6840 17″ Ball Screw Benchtop Lathe vs 8400A 8" CNC Tabletop Lathe System Package A (LinuxCNC)
Technical comparison · Turning (lathe)
| Parameter |
6840 17″ Ball Screw Benchtop Lathe
Sherline
F2 · Intermediate
|
8400A 8" CNC Tabletop Lathe System Package A (LinuxCNC)
Sherline
F2 · Intermediate
|
|---|---|---|
| Identity | ||
| Launch year | 2020 | — |
| Use tier | F2 — Intermediate | F2 — Intermediate |
| Price | ||
| Price (€) | ~1400–2000 € | ~2800–3400 € |
| Universal specs | ||
| Dimensions (W×D×H) (cm) | 26.35 × ? × 25.4 cm | 26.7 × 59.7 × 21.6 cm |
| Weight (kg) | 21.4 kg | 28.6 kg |
| Work area (mm) | 430 × 116 mm | 200 × 110 mm |
| Z-axis height (mm) | 367 mm | — |
| Voltage (V) | 240 V | 240 V |
| Maximum speed | 2800 rpm | 2800 rpm |
| Declared precision | 0.05 mm | 0.0127 mm |
| Category specs | ||
| Swing over bed (mm) | 151 mm | 90 mm |
| Distance between centers (mm) | 430 mm | 200 mm |
| Ecosystem | ||
| Cloud dependency | No | No |
| Software notes | The 6840 is a CNC-ready machine: no controller is included in the base configuration. Buyers may choose from a 4-axis Linux driver box (with LinuxCNC), the Sherline/Acorn controller (based on Centroid CNC12, which supports Intercon conversational CAM), or any third-party controller compatible with NEMA 23 stepper motors. The MASSO G3 Touch is not available as an option on this model and is exclusive to the Accu-Pro line. G-code programs can be generated on any operating system using third-party CAM software. | The system includes an Ubuntu Linux computer with LinuxCNC preinstalled for 4-axis control, with the driver board and power supply already fitted. The tailstock spindle remains manually controlled. Utilities to convert CAD files or TrueType fonts into G-code are included; only a monitor must be supplied. |
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