| Customization: | Available |
|---|---|
| Type: | Horizontal Lathe |
| Processing Accessory: | Conventional Lathe |
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Heavy-duty Lathe
The defining features of Spark Heavy-Duty Lathes are centered around their ability to maintain precision under significant load and while machining large dimensions.
Exceptional Structural Rigidity and Bed Design:
The foundation of any heavy-duty lathe is its bed. Spark lathes typically feature a heavily ribbed, cast iron bed manufactured from high-grade Mechanite or similar material. This design provides superior vibration damping, thermal stability, and resistance to torsion and bending forces.
The bed is often a hardened and ground guideway, ensuring long-term accuracy and wear resistance. Some models incorporate dual guideways for the tailstock and carriage, enhancing stability during heavy cuts.
High Power and Torque:
Equipped with a powerful main drive motor (often ranging from 40 HP to over 100 HP), these lathes provide the necessary torque for deep cuts and high metal removal rates (MRR) on tough materials like hardened steel, forgings, and high-grade alloys.
The main transmission system is built for reliability, frequently using a gear-driven headstock with multiple speed ranges to deliver consistent power at various spindle speeds.
Large Swing and Bed Length:
A key specification is the "swing over bed," which denotes the maximum diameter of workpiece that can be rotated over the lathe bed. Spark Heavy-Duty Lathes offer substantial swings, often exceeding 1000 mm (40 inches) and going up to several meters for custom models.
They are available in various center distances (e.g., 3000mm, 5000mm, 8000mm, or more) to accommodate long workpieces like turbine shafts, rolls, and long pipes.
Precision and Accuracy:
Despite their size and power, precision is paramount. These lathes are designed to maintain tight tolerances (often within microns on diameter) and fine surface finishes.
Features contributing to this include:
Precision Spindle: A large-diameter, high-capacity spindle mounted on pre-loaded tapered roller or hydrodynamic bearings for minimal runout and high radial/axial stiffness.
Robust Carriage and Saddle: A wide-based saddle and large cross-slide minimize deflection under load. The apron often contains a dual-rack and pinion drive for smooth, powerful longitudinal feed.
Advanced Control Systems: Modern Spark lathes are typically equipped with sophisticated CNC systems (e.g., Siemens, Fanuc). These systems allow for complex contouring, threading, and repetitive machining with high accuracy. They also enable functions like constant surface speed control.
| Item | C61160/180/200/220 | C61180/200/220/250 | CW61160/180/200/220 |
| Swing over bed | 1600/1800/2000/2200mm | 1800/2000/2200/2500mm | 1600/1800/2000/2200mm |
| Swing over carriage | 1250/1400/1600/1800mm | 1400/1600/1800/2200mm | 1250/1400/1600/1800mm |
| Max. Turning length | 4000~20000mm | 5000~15000mm | 4000~20000mm |
| Max. Loading between centers | 25/32/45T | 63T | 32/45T |
| Bed width | 1600(3-guideway) | 2050(3-guideway) | 1600(3-guideway) |
| Spindle speed | 0.8~160rpm | 0.4~100rpm | 0.8~160rpm |
| Spindle motor | 75/90kW | 110kW | 75kW |
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