Airtac SAIF Series Standard Cylinder with Valve SAIF80X250S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF80X250S-08B is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 250mm stroke and a built-in 4M310-08 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ80 mm
- Stroke250 mm
- Built-in valve4M310-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF80X250S-08B
The AirTAC SAIF80X250S-08B is a double-acting ISO 15552 profile cylinder with a built-in 4M310-08 5/2 solenoid valve, delivering a Cv of 1.40. It features a 80mm bore, 250mm stroke, and a carbon steel piston rod. Equipped with a magnet for CMSE reed and DMSE electronic sensors, it switches itself from one coil signal. Driven by a DC24V terminal entry coil drawing 3.0 W, it eliminates remote valve plumbing. The cylinder body rates to 1.0 MPa, but because the integrated valve operates at 0.15-0.8 MPa, the practical working range for the assembled SAIF unit is 0.15-0.8 MPa.
By default, the factory setting retracts the piston rod when the coil is energised. This can be reconfigured to extend-when-energised simply by repositioning the valve. The manifold connects to the cylinder via PU tubing (O10 x O6.5). Note that the valve port is 1/4 (code 08) while the cylinder port is 3/8. Generating 2513N of push force at 0.5 MPa, it is ideal for decentralized stations across large machines.
Airtac SAIF Series Standard Cylinder with Valve SAIF80X250S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF80X250S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø80 mm |
| Stroke | 250 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G3/8 |
| Rod thread | M20×1.5 |
| PU tube | Ø10 × Ø6.5 |
| Built-in valve | 4M310-08 (5/2) |
|---|---|
| Valve flow | 25.0 mm² (Cv 1.40) |
| Max frequency | 4 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 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 SAIF80X250S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 80×250 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M310-08. |
| 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 SAIF80X250S-08B Is Used
Decentralized Automation
Ideal for large factory machines where installing separate remote valves is impractical, saving panel space by integrating the 4M310 valve directly on the cylinder.
High-Force Clamping
Delivers 2513N of push force at 0.5 MPa for secure workholding and clamping stations, driven by a fast 0.05s DC24V coil response.
Space-Constrained Retrofitting
Perfect for machinery upgrades where running new valve tubing is costly, offering self-contained actuation with built-in CMSE/DMSE sensor tracking.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF80X250S-08B the Right Choice?
Choose this 80mm bore for high-force decentralized tasks; it delivers 2513N push and 2268N pull at 0.5 MPa. If your application needs less force, stepping down to a 63mm bore yields 1559N push at 0.5 MPa, whereas moving up to a 100mm bore provides 3927N. A self-valved SAIF beats a separate cylinder plus remote valve when panel space is tight and running tubing is costly. The 4M310 valve max frequency is 4 cycles/sec. For load-holding, note the 5/2 valve routes air but is not a lock; consider SAIL or BSAI for clamp-lock needs. At 250mm stroke, ensure adequate guide support to prevent rod side-loading.
When ordering a replacement, match the 80mm bore, 250mm stroke, 1/4 valve port, 3/8 cylinder port, DC24V voltage, terminal entry, PT thread, and -S magnet. The valve holds position by pilot pressure, not a spring.
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 SAIF80X250S-08B FAQ
The 80mm bore cylinder provides 2513N push and 2268N pull force at 0.5 MPa. The built-in 4M310-08 5/2 solenoid valve has an effective area of 25.0 mm2 (Cv 1.40).
The built-in 4M310 valve allows the cylinder to control itself from one DC24V coil signal, saving plumbing and panel space. Factory-set to retract when energised, the valve can be repositioned to extend-when-energised.
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