Airtac SAIF Series Standard Cylinder with Valve SAIF40X500S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X500S-08B 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"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X500S-08B
The AirTAC SAIF40X500S-08B is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve, delivering a Cv of 0.89 and a 16.0 mm2 orifice. Driven by a DC24V terminal entry coil drawing 3.0 W, it activates in 0.05 s or less with IP65 protection. 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. It generates 628 N of push force at 0.5 MPa and includes an -S magnet for precise position sensing with CMSE reed and DMSE solid-state switches.
By switching itself from a single coil signal, this unit eliminates remote plumbing and saves panel space, making it ideal for decentralized machine stations. The manifold connects to the cylinder via O8 x O5 PU tubing, and the valve port (1/4) is distinct from the cylinder port (1/4). Factory-set to retract the rod when energized, the valve can be repositioned to extend-when-energised if your cycle logic requires it. The carbon steel piston rod and standard PT tapered threads ensure robust, leak-free pneumatic connections.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X500S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X500S-08B |
|---|---|
| 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 | 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 (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 SAIF40X500S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×500 | 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 SAIF40X500S-08B Is Used
Decentralized Assembly Lines
Eliminates the need for a central valve bank on large machines by self-switching the 500 mm stroke directly from a DC24V signal.
Space-Constrained Robotics
Fits compact automated stations where running external pneumatic tubing is costly, providing 628 N of push force at 0.5 MPa.
Sensor-Equipped Handling
The integrated -S magnet works with CMSE and DMSE switches to confirm mid-stroke or end-of-stroke positions on long 500 mm travels.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X500S-08B the Right Choice?
Choose this 40 mm bore when a 32 mm bore (providing 402 N push at 0.5 MPa) is too weak, but a 50 mm bore (982 N at 0.5 MPa) is oversized. The integrated 4M210-08 valve flows enough air for the 30-800 mm/s speed range, making a self-valved SAIF superior to running separate cylinder and remote valve setups where space and wiring are tight. For load-holding applications, note that the 5/2 valve routes air but does not lock the piston; consider an AirTAC SAIL lock cylinder for positive holding. At 500 mm stroke, guide the load to prevent rod side-loading and ensure the piston isn't subjected to lateral stress. Replacement matches require: 40 mm bore, 500 mm stroke, 1/4 valve port, DC24V voltage, terminal entry, PT threads, and the -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 SAIF40X500S-08B FAQ
At 0.5 MPa it provides 628 N push and 528 N pull force. The built-in 4M210-08 5/2 valve has an effective area of 16.0 mm2 (Cv 0.89).
Yes. The factory setting retracts the rod when the DC24V coil is energised, but you can reposition the valve to extend-when-energised. No separate remote valve is needed.
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