Airtac SAIF Series Standard Cylinder with Valve SAIF40X500-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X500-08A is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 500mm 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
- Stroke500 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X500-08A
The AirTAC SAIF40X500-08A is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. This built-in valve delivers a Cv of 0.89 and eliminates the need for a remote valve island, saving panel space and plumbing. Equipped with an AC220V terminal entry coil drawing 3.5 VA, it achieves a 0.05 s activation time within an IP65 rated housing. The manifold connects to the cylinder via an O8 x O5 PU tube, keeping the assembly compact.
Because the cylinder body rates to 1.0 MPa but the internal pilot valve operates at 0.15-0.8 MPa, the practical working range for this assembled unit is 0.15-0.8 MPa. At 0.5 MPa it generates 628N of push force and 528N of pull force. By factory default, the piston rod retracts when the coil is energised; this can be reconfigured to extend-when-energised simply by repositioning the valve. The carbon steel piston rod and standard PT 1/4 cylinder port ensure robust, interchangeable mounting.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X500-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X500-08A |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAIF40X500-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×500 | 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 SAIF40X500-08A Is Used
Decentralized Assembly Lines
Eliminates remote valve plumbing on long transfer lines by switching the 500mm stroke directly from a local AC220V signal.
Material Diverters
Provides 628N of push force at 0.5 MPa to actuate sorting gates without needing a separate valve island.
Compact Spot Welding
Saves panel space by integrating the 4M210-08 valve onboard, fitting easily into tight robotic cell envelopes.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X500-08A 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 at 0.5 MPa) would be excessive. The 500mm stroke is well within the 1200mm maximum standard stroke for this bore. However, at 500mm, side-loading becomes a concern; ensure adequate guiding to prevent rod binding and premature seal wear. If your application requires the load to be physically locked in place without live air pressure, note that this 5/2 valve routes air but does not hold the load—consider the AirTAC SAIL lock cylinder series instead.
A self-valved SAIF unit is ideal for decentralized stations across large machines where running individual valve tubing back to a central manifold is costly. When ordering a replacement, verify the 40mm bore, 500mm stroke, 4M210-08 valve port code, AC220V terminal coil, PT tapered threads, and the absence of a magnet (-S not specified).
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 SAIF40X500-08A FAQ
The cylinder generates 628N push and 528N pull force at 0.5 MPa. The integrated 4M210-08 5/2 valve has an effective area of 16.0 mm2 (Cv 0.89) and a maximum frequency of 5 cycles per second.
No, the 4M210-08 valve is built-in. By default, the rod retracts when the AC220V coil is energised, but it can be reconfigured to extend-when-energised by repositioning the valve. This allows a single coil signal to control the cylinder.
Related AirTAC Cylinders & Valves
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