Festo EG-PK Miniature Round Cylinder — Ultra-Compact Pneumatic Actuator (11 Models) Specs & Selection Guide
2026-06-14
The Festo EG-PK Series Miniature Round Cylinder is an ultra-compact pneumatic actuator specifically designed for micro-scale equipment with extremely limited installation space. Featuring push-in sleeve connectors (PK series quick-connect for plastic tubing), it enables fast connection to standard internal-diameter plastic tubing without additional fittings. The EG-PK series offers three miniature piston diameters — 2.5mm, 4mm, and 6mm — with stroke ranges from 5mm to 25mm, making it the ideal drive element for precision instruments, micro-grippers, and laboratory automation equipment.
Key Features & Highlights
- Ultra-Miniature Design: Smallest piston diameter just 2.5mm for extremely compact installation spaces
- Push-In Sleeve Connector (PK): Direct connection to standard internal-diameter plastic tubing without additional fittings
- Lightweight: Minimal size and weight ideal for moving components and micro-mechanisms
- 3 Bore Sizes: 2.5 / 4 / 6 mm miniature piston diameters
- Multiple Stroke Options: 5–25mm stroke range for diverse micro-stroke requirements
Technical Specifications
| Parameter | Specification |
|---|---|
| Series | EG-PK |
| Type | Miniature Round Cylinder (Single/Double-Acting) |
| Piston Diameter | 2.5 / 4 / 6 mm |
| Stroke Range | 5 – 25 mm |
| Connection Type | PK Push-In Sleeve Connector (plastic tubing quick-connect) |
| Position Sensing | Not supported |
| Operating Medium | Compressed air |
Complete EG-PK Series Model List
The following table lists all 11 standard models in the FESTO EG-PK series:
| Order Code | Part Number | Piston Diameter (mm) | Stroke (mm) | Connection |
|---|---|---|---|---|
| EG-2,5-5-PK-2 | 15883 | 2.5 | 5 | PK-2 |
| EG-2,5-10-PK-2 | 15884 | 2.5 | 10 | PK-2 |
| EG-4-5-PK-2 | 15885 | 4.0 | 5 | PK-2 |
| EG-4-10-PK-2 | 15886 | 4.0 | 10 | PK-2 |
| EG-4-15-PK-2 | 15887 | 4.0 | 15 | PK-2 |
| EG-4-20-PK-2 | 15888 | 4.0 | 20 | PK-2 |
| EG-6-5-PK-3 | 15891 | 6.0 | 5 | PK-3 |
| EG-6-10-PK-3 | 15892 | 6.0 | 10 | PK-3 |
| EG-6-15-PK-3 | 15893 | 6.0 | 15 | PK-3 |
| EG-6-20-PK-3 | 15894 | 6.0 | 20 | PK-3 |
| EG-6-25-PK-3 | 15895 | 6.0 | 25 | PK-3 |
Application Industries
- Precision Instrument Manufacturing: Micro-cylinders for micro-motion control in optical instruments and measuring equipment
- Laboratory Automation: Precision operations such as pipetting, sampling, and microfluidics
- Micro-Grippers: Drive elements for small grippers and handling mechanisms
- Electronics Assembly: Clamping and positioning of miniature components
Related Series
- ESNU Series: Single-acting round cylinder, ISO 6432 standard
- DSNU Series: Double-acting round cylinder for broader applications
Frequently Asked Questions
Q: Does the EG-PK series support position sensing?
A: No, the EG-PK series is a miniature cylinder without position sensor interfaces and does not support position detection. For applications requiring position feedback, consider standard round cylinders such as the ESNU or DSNU series.
Q: How does the PK connector work on EG-PK cylinders?
A: The PK connector is a push-in sleeve quick-connect design — simply insert the corresponding standard internal-diameter plastic tubing (PK-2 for 2mm ID tubing, PK-3 for 3mm ID tubing). No additional fittings or tools are required, making installation extremely simple.
Request EG-PK Series Quote & Technical Support →
Disclaimer: Product images and some technical specifications on this page are sourced from the official Festo website. All trademarks are the property of their respective owners.