China NXX-46B CNC Lathe with Rotary Turret - High Precision Supplier & Factory for Efficient Machining Solutions
Machine Structural Features
◆
Dedicated to the high-performance CNC machining sector, we proudly introduce this precision machine tool 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.
◆
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.
◆
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.
◆
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 difference between the NXX-46B and NXX-46BL models?
The NXX-46BL is an extended-capacity variant. Key differences include a larger Max. Swing Over Bed (Φ500 vs Φ480), greater Max. Machining Length (360mm vs 320mm), a larger Max. Swing Over Turret Carriage (Φ220 vs Φ125), and a higher X/Z Axis Servo Motor Power (1.8Kw vs 1.3Kw). The NXX-46BL is better suited for machining larger disk-type and shaft-type components.
Q
What type of spindle bearing configuration does the NXX-46B series use?
The NXX-46B series uses an integrated cartridge spindle system with a 'front-3-rear-2' layout of imported precision-grade bearings. Combined with a direct-drive spindle servo motor, this configuration ensures exceptional machining accuracy, structural rigidity, and superior speed stability up to 4,000 r/min.
Q
How fast is the tool-change speed on the NXX-46B series?
The NXX-46B series features an extremely fast tool-change time of only 0.3 seconds (tool-to-tool indexing time). The servo rotary turret supports bi-directional logic indexing (shortest path tool selection), accommodating up to 12 tools, significantly reducing non-cutting time and improving overall productivity.
Q
What is the repeatability accuracy of the X and Z axes?
Both the X-axis and Z-axis achieve a repeatability accuracy of ±0.0025mm on both the NXX-46B and NXX-46BL models. This high precision is achieved through the combination of precision pre-tensioned ball screws, high-rigidity linear guideways, and an automatic forced lubrication system.
Q
What are the advantages of the 30° slant bed design?
The 30° slant bed architecture, cast from premium-grade cast iron using a resin-sand molding process with a dense internal reinforcement rib layout, provides outstanding overall rigidity and vibration damping. It also improves chip evacuation efficiency and enhances ergonomic accessibility for operators, making it ideal for heavy-duty and high-precision turning operations.
Q
Is the hydraulic system on the NXX-46B series reliable for continuous production?
Yes. The hydraulic system incorporates Taiwanese-branded variable displacement pumps, hydraulic motors, and solenoid valves, integrated with an independent air-cooling unit. This design ensures low-noise operation and stable oil temperature control, making it highly reliable for continuous, high-intensity production environments.