Airtac SAIF Series Standard Cylinder with Valve SAIF50X300-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X300-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 300mm 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
- Stroke300 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X300-08B
The AirTAC SAIF50X300-08B is a double-acting ISO 15552 profile cylinder featuring a built-in 4M210-08 5/2 solenoid valve. This integrated manifold design eliminates the need for a remote valve, drastically reducing plumbing and panel space for decentralized machine stations. Driven by a DC24V terminal entry coil drawing 3.0 W, it responds in 0.05 s. The 4M210-08 valve provides a 16.0 mm2 orifice (Cv 0.89) and switches up to 5 cycles per second.
While the bare cylinder body rates to 1.0 MPa, the practical operating pressure for this valved assembly is 0.15-0.8 MPa, yielding a 982 N push force at 0.5 MPa. The manifold connects to the cylinder via O8 x O5 PU tubing, distinguishing the 1/4" valve port from the cylinder's own 1/4" port. Factory set to retract the rod when energised, the valve can be repositioned to extend on signal. The 300 mm stroke falls within the 1200 mm standard limit but requires attention to side loads.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X300-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X300-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 300 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 SAIF50X300-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×300 | 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 SAIF50X300-08B Is Used
Decentralized Conveyor Diverters
Eliminates remote valve banks on long conveyor lines by switching the 50 mm bore directly at the divert gate using a single DC24V signal.
Space-Tight Assembly Stations
Fits into compact machine footprints where a separate 4M210 valve and manifold would add unacceptable envelope width to the ISO 15552 profile.
Retrofit Automation Upgrades
Ideal for upgrading older pneumatic setups where routing new air tubing back to a central panel is difficult, relying instead on localized wiring.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X300-08B the Right Choice?
Choose this 50 mm bore when you need 982 N push force at 0.5 MPa; stepping down to a 40 mm bore drops output to 628 N, while a 63 mm bore increases it to 1559 N. The self-valved SAIF architecture is optimal for space-tight machines or retrofits where running separate valve tubing is costly. A single DC24V terminal connection drives the unit, simplifying wiring. For stroke lengths of 300 mm or more, always use a guide rail to prevent rod side-loading and premature seal wear.
This assembly does not hold its load without live pressure, as the 5/2 valve routes air rather than locking it. For position holding, consider an AirTAC SAIL lock cylinder. When ordering a replacement, match the 50 mm bore, 300 mm stroke, 1/4" valve port, DC24V voltage, PT thread, and terminal entry. This unit lacks a piston magnet, so CMSE reed or DMSE electronic sensors cannot be fitted without specifying 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 SAIF50X300-08B FAQ
At 0.5 MPa, the 50 mm bore generates a 982 N push force and an 825 N pull force. The integrated 4M210-08 5/2 valve has an effective area of 16.0 mm2 (Cv 0.89) and supports a maximum frequency of 5 cycles per second.
No separate pilot is needed; the 4M210 valve is internally piloted. The factory setting retracts the rod when the DC24V coil is energised, but you can reposition the valve on the manifold to make it extend-when-energised.
Related AirTAC Cylinders & Valves
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