Airtac SAIF Series Standard Cylinder with Valve SAIF50X125-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X125-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 125mm 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
- Stroke125 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X125-08B
The AirTAC SAIF50X125-08B is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. Driven by a DC24V terminal coil drawing 3.0 W with an IP65 rating, it delivers a 0.89 Cv flow and responds in 0.05 s. The cylinder body features a PT1/4 port and carbon steel piston rod, delivering 982 N of push force at 0.5 MPa. Although the cylinder body rates to 1.0 MPa, the practical operating range is 0.15-0.8 MPa due to the valve limits.
By default, the piston rod retracts when the coil is energised, but this can be reconfigured to extend-when-energised simply by repositioning the valve. The manifold connects to the barrel using O8 x O5 PU tubing, meaning the 1/4" valve port differs from the cylinder port. This self-switching design eliminates remote valves, saving panel space and tubing for decentralized machine stations.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X125-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X125-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 125 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 SAIF50X125-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×125 | 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 SAIF50X125-08B Is Used
Decentralized Assembly Lines
Eliminates the need for a central valve manifold on large machines by switching locally via a DC24V signal, drastically reducing tubing complexity.
Compact Clamping Stations
Provides 982 N of clamping force at 0.5 MPa in space-tight cells where mounting a separate valve and cylinder pair is physically impossible.
Retrofit Automation Upgrades
Ideal for upgrading existing ISO 15552 fixtures where running new pneumatic lines is difficult, requiring only a single electrical connection.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X125-08B the Right Choice?
Choose this 50 mm bore when you need 982 N push force at 0.5 MPa; step down to a 40 mm bore for 628 N, or up to a 63 mm bore for 1559 N if your payload requires more thrust. The self-contained SAIF50X125-08B excels in decentralized installations where routing air lines to a remote valve is costly, as it switches itself from a single DC24V terminal signal. It operates at 30-800 mm/s.
Remember that the built-in 5/2 valve routes air but does not lock the load mechanically; for position holding under zero pressure, consider a SAIL lock cylinder. When ordering a replacement, match the 50 mm bore, 125 mm stroke, 1/4" valve port, DC24V voltage, terminal entry, PT thread, and standard carbon steel rod. No magnet is specified, so CMSE or DMSE sensors cannot be fitted without the -S option.
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 SAIF50X125-08B 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 valve provides a 16.0 mm2 effective area (Cv 0.89) with a maximum frequency of 5 cycles per second.
No, the built-in 4M210-08 5/2 valve switches the cylinder directly from the DC24V terminal coil. Factory-set to retract when energised, the valve can be repositioned to extend-when-energised. It operates within 0.15-0.8 MPa.
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