Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08A 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"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08A
The AirTAC SAIF50X225-08A is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. This built-in valve provides a Cv of 0.89 and routes air directly through a manifold block using O8 x O5 PU tubing, eliminating the need for separate remote valves and extensive plumbing. Driven by an AC220V terminal entry coil drawing 3.5 VA, it activates in 0.05 s. While the cylinder body rates to 1.0 MPa, the practical operating range for this valved assembly is 0.15-0.8 MPa.
In its factory setting, the piston rod retracts when the coil is energised, but you can reconfigure it to extend-when-energised simply by repositioning the valve. The 50mm bore generates 982N of push force at 0.5 MPa, making it robust enough for decentralized actuation across large machines. It features adjustable air cushions at both ends and a standard carbon steel piston rod, though it lacks a magnet for proximity sensing.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08A |
|---|---|
| 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 | 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 SAIF50X225-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×225 | 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 SAIF50X225-08A Is Used
Decentralized Assembly Stations
Ideal for large factory layouts where installing a central valve bank is impractical, allowing each station to control its own actuation locally.
Space-Constrained Machinery
The integrated manifold block saves panel space and cuts down on external tubing, fitting neatly into compact automated frames.
Retrofit Automation Upgrades
Perfect for adding linear motion to existing lines without the cost and labor of routing new pneumatic valve lines across a machine.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X225-08A the Right Choice?
Choose this 50mm bore when your application requires around 982N of push force at 0.5 MPa; stepping down to a 40mm bore drops that force to 628N, while an 80mm bore jumps to 2513N. The self-valved SAIF50X225-08A is ideal for space-tight machines or retrofits where running valve tubing is costly, as it switches itself from a single AC220V terminal connection. The 5/2 valve holds its position via internal pilot pressure, but it does not lock the load mechanically—use a SAIL lock cylinder if you need true position holding.
When ordering a replacement, verify the 50mm bore, 225mm stroke, 1/4" cylinder port, 4M210-08 valve port, AC220V voltage, PT thread, and terminal entry. Because the 225mm stroke is over 300mm, ensure you provide adequate guide support to prevent excessive side-loading on the rod.
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 SAIF50X225-08A FAQ
The 50mm bore generates 982N of push force at 0.5 MPa and 1374N at 0.7 MPa. Although the cylinder body rates to 1.0 MPa, the built-in 4M210-08 valve limits the practical operating pressure range to 0.15-0.8 MPa.
Yes. By default, the factory setting retracts the rod when the AC220V coil is energised, but you can reposition the 5/2 valve on the manifold to make it extend-when-energised. This decentralized setup requires no separate remote valve.
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