China NXX-46B CNC Lathe with Rotary Turret - High Precision Suppliers and Factory Solutions
Machine Structural Features
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Dedicated to the high-performance CNC machining sector, this precision machine tool is equipped with an integrated cartridge spindle system. The spindle incorporates a 'front-3-rear-2' layout of imported precision-grade bearings, coupled with a direct-drive spindle servo motor. This configuration guarantees exceptional machining accuracy, robust structural rigidity, and superior speed stability, meeting the stringent requirements of heavy-duty cutting operations. The machine bed is cast from premium-grade cast iron using a resin-sand molding process. Featuring a 30° slant bed architecture and a dense internal reinforcement rib layout, it delivers outstanding overall rigidity and vibration damping, while simultaneously optimizing ergonomic accessibility and chip evacuation efficiency.
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The X and Z axes are driven by high-performance servo motors direct-coupled to precision pre-tensioned ball screws via flexible couplings. In combination with high-rigidity, high-precision linear guideways and an integrated computerized automatic lubrication system for forced oiling of both guides and screws, the system achieves rapid traverse speeds up to 30m/min. This ensures precise positioning with minimal thermal deformation during high-speed operations.
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The hydraulic system incorporates Taiwanese-branded variable displacement pumps, hydraulic motors, and solenoid valves, integrated with an independent air-cooling unit to ensure low-noise operation and stable oil temperature control. The turret system offers options for hydraulic or servo-driven rotary turrets, featuring robust structural rigidity and bi-directional logic indexing (shortest path tool selection). With a rapid tool-change time of only 0.3–0.5 seconds and a tool capacity unrestricted by workpiece dimensions, it is particularly optimized for the heavy-duty machining of disk-type components.
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The entire machine is encased in a fully enclosed guarding system with streamlined aesthetics and superior waterproof sealing. The lightweight sliding doors operate effortlessly and are integrated with a safety interlock mechanism, ensuring a perfect balance between operator safety and ergonomic convenience.
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 Rotary Turret | Servo Rotary 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
Q What is the maximum swing over bed for the NXX-46B and NXX-46BL CNC lathe?
The NXX-46B has a maximum swing over bed of Φ480mm, while the NXX-46BL offers a slightly larger capacity of Φ500mm, making both models well-suited for machining medium-to-large diameter workpieces.
Q What type of spindle bearing configuration does the NXX-46B series use?
The NXX-46B series features a 'front-3-rear-2' layout of imported precision-grade bearings integrated into a cartridge spindle system. This configuration ensures exceptional machining accuracy, high structural rigidity, and superior speed stability for demanding heavy-duty cutting applications.
Q How fast is the tool change on the NXX-46B turret system?
The NXX-46B series turret system achieves a rapid tool-to-tool indexing time of just 0.3 seconds. The servo-driven rotary turret supports bi-directional logic indexing (shortest path tool selection) and can hold up to 12 tools, significantly improving production efficiency.
Q What are the rapid traverse speeds of the X and Z axes?
The X-axis achieves a rapid traverse rate of 24 m/min, while the Z-axis reaches up to 30 m/min. Both axes are driven by high-performance servo motors coupled to precision pre-tensioned ball screws, ensuring accurate positioning and minimal thermal deformation at high speeds.
Q What is the repeatability accuracy of the NXX-46B series?
Both the NXX-46B and NXX-46BL achieve a repeatability accuracy of ±0.0025mm on both the X-axis and Z-axis. The spindle radial and axial run-out is ≤0.003mm, and the spindle facing flatness accuracy is ≤0.01mm/Φ100mm, reflecting the machine's high-precision engineering.
Q What safety features are included in the NXX-46B CNC lathe?
The NXX-46B series is fully enclosed in a streamlined guarding system with superior waterproof sealing. The lightweight sliding doors are integrated with a safety interlock mechanism that prevents operation when the door is open, ensuring maximum operator safety while maintaining ergonomic convenience during daily use.