Airtac SAIF Series Standard Cylinder with Valve SAIF50X450-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X450-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke450 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X450-08B
The AirTAC SAIF50X450-08B is a double-acting profile cylinder with a built-in 4M210-08 5/2 solenoid valve, delivering a Cv of 0.89 and an effective area of 16.0 mm2. Driven by a DC24V terminal coil consuming 3.0 W, it activates in 0.05 s with an IP65 rating. Because the valve manifold mounts directly to the extruded aluminum barrel using O8 x O5 PU tubing, it eliminates remote plumbing and saves panel space for decentralized machine stations. The base cylinder is dimensionally interchangeable per ISO 15552.
Although the cylinder body rates to 1.0 MPa, the integrated valve operates at 0.15-0.8 MPa, making the practical SAIF working range 0.15-0.8 MPa. At 0.5 MPa this 50 mm bore generates 982 N of push force and 825 N of pull force, scaling to 1767 N push at 0.9 MPa. The factory setting retracts the rod when the coil is energised, but you can reposition the valve to extend-when-energised. The 5/2 valve holds its position via internal pilot, not a spring.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X450-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X450-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 450 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 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 SAIF50X450-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×450 | 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 SAIF50X450-08B Is Used
Decentralized Assembly Stations
Ideal for large machines where running remote valve tubing is costly; the DC24V terminal coil drives the 4M210-08 valve directly at the cylinder.
Material Diversion Gates
The 450 mm stroke provides ample travel for sorting packages, while the integrated 5/2 valve ensures rapid 0.05 s switching at 30-800 mm/s speeds.
Space-Constrained Automation
Eliminates the need for a separate valve bank, saving critical panel space while delivering 982 N push force at 0.5 MPa.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X450-08B the Right Choice?
Choose this self-valved SAIF unit when a decentralized station needs to eliminate separate valves and long tubing runs. The 450 mm stroke exceeds standard compact sizes but remains within the 1200 mm maximum for this bore, meaning no non-standard stroke surcharge applies. Because the 450 mm stroke generates significant side loads, ensure you use an external guide to prevent rod binding and premature seal wear. If your application needs less push force, stepping down to a 40 mm bore yields 628 N push at 0.5 MPa; stepping up to a 63 mm bore provides 1559 N.
This configuration uses a DC24V terminal entry with PT threaded ports. Remember the built-in valve routes air but does not lock the load mechanically—use a SAIL lock cylinder if you need true position holding without live pressure. For exact replacements, match the 50 mm bore, 450 mm stroke, 1/4" valve port, DC24V voltage, terminal entry, and PT thread.
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 SAIF50X450-08B FAQ
The 50 mm bore generates 982 N push force at 0.5 MPa and 1767 N at 0.9 MPa. The built-in 4M210-08 valve has an effective area of 16.0 mm2 and a Cv of 0.89.
Yes. The factory setting retracts the rod when the DC24V coil is energised, but you can reposition the valve on the manifold to extend-when-energised. The 5/2 valve holds its last position via internal pilot pressure.
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