Airtac SAIF Series Standard Cylinder with Valve SAIF40X50S-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X50S-08A is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 50mm 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
- Stroke50 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X50S-08A
The AirTAC SAIF40X50S-08A is a double-acting ISO 15552 profile cylinder featuring a built-in 4M210-08 5/2 solenoid valve. Driven by an AC220V terminal coil, it delivers 879N of push force at 0.7MPa. The integrated valve provides a 16.0mm2 effective area (Cv 0.89) and switches up to 5 cycles per second. Because the cylinder body rates to 1.0MPa but the internal valve operates at 0.15-0.8MPa, the practical working range for this assembled unit is 0.15-0.8MPa.
This model includes a magnet for CMSE reed and DMSE electronic sensors. It eliminates remote plumbing by using an O8xO5 PU tube between the manifold and cylinder. The factory setting retracts the rod when the coil is energised, but you can reposition the valve to extend-when-energised. One coil signal controls the entire actuator, making it ideal for decentralized machine stations.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X50S-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X50S-08A |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 50 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 | AC220V · AC 3.5 VA |
| 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 SAIF40X50S-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×50 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| A | Coil voltage AC220V. |
| 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 SAIF40X50S-08A Is Used
Decentralized Assembly Stations
Eliminates the need for a remote valve island on large machines, driving the 40mm bore directly from a single AC220V terminal coil signal.
Space-Constrained Automation
The built-in 4M210-08 valve manifold saves panel space and reduces external tubing, fitting easily into tight machine envelopes.
Retrofit and Upgrades
Ideal for upgrading existing pneumatic setups where routing new air lines to a central manifold is impractical, offering direct local control.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X50S-08A the Right Choice?
Choose this 40mm bore when you need more force than the 32mm version (563N push at 0.7MPa) but want a smaller footprint than the 50mm class (1374N). The self-valved SAIF40X50S-08A excels in space-tight machines where running separate valve tubing is costly, as the AC220V terminal coil wires directly to the actuator. The cylinder uses PT1/4 ports, while the valve features a 1/4" port. Note that the 5/2 valve routes air and is not a lock; if your application requires load-holding without live pressure, consider the SAIL lock cylinder instead. For exact replacement matching, verify the 50mm stroke, 4M210-08 valve, AC220V 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 SAIF40X50S-08A FAQ
At 0.7MPa, this 40mm bore cylinder generates 879N of push force and 528N of pull force. The integrated 4M210-08 5/2 valve has an effective area of 16.0mm2 (Cv 0.89) and supports a maximum frequency of 5 cycles per second.
No separate remote valve is needed; the 4M210 valve is mounted directly on the cylinder and driven by the AC220V coil. By factory default, the piston rod retracts when the coil is energised, but this can be reconfigured to extend-when-energised by repositioning the valve.
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