A Sliding Head ER Spindle is a high-precision spindle unit designed for sliding headstock (Swiss-type) CNC lathes. It is used to hold ER collets for accurate, rigid, and high-speed clamping of cutting tools during turning, drilling, milling, and cross-working operations.
This spindle plays a critical role in achieving micron-level accuracy, excellent surface finish, and stable machining—especially for long, slender, and small-diameter components.
Applications
Sliding Head ER Spindles are widely used in:
- Swiss-Type CNC Lathes (Sliding Headstock)
- Micro & Precision Turning Operations
- Cross drilling, milling & tapping
- Medical, watch & electronics components
- Automotive precision parts
- High-speed, high-volume production
Key Features
- ✔ Compatible with ER collets (ER11 / ER16 / ER20 / ER25 / ER32)
- ✔ High concentricity & low runout
- ✔ Rigid spindle body for vibration-free machining
- ✔ Suitable for high RPM operations
- ✔ Precision bearings for long service life
- ✔ Smooth tool clamping & repeatability
- ✔ Compact design ideal for sliding head machines
- ✔ Custom spindle interfaces available
Technical Specifications
- Spindle Type: ER Collet Spindle
- Application: Sliding Head / Swiss CNC
- Collet Standard: ER Series
- Runout Accuracy: ≤ 0.003 – 0.01 mm
- Bearing Type: Precision Angular Contact Bearings
- Speed Capability: High-speed (machine dependent)
- Material: High-strength alloy steel
- Mounting: Flange / Cartridge / Custom
- Customization: As per machine model
Advantages
- Ensures precise tool alignment
- Improves surface finish & dimensional accuracy
- Reduces vibration and tool wear
- Enables high-speed & micro machining
- Ideal for continuous production
