Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08A is a genuine double-acting ISO 15552 cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke300 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08A
The AirTAC SAIF40X300-08A is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. Driven by an AC220V terminal coil drawing 3.5 VA, it eliminates the need for a remote valve island, saving panel space and tubing in decentralized machine layouts. The cylinder body rates to 1.0 MPa, but because the built-in valve operates at 0.15-0.8 MPa, the practical working range for the assembled SAIF unit is 0.15-0.8 MPa.
This 40mm bore generates 628N of push force and 528N of pull force at 0.5 MPa. The 4M210-08 valve provides a 16.0 mm2 effective area (Cv 0.89) and supports a max frequency of 5 cycles per second. Factory-set to retract the rod when the coil is energised, the valve can be repositioned to extend-when-energised if your sequence demands it. The manifold connects to the cylinder via O8 x O5 PU tubing, and the valve port (1/4 inch) is distinct from the cylinder port (1/4 inch).
Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08A |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 300 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 | AC220V · 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.
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×300 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| A | Coil voltage AC220V. |
| 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 SAIF40X300-08A Is Used
Decentralized Conveyor Diverters
Ideal for pop-up sorting gates on long conveyor lines where running individual air lines back to a main valve bank is impractical.
Space-Constrained Machinery
Fits into compact automated assembly stations by removing the need for external pneumatic plumbing and separate valve hardware.
Machine Retrofits
Simplifies upgrading legacy equipment by allowing local cylinder control via a single AC220V electrical signal directly at the actuator.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08A the Right Choice?
Choose this 40mm bore when a 32mm bore falls short on thrust (402N push at 0.5 MPa) but a 50mm bore (982N push) would be physically oversized. The 300mm stroke provides ample travel for indexing or lifting tasks, but at this length you should incorporate a linear guide to prevent side-loading damage to the rod and seals. The self-contained AC220V terminal coil design is ideal for retrofitting large machines where routing dedicated valve tubing back to a central panel is costly and complex.
Remember that the integrated 5/2 valve routes air to move the piston; it does not lock or hold the load without live pressure. The variable air cushions only decelerate the rod near the stroke ends. If your application requires true mechanical load-holding, consider an AirTAC SAIL lock cylinder instead. To replace this unit, match the 40mm bore, 300mm stroke, 1/4 inch valve port, AC220V voltage, terminal entry, PT thread, and standard carbon steel rod.
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 SAIF40X300-08A FAQ
At 0.5 MPa, this 40mm bore cylinder provides 628N of push force and 528N of 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, the integrated 4M210 valve is internally piloted and switches the cylinder directly from the AC220V terminal coil signal. By factory default, the cylinder retracts when energised, but you can reposition the valve to extend-when-energised.
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