30 January 2026
For workshop managers and training instructors, the trusted Colchester Student VS and Harrison V300 centre lathes are now available with a game-changing upgrade: built-in Constant Surface Speed (CSS) functionality for 2026. Variable Speed Colchester Student & Harrison V300 models benefit from this advanced feature, which automates spindle control to deliver superior surface finishes, longer tool life, and more consistent results, especially when turning complex diameters.
A common challenge in manual turning is maintaining the correct cutting speed. Without CSS, the spindle runs at a fixed speed. This means the actual surface speed of the workpiece changes with its diameter:
On a large diameter, the surface moves too fast past the tool, risking poor finish and tool damage.
On a small diameter, the surface moves too slowly, leading to inefficient cutting and built-up edge.
CSS solves this by automatically adjusting the spindle RPM. As you turn from a large diameter to a small one (e.g., when tapering or facing), the CSS function increases the spindle speed to maintain your pre-set, optimal surface speed (measured in meters per minute). This ensures:
A better, more consistent surface finish across the entire workpiece.
Improved tool life by maintaining ideal cutting conditions.
Increased efficiency and confidence for both students and professionals, as the machine handles complex speed calculations.
The CSS function enhances an already robust and reliable machine platform. The Colchester Student VS / Harrison V300 is built for the demands of training workshops and professional toolrooms.
Here are the core specifications that make it a standout choice:
| Feature | Specification |
|---|---|
| Swing Over Bed | 330 mm |
| Distance Between Centres | 635 mm or 1000 mm |
| Spindle Bore | 40 mm |
| Spindle Speed Range | 30 – 3000 rpm (in 3 steps) |
| Spindle Motor Power | 2.2 kW |
| New Feature for 2026 | Constant Surface Speed (CSS) Function |
The Colchester Student VS and Harrison V300 centre lathes provide a proven platform for high-quality turning in educational and professional workshops. With rigid construction and variable speed spindle control, they offer the precision, flexibility, and reliability needed for modern training and toolroom environments. It is worth noting that Variable Speed Colchester Student & Harrison V300 models are especially favoured for their adaptability. Also, they are well known for ease of use in these settings.
This upgrade is particularly valuable for two environments:
Educational & Training Facilities: CSS allows students to achieve professional-level results faster, building core understanding of machining principles while reducing scrap from incorrect speeds. It simplifies a complex aspect of the turning process.
Professional Toolrooms & Workshops: For one-off components, prototypes, or small batches, CSS eliminates manual speed adjustments, saving time and ensuring repeatable, high-quality finishes on every part.
The Variable Speed Colchester Student & Harrison V300 with CSS can be tailored to your specific application—whether dedicated to manufacturing, training, or a combination of both.
Do you have questions about how CSS can improve your workshop’s output? Our team has over 70 years of combined machine tool expertise and is ready to help.
👉 Get Specific Answers: Visit our comprehensive Machine Tool FAQ Section for detailed guides.
👉 Speak Directly to an Expert: Contact RK International today to discuss your requirements and configure the perfect lathe package.
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