration damping characteristics thanks to the reinforced internal ribbing structure — all contributing to improved machining quality and operator safety.
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How fast is the tool indexing on the standard hydraulic turret, and how many tools can it hold?
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Both the NXX-46D and NXX-52D are equipped with a 160-10 Station Hydraulic Indexing Turret that holds up to 10 tools. The tool-to-tool indexing time is 0.5 seconds, with bi-directional shortest-path indexing to minimize non-cutting time and maximize overall machining efficiency.
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What positioning and repeatability accuracy can be expected from the X and Z axes?
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Both the X-axis and Z-axis achieve a repeatability accuracy of ±0.0025 mm on both models. This high precision is made possible by the combination of high-rigidity linear guideways, precision pre-tensioned ball screws, direct-drive servo motors, and an intelligent centralized lubrication system that maintains thermal stability during operation.
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Is the tailstock on the NXX-46D / NXX-52D manually or hydraulically operated?
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The tailstock is hydraulically driven, enabling automatic quill extension and retraction. With a quill diameter of Φ80mm, a quill travel of 80mm, and a body travel of 480mm, it provides superior rigidity and ease of adjustment — significantly expanding the machine's capability for processing long-shaft workpieces with minimal operator effort.
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What safety and protection features are included with these CNC lathes?
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Each machine is fitted with a fully-enclosed aesthetic protection guard offering excellent waterproof and chip-proof performance. The smooth-operating sliding doors incorporate safety interlocking protection to prevent accidental access during machining. This comprehensive enclosure design protects both the operator and the machine, while also enhancing the overall appearance of the equipment on the shop floor.