Airtac SAIF Series Standard Cylinder with Valve SAIF40X450S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X450S-08B is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 450mm 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
- Stroke450 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X450S-08B
The AirTAC SAIF40X450S-08B is a double-acting ISO 15552 profile cylinder engineered with a built-in 4M210-08 5/2 solenoid valve. Bundling the actuator and valve into one assembly eliminates the need for a remote valve island, saving panel space and simplifying plumbing for decentralized machine stations. Driven by a DC24V terminal coil drawing 3.0 W, it responds in 0.05 s and carries an IP65 rating. The integrated valve delivers a 16.0 mm2 effective area (Cv 0.89) and connects to the cylinder manifold via an O8 x O5 PU tube.
While the base cylinder body rates to 1.0 MPa, the practical operating pressure for this valved unit is 0.15-0.8 MPa. It delivers 628 N of push thrust and 528 N of pull thrust at 0.5 MPa. Factory-set to retract the rod when the coil is energized, the valve can be repositioned on the manifold to extend-when-energized if your logic requires it. This -S variant includes a magnet for position sensing with AirTAC CMSE reed or DMSE electronic switches.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X450S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X450S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 450 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 SAIF40X450S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×450 | 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 SAIF40X450S-08B Is Used
Decentralized Sorting
Ideal for distributed conveyor diverters where running individual air lines back to a main valve bank is impractical.
Compact Automation
Fits neatly into tight machine frames, using the built-in valve to minimize external plumbing and save valuable panel space.
Retrofit Upgrades
Perfect for upgrading older pneumatic lines, requiring only a DC24V wiring connection at the cylinder instead of new tubing runs.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X450S-08B the Right Choice?
Choose this 40 mm bore when you need more force than a 32 mm cylinder (402 N push at 0.5 MPa) but want a smaller footprint than a 50 mm unit (982 N push). The 450 mm stroke provides extended reach, but at this length you should use a guide to prevent side-load damage to the rod and seals. The self-contained 5/2 valve means you only need to run a single DC24V electrical signal and main air supply to the cylinder, bypassing the cost of routing long valve tubing back to a central control panel.
This assembly does not hold its load without live air pressure, as the 5/2 valve routes air rather than locking it; for load-holding applications consider an AirTAC SAIL lock cylinder. To replace this unit, match the 40 mm bore, 450 mm stroke, PT1/4 cylinder port, 4M210-08 valve (1/4" valve port), DC24V voltage, terminal electrical entry, PT threads, and the -S magnet option.
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 SAIF40X450S-08B FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. The integrated 4M210-08 5/2 valve has a 16.0 mm2 effective area (Cv 0.89) and a maximum frequency of 5 cycles per second.
No, it operates from a single DC24V terminal coil signal. The built-in 5/2 valve switches the cylinder directly. It is factory-set to retract when energized, but you can reposition the valve to extend-when-energized if needed.
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