Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08B 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 SAIF50X225-08B
The AirTAC SAIF50X225-08B is a double-acting ISO 15552 profile cylinder that integrates a 4M210-08 5/2 solenoid valve directly onto its manifold. Driven by a DC24V terminal coil drawing 3.0 W with an IP65 rating, it eliminates the need for a remote valve island. The built-in valve features a 16.0 mm2 orifice (Cv 0.89) and switches up to 5 cycles per second. While the bare cylinder body is rated for 1.0 MPa, the practical operating pressure for this valved assembly is 0.15-0.8 MPa.
From the factory, the piston rod retracts when the coil is energised, but you can reposition the valve to extend-when-energised if your sequence requires it. The manifold links the valve to the cylinder using O8 x O5 PU tubing, and the 1/4" valve port is distinct from the cylinder's own 1/4" port. Delivering 982 N of push force at 0.5 MPa, it provides decentralized control without extra plumbing.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08B |
|---|---|
| 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 SAIF50X225-08B
| 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 SAIF50X225-08B Is Used
Decentralized Stations
Ideal for large machines where running individual valve tubing back to a main panel is costly, letting this cylinder switch itself via a single DC24V signal.
Space-Tight Machines
The integrated 4M210-08 valve manifold saves valuable panel space and reduces overall plumbing complexity in compact assembly equipment.
Material Handling
Provides reliable 982 N push force at 0.5 MPa for diverting or lifting products, responding in under 0.05 s for fast throughput.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08B the Right Choice?
Choose this 50 mm bore when you need more thrust than a 40 mm bore (628 N push at 0.5 MPa) but want a smaller footprint than a 63 mm bore (1559 N). The 225 mm stroke falls well within the 1200 mm standard limit, but at this length you should ensure adequate guide support to prevent side-loading and premature seal wear. The integrated DC24V terminal coil keeps wiring simple for localized machine stations.
Because the 5/2 valve only routes air, it cannot hold a load mechanically without live pressure; for positive locking, consider the SAIL series. To replace this unit, match the 50 mm bore, 225 mm stroke, 1/4" valve port, DC24V voltage, terminal electrical entry, PT thread, and standard carbon steel rod. Note that position sensing requires adding a magnet (-S) to work with AirTAC CMSE reed or DMSE electronic sensors.
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 SAIF50X225-08B FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. The practical pressure range is 0.15-0.8 MPa due to the integrated valve limits.
No, the integrated 4M210-08 5/2 valve is internally piloted and switches the cylinder directly from the DC24V coil signal. By default, it retracts the rod when energised, but it can be reconfigured to extend when energised.
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