CJM250 Light Duty Precision Bench Lathe
The CJM250 series light metal lathe is a highly efficient and reliable equipment engineered for precision metalworking, toolmaking, and prototyping. Featuring a 250mm maximum swing over bed, this bench lathe is available in two center-distance models to suit various workpiece requirements: 500mm (CJM250/500) and 700mm (CJM250/700).
High-Precision CJM250 Light Metal Lathe (CJM250/500 & CJM250/700)
Product Overview
The CJM250 series light metal lathe is a highly efficient and reliable equipment engineered for precision metalworking, toolmaking, and prototyping. Featuring a 250mm maximum swing over bed, this bench lathe is available in two center-distance models to suit various workpiece requirements: 500mm (CJM250/500) and 700mm (CJM250/700).
Driven by a robust 750W motor and an all-gear headstock, the CJM250 delivers uncompromising rigidity and cutting accuracy across a wide range of speeds. With its heavy-duty double-V and double-flat guideway structure, it provides an exceptional solution for precise thread turning and everyday metal cutting operations.
Core Features & Technical Advantages
- All-Gear Drive Headstock & 12-Speed Adjustments: Unlike traditional belt-driven lathes, the headstock utilizes a full mechanical gear drive with an oil-bath circulation system. It supports 12 spindle speed steps ranging from 80 to 1600 rpm, ensuring powerful, lossless torque output at both low and high speeds.
- High-Rigidity Guideways: Built on a premium cast-iron bed with double-V and double-flat guideways (两山两矩). The bedways are precision-ground and hardened to achieve excellent vibration damping, structural rigidity, and long-term geometric accuracy.
- 12-Speed Variable Speed Gearbox for Threading: The integrated quick-change gearbox covers a comprehensive range of common thread pitches without frequent change-gear swaps. It easily cuts 18 Metric threads (0.25~5.0mm), 36 Imperial/Inch threads (4~96 T.P.I), 14 Modulus threads, and 24 Diametral Pitch threads.
- Dual-Direction Automatic Feed with Safety Interlock: Equipped with both longitudinal and cross automatic power feeds. The machine incorporates a specialized interlocking mechanism to prevent accidental simultaneous engagement, significantly enhancing operational safety.
- Quick-Locking Cam Tailstock: Features a fast and secure cam-lock mechanism on the tailstock, enabling rapid positioning and rigid clamping to reduce non-productive setup times during batch processing.
| Technical Parameter | CJM250/500 | CJM250/700 |
|---|---|---|
| Max. Swing Over Bed | 250 mm | 250 mm |
| Max. Distance Between Centers | 500 mm | 700 mm |
| Max. Swing Over Cross Slide | 150 mm | 150 mm |
| Spindle Bore Diameter | 26 mm | 26 mm |
| Spindle Taper | MT4 | MT4 |
| Max. Cross Travel of Tool Post | 170 mm | 170 mm |
| Max. Longitudinal Travel of Top Slide | 60 mm | 60 mm |
| Metric Thread Range / Types | 0.25–5.0 mm / 18 | 0.25–5.0 mm / 18 |
| Imperial Thread Range / Types | 4–96 TPI / 36 | 4–96 TPI / 36 |
| Module Thread Range / Types | 0.25–2.5 MP / 14 | 0.25–2.5 MP / 14 |
| Diametral Pitch Thread Range / Types | 9–96 DP / 24 | 9–96 DP / 24 |
| Longitudinal Feed Per Spindle Rev. | 0.035–0.375 mm/r | 0.035–0.375 mm/r |
| Cross Feed Per Spindle Rev. | 0.0175–0.188 mm/r | 0.0175–0.188 mm/r |
| Max. Tailstock Quill Travel | 60 mm | 60 mm |
| Tailstock Quill Taper | MT3 | MT3 |
| Number of Spindle Speeds | 12 steps | 12 steps |
| Spindle Speed Range | 80–1600 rpm | 80–1600 rpm |
| Motor Power | 750 W | 750 W |
| Net / Gross Weight | 160 kg / 180 kg | 185 kg / 208 kg |
| Machine Dimensions (L×W×H) | 1070×570×500 mm | 1270×570×500 mm |
| Packing Dimensions (L×W×H) | 1200×610×670 mm | 1400×610×670 mm |
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