Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08B 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 SAIF40X450-08B
The AirTAC SAIF40X450-08B is a double-acting ISO 15552 profile cylinder engineered with a built-in 4M210-08 5/2 solenoid valve, delivering a 16.0 mm2 effective area (Cv 0.89). Driven by a DC24V terminal entry coil consuming 3.0 W, it activates in 0.05 s or less with IP65 protection. The integrated valve manifold connects via O8 x O5 PU tubing, meaning the 1/4" valve port and the cylinder's 1/4" port are seamlessly bridged without external plumbing.
Because the 4M210 valve operates at 0.15-0.8 MPa, the practical working pressure of this assembled SAIF unit is 0.15-0.8 MPa, even though the bare cylinder rates to 1.0 MPa. At 0.5 MPa, this 40 mm bore generates 628N of push force and 528N of pull force. The factory setting retracts the piston rod when the coil is energised, but you can reposition the valve to extend-when-energised. This self-switching design eliminates remote valves, saving panel space for decentralized machine stations.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08B |
|---|---|
| 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 SAIF40X450-08B
| 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 SAIF40X450-08B Is Used
Decentralized Assembly Stations
Ideal for large machines with multiple stations, using the built-in DC24V valve to actuate the 450mm stroke locally without running long air lines back to a central manifold.
Space-Tight Diverters
The integrated 4M210 valve and manifold block save critical panel space, providing 628N of push force at 0.5 MPa for diverting packages on conveyor lines.
Retrofit Automation
Perfect for upgrading older pneumatic setups where adding separate remote valves is too costly, offering a self-contained PT-threaded solution that runs at 30-800 mm/s.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X450-08B the Right Choice?
Choose this 40 mm bore when your application requires around 628N of push force at 0.5 MPa; stepping down to a 32 mm bore drops that to 402N, while stepping up to a 50 mm bore yields 982N. The self-valved SAIF40X450-08B excels over a separate cylinder and remote valve when you need decentralized control across a large machine, cutting tubing runs and wiring complexity. Its DC24V terminal coil and PT tapered threads make it a drop-in replacement for standard 24VDC control systems.
For the 450 mm stroke, adding a side-load guide is strongly recommended to prevent rod damage and premature seal wear. Remember that the built-in 5/2 valve routes air but does not lock the load; if you need true position holding under zero pressure, consider the SAIL lock or BSAI clamp-lock series. To match this exact SKU for replacement, you need bore 40, stroke 450, valve port 08, DC24V voltage, terminal entry, PT thread, and no 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 SAIF40X450-08B FAQ
The 40 mm bore generates 628N push and 528N pull force at 0.5 MPa. The built-in 4M210-08 5/2 valve provides a 16.0 mm2 effective area (Cv 0.89) and can cycle up to 5 times per second.
The DC24V terminal coil energizes in 0.05s to drive the 5/2 valve. By factory default, the piston rod retracts when the coil is energised, but you can reposition the valve to extend-when-energised. No separate remote valve is needed.
Related AirTAC Cylinders & Valves
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