Airtac SAIF Series Standard Cylinder with Valve SAIF40X400S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X400S-08B is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 400mm 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
- Stroke400 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X400S-08B
The AirTAC SAIF40X400S-08B is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. Driven by a DC24V terminal coil drawing 3.0 W, it delivers a 628 N push force at 0.5 MPa. The valve provides a 16.0 mm2 effective area (Cv 0.89) and switches at up to 5 cycles per second. Because the manifold block mounts directly to the cylinder using an O8 x O5 PU tube, you eliminate remote plumbing and save panel space.
The base cylinder rates to 1.0 MPa, but the practical operating range for this valved assembly is 0.15-0.8 MPa. By default, the piston rod retracts when the coil is energised, though you can reconfigure it to extend-when-energised simply by repositioning the valve. This 400 mm stroke version includes a magnet for CMSE reed and DMSE electronic sensors, and its carbon steel rod handles decentralized automation stations effortlessly.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X400S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X400S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAIF40X400S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×400 | 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 SAIF40X400S-08B Is Used
Decentralized Automation
Perfect for large machines with decentralized stations, eliminating the need for a remote valve bank and extensive tubing runs.
Space-Tight Machinery
Ideal for compact equipment where panel space is limited, as the built-in valve manifold handles switching directly on the cylinder body.
Retrofit & Upgrades
A great choice for upgrading older lines where routing new pneumatic tubing to a central manifold is too costly or complex.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X400S-08B the Right Choice?
Choose this 40 mm bore when you need 628 N of push force at 0.5 MPa; stepping down to a 32 mm bore drops the push force to 402 N, while a 50 mm bore raises it to 982 N. A self-valved SAIF unit is ideal for space-tight machines or retrofits where running valve tubing is costly, as it switches itself from one coil signal. The 4M210-08 valve uses a 1/4" port, while the cylinder port is PT1/4. Remember that the 5/2 valve routes air and is not a lock; the air cushion only decelerates near stroke end. For load-holding, consider a SAIL lock cylinder.
Because the 400 mm stroke exceeds 300 mm, ensure you use a guide mechanism to prevent excessive side-loading on the carbon steel rod. This assembly includes a magnet (-S) for DMSE electronic and CMSE reed switches. To replace this unit, match the 40 mm bore, 400 mm stroke, PT1/4 port threads, 4M210-08 valve, DC24V terminal coil, and the sensor 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 SAIF40X400S-08B FAQ
At 0.5 MPa, this 40 mm bore cylinder provides a 628 N push force and a 528 N pull force. The integrated 4M210-08 5/2 valve has an effective area of 16.0 mm2 (Cv 0.89) and operates at up to 5 cycles per second.
No, the integrated 4M210-08 valve switches the cylinder directly from one DC24V coil signal. By factory default, the rod retracts when the coil is energised, but it can be reconfigured to extend-when-energised by repositioning the valve.
Related AirTAC Cylinders & Valves
Request a Quote for Airtac SAIF Series Standard Cylinder with Valve SAIF40X400S-08B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.