The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X50-08E is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 50mm 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.
The AirTAC SAIF40X50-08E is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. This specific configuration uses an AC24V terminal coil and a PT1/4 cylinder port, while the valve manifold connects via an O8 x O5 PU tube. By embedding the valve directly on the unit, it eliminates remote plumbing and saves panel space, making it highly effective for decentralized machine stations. The 4M210-08 valve provides a 16.0 mm2 orifice (Cv 0.89) and supports a max frequency of 5 cycles/sec.
Although the cylinder body itself rates to 1.0 MPa, the practical operating range for this valved assembly is 0.15-0.8 MPa. At 0.5 MPa, the 40mm bore generates 628N of push force and 528N of pull force. Factory set to retract the rod when the coil is energised, the valve can be physically repositioned to extend-when-energised if your sequence demands it. The assembly operates smoothly at speeds of 30-800 mm/s.
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X50-08E |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| 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 | AC24V · 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 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.
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×50 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| E | Coil voltage AC24V. |
| 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).
Eliminates the need to run long valve tubing back to a central manifold, allowing independent cylinder control directly at each station.
The integrated valve manifold saves valuable envelope space on tight machinery, providing 628N of clamping force at 0.5 MPa.
The AC24V terminal coil offers safer voltage control for sensitive manufacturing environments while maintaining IP65 protection.
Choose this AC24V terminal-entry model when you need low-voltage control safety alongside self-switching convenience. If your application requires greater thrust, stepping up to the 50mm bore yields 982N push force at 0.5 MPa; if less force is needed, the 32mm bore offers 402N. Because the 5/2 valve routes air without mechanically locking the piston, this SAIF unit does not hold loads without live pressure—select a SAIL lock cylinder for fail-safe holding. When replacing, match the 40mm bore, 50mm stroke, 08 valve port, AC24V coil, terminal entry, and PT thread. For this 50mm stroke, side-loading is minimal, but always ensure standard mount alignment.
Quick checklist
The 40mm bore generates 628N push and 528N pull force at 0.5 MPa. The built-in 4M210-08 valve has an effective area of 16.0 mm2 (Cv 0.89) and operates at a maximum frequency of 5 cycles/sec.
No, the built-in 5/2 solenoid valve routes air but does not lock the piston. The cylinder requires live pressure to hold a load. For true mechanical holding, consider a SAIL lock cylinder.
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