Airtac SAIF Series Standard Cylinder with Valve SAIF50X400S-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X400S-08A is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 400mm 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.
- BoreØ50 mm
- Stroke400 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X400S-08A
The AirTAC SAIF50X400S-08A is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. This built-in valve delivers a Cv of 0.89 and operates at up to 5 cycles per second, directly mounting to the cylinder via a manifold block and O8 x O5 PU tubing. Equipped with a carbon steel rod and an -S magnet for CMSE reed and DMSE electronic sensors, it provides 982N of push force at 0.5 MPa. The AC220V terminal coil consumes 3.5 VA, features IP65 protection, and activates in 0.05 seconds or less.
Because the cylinder body rates to 1.0 MPa but the internal piloted 5/2 valve limits pressure to 0.15-0.8 MPa, the practical working range for this assembled unit is 0.15-0.8 MPa. By default, the factory setting retracts the piston rod when the coil is energised, though you can reposition the valve to extend-when-energised. This self-contained design eliminates remote valves and extra plumbing, making it highly effective for decentralized installations across large machines.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X400S-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X400S-08A |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 400 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 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 SAIF50X400S-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×400 | 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 SAIF50X400S-08A Is Used
Decentralized Automation Stations
Ideal for distributing actuation across large machines, minimizing tubing runs and panel space by self-switching from a single AC220V signal.
Extended Stroke Handling
The 400mm stroke suits material transfer and part ejection, provided external guides support the load to prevent rod side-loading.
Retrofit Machine Upgrades
Simplifies machine updates by removing the need to plumb a remote valve, using the integrated 4M210-08 manifold block for direct control.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X400S-08A the Right Choice?
Choose this 50mm bore when you need robust thrust around 982N at 0.5 MPa; stepping down to a 40mm bore drops push force to 628N, while upgrading to a 63mm bore yields 1559N. The self-valved SAIF architecture beats a separate cylinder and remote valve when panel space is tight and running tubing is costly, as it switches directly from one AC220V terminal coil signal. For replacement, match the 50mm bore, 400mm stroke, 1/4" valve port, PT1/4" cylinder port, AC220V voltage, terminal entry, and -S magnet. Because the 400mm stroke exceeds 300mm, ensure you use appropriate guide rails to prevent excessive side loading on the rod. Note that the 5/2 valve routes air and cannot hold a load without live pressure; for true mechanical locking, consider the SAIL series instead.
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 SAIF50X400S-08A FAQ
The 50mm bore cylinder provides 982N push and 825N pull force at 0.5 MPa. The integrated 4M210-08 5/2 valve has a 16.0mm2 orifice with a Cv of 0.89, supporting speeds of 30-800 mm/s.
Yes, the factory setting retracts the rod when the AC220V coil is energised, but you can reconfigure it to extend-when-energised by repositioning the 5/2 valve. This eliminates the need for a separate remote valve.
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