Airtac SAIF Series Standard Cylinder with Valve SAIF63X250S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF63X250S-08B is a genuine double-acting ISO 15552 cylinder with a Ø63mm 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.
- BoreØ63 mm
- Stroke250 mm
- Built-in valve4M310-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF63X250S-08B
The AirTAC SAIF63X250S-08B is a double-acting ISO 15552 profile cylinder with a built-in 4M310-08 5/2 solenoid valve, delivering a 25.0 mm2 effective area (Cv 1.40). Driven by a DC24V terminal entry coil drawing 3.0 W, it responds in 0.05 s and carries an IP65 rating. Although the cylinder body rates to 1.0 MPa, the integrated valve limits the practical working range to 0.15-0.8 MPa. At 0.5 MPa it generates 1559 N push and 1402 N pull force.
This unit switches itself from one coil signal, eliminating remote plumbing and saving panel space for decentralized stations. The manifold connects via O10 x O6.5 PU tubing, and the valve port (1/4") differs from the cylinder port (3/8"). Factory-set to retract when energised, the valve can be repositioned to extend on signal. The -S magnet supports CMSE reed and DMSE electronic sensors for position feedback.
Airtac SAIF Series Standard Cylinder with Valve SAIF63X250S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF63X250S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø63 mm |
| Stroke | 250 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G3/8 |
| Rod thread | M16×1.5 |
| 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 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 SAIF63X250S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 63×250 | 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 SAIF63X250S-08B Is Used
Decentralized Stations
Ideal for large machines with multiple actuation points, eliminating long tubing runs by switching locally via the integrated 4M310 valve.
Mid-Force Clamping
Provides 1559 N of push force at 0.5 MPa for holding medium-weight workpieces during machining or assembly processes.
Compact Retrofitting
Fits into existing ISO 15552 footprints where adding a separate external valve bank is physically or economically unfeasible.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF63X250S-08B the Right Choice?
Choose this 63 mm bore if you need more thrust than the 50 mm class (982 N push at 0.5 MPa) but want a smaller envelope than the 80 mm class (2513 N push). The self-valved SAIF architecture beats a separate cylinder and remote valve when installation space is tight and running tubing across a large machine is costly. A DC24V terminal coil suits low-voltage control panels, while the PT threaded ports match standard Asian pneumatic fittings.
This assembly provides air routing, not load holding; the 5/2 valve will not mechanically lock the rod, so use a SAIL lock cylinder if you need to hold position without live pressure. At 250 mm stroke, ensure adequate guide support to prevent side-load wear on the rod seals. To replace this unit, match the 63 mm bore, 250 mm stroke, 1/4" valve port, DC24V terminal coil, PT thread, and -S magnet.
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 SAIF63X250S-08B FAQ
The built-in 4M310-08 valve has a 25.0 mm2 effective area (Cv 1.40). The 63 mm bore cylinder generates 1559 N push and 1402 N pull force at 0.5 MPa, with a maximum operating pressure of 0.8 MPa.
Yes. The factory setting retracts the rod when the DC24V coil is energised, but you can reposition the valve to extend-when-energised. This self-contained 5/2 valve means no separate remote valve is needed.
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