Airtac SAIF Series Standard Cylinder with Valve SAIF50X225S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X225S-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 225mm 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
- Stroke225 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X225S-08B
The AirTAC SAIF50X225S-08B is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. This specific SKU is configured with a DC24V terminal coil that draws just 3.0 W, an IP65 rating, and a 0.05 s response time. The built-in valve provides an effective flow area of 16.0 mm2 (Cv 0.89) and connects to the cylinder via a short PU tube (O8 x O5). Because the manifold mounts the valve directly, you drive the actuator from a single electrical signal without routing remote pneumatic lines.
The 50 mm bore generates 982 N of push force and 825 N of pull force at 0.5 MPa. While the cylinder body rates to 1.0 MPa, the practical operating range is 0.15-0.8 MPa due to the valve limits. This unit includes a magnet (-S) for CMSE reed and DMSE electronic sensors. Factory-set to retract when energised, the valve can be repositioned to extend on signal. The cylinder speed operates between 30-800 mm/s.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X225S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X225S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 225 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 | 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 (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 SAIF50X225S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×225 | 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 SAIF50X225S-08B Is Used
Decentralized Stations
Eliminates the need for a remote valve island on large machines by switching directly at the cylinder, saving panel space and pneumatic tubing.
Compact Assembly Lines
Provides 982 N of push force in tight cells where bringing in separate valve plumbing would clutter the work area and slow maintenance.
Retrofit Automation
Easily upgrades existing ISO 15552 fixtures by adding self-contained DC24V control without re-engineering the central pneumatic manifold.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X225S-08B the Right Choice?
Choose this 50 mm bore when an application requires around 982 N of thrust at 0.5 MPa; step down to a 40 mm bore (628 N push) for lighter loads, or up to a 63 mm bore (1559 N push) if higher force is needed. The SAIF50X225S-08B is ideal for decentralized stations where running pneumatic tubing to a remote valve is costly or space-prohibitive. It specifies a DC24V terminal electrical entry, a PT1/4 cylinder port, and a PT tapered thread type. The standard carbon steel rod suits general industrial environments.
When replacing this unit, match the 50 mm bore, 225 mm stroke, 4M210-08 valve port, DC24V voltage, terminal entry, and the -S magnet. The 225 mm stroke is under the 1200 mm standard maximum, but you should always verify guide alignment to prevent excessive side-loading on the rod. Note that the 5/2 valve routes air but does not lock the load; for position holding, consider an SAIL lock cylinder.
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 SAIF50X225S-08B FAQ
At 0.5 MPa, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. The integrated 4M210-08 5/2 valve has a 16.0 mm2 orifice with a Cv of 0.89.
No, it has a built-in 4M210 valve driven by a DC24V terminal coil. By factory default, the piston rod retracts when the coil is energised, but you can reposition the valve to extend-when-energised. It holds position pneumatically via pilot pressure, not mechanically.
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