Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08A 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"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08A
The AirTAC SAIF40X450-08A is a double-acting ISO 15552 profile cylinder equipped with a built-in 4M210-08 5/2 solenoid valve, delivering a Cv of 0.89 and a 16.0 mm2 effective orifice. Driven by an AC220V terminal coil consuming 3.5 VA, it responds in 0.05 s with an IP65 rating. The integrated manifold uses an O8 x O5 PU tube to bridge the valve and cylinder, eliminating the need for separate remote plumbing. Because the valve operates at 0.15-0.8 MPa, the practical working pressure for the assembled SAIF unit is 0.15-0.8 MPa, even though the cylinder body rates to 1.0 MPa.
At 0.5 MPa, this 40 mm bore generates 628 N of push force and 528 N of pull force, scaling up to 1130 N at 0.9 MPa. By default, the factory setting retracts the piston rod when the coil is energised, but you can reposition the valve to extend-when-energised. The decentralized design allows one coil signal to drive the actuator directly, saving panel space and tubing runs across large machines.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08A |
|---|---|
| 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 | 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 SAIF40X450-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×450 | 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 SAIF40X450-08A Is Used
Decentralized Assembly Lines
Ideal for large machines with decentralized stations, cutting tubing runs by switching the actuator directly from one AC220V coil signal.
Space-Constrained Machinery
Fits compact envelopes where a separate remote valve would consume valuable panel space, delivering 628 N push force at 0.5 MPa.
Retrofit Automation
Perfect for upgrading older pneumatic setups where running long valve tubing is costly, using the built-in 4M210-08 valve with a 16.0 mm2 orifice.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08A the Right Choice?
Choose this 40 mm bore when you need moderate thrust (628 N push at 0.5 MPa); step down to the 32 mm bore for lighter loads (402 N push at 0.5 MPa), or up to the 50 mm bore for heavier tasks (982 N push at 0.5 MPa). A self-valved SAIF beats a separate cylinder plus remote valve in space-tight machines and decentralized stations by cutting wiring and plumbing. For replacements, verify the 40 mm bore, 450 mm stroke, 1/4" valve port, PT1/4" cylinder port, AC220V terminal coil, PT thread, and absence of a magnet. Because the stroke is 450 mm, add an external guide to manage side loads and prevent rod deflection. Note that the 5/2 valve routes air but does not hold the load without live pressure; for true locking, use SAIL or BSAI.
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 SAIF40X450-08A FAQ
The 40 mm bore generates 628 N push and 528 N pull force at 0.5 MPa, reaching 1130 N push at 0.9 MPa. The built-in 4M210-08 valve provides a 16.0 mm2 effective orifice (Cv 0.89) with a max frequency of 5 cycles/sec.
No separate remote valve is needed. The integrated 4M210-08 5/2 solenoid valve switches the cylinder directly from one AC220V terminal coil signal. By default, the rod retracts when energised, but you can reposition the valve to extend-when-energised.
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