Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08B is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 300mm stroke and a built-in 4M210-08 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ40 mm
- Stroke300 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08B
The AirTAC SAIF40X300S-08B is a double-acting profile cylinder with a built-in 4M210-08 5/2 solenoid valve, delivering a 16.0mm2 effective area (Cv 0.89) for direct actuation. It features a PT1/4 cylinder port, while the valve manifold connects via an O8xO5 PU tube. Equipped with a carbon steel rod and a magnet for CMSE reed and DMSE electronic sensors, it operates on a DC24V terminal coil drawing 3.0W with IP65 protection and a 0.05s response time.
Because the integrated valve operates at 0.15-0.8 MPa, the practical working range for this assembled unit is 0.15-0.8 MPa, even though the bare cylinder rates to 1.0 MPa. By default, the piston rod retracts when the coil is energised, but you can reposition the valve to extend-when-energised. This decentralized design requires no remote valve, cutting down on tubing and panel space while delivering 628N of push force at 0.5 MPa.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| PU tube | Ø8 × Ø5 |
| Built-in valve | 4M210-08 (5/2) |
|---|---|
| Valve flow | 16.0 mm² (Cv 0.89) |
| Max frequency | 5 cycle/sec |
| Coil voltage | DC24V · DC 3.0 W |
| Electrical entry | Terminal · IP65 · B class |
| Response time | 0.05 s and below |
| Operating pressure | 0.15 – 0.8 MPa (valve limit) |
| Speed range | 30 – 800 mm/s |
The cylinder rates to 1.0 MPa but the built-in valve operates 0.15–0.8 MPa, so run the assembled SAIF at 0.15–0.8 MPa. Default: rod retracts when the coil is energised (reconfigurable to extend). Specs follow the official AirTAC SAIF datasheet. Port options: PT / G.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
Sized within the valve's 0.15–0.8 MPa range. Actual usable force is lower than theoretical due to friction and back-pressure.
Model Code: Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×300 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| B | Coil voltage DC24V. |
| I / (blank) | Terminal electrical entry. |
SAIF does not hold its load without air — the valve routes air, it is not a lock. For load-holding use a SAIL (lock) or BSAI (clamp-lock).
Where the Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08B Is Used
Decentralized Automation
Ideal for large machines with multiple stations, using a single DC24V signal to drive the cylinder directly without routing long valve tubing back to a central panel.
Space-Constrained Machinery
The integrated 4M210 valve manifold saves valuable panel and footprint space, perfect for compact assemblies where external plumbing is impractical.
Pneumatic Retrofits
Simplifies upgrades on existing lines by embedding the 5/2 valve right on the cylinder, reducing the need to add new valve islands or complex air circuits.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08B the Right Choice?
Choose this self-valved SAIF40X300S-08B when you need to eliminate separate remote valves and minimize plumbing across decentralized machine stations. If your application requires less force, the 32mm bore offers 402N push at 0.5 MPa; if you need more power, stepping up to the 50mm bore yields 982N. For this 300mm stroke, ensure adequate side-load guidance to prevent rod binding, as the air cushion only decelerates near stroke end and cannot hold a load. Replacement requires matching the 40mm bore, 300mm stroke, 08 valve port, DC24V voltage, terminal entry, PT thread, and -S magnet.
Quick checklist
- ✓ Force at 0.15–0.8 MPa
- ✓ Coil voltage matches panel
- ✓ Terminal vs grommet entry
- ✓ Retract- or extend-when-energised
- ✓ Load-holding → SAIL / BSAI
Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08B FAQ
The 40mm bore generates 628N push and 528N pull force at 0.5 MPa. The built-in 4M210-08 valve provides an effective area of 16.0mm2 (Cv 0.89) with a maximum frequency of 5 cycles per second.
No, the 5/2 valve routes air but does not lock the load; for position holding you need a SAIL lock cylinder. By default, the factory setting retracts the rod when the DC24V coil is energised, but it can be reconfigured to extend-when-energised by repositioning the valve.
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