Airtac SAIF Series Standard Cylinder with Valve SAIF40X50-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X50-08A is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 50mm 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
- Stroke50 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X50-08A
The AirTAC SAIF40X50-08A is a double-acting ISO 15552 profile cylinder featuring a built-in 4M210-08 5/2 solenoid valve. This integrated assembly delivers a 16.0 mm2 effective area (Cv 0.89) and operates on an AC220V terminal coil drawing 3.5 VA. The cylinder body features a PT1/4 port, while the valve manifold utilizes a 1/4 inch port connected via O8xO5 PU tubing. Because the valve limits the system, the practical working pressure is 0.15-0.8 MPa, even though the cylinder body itself rates to 1.0 MPa.
By default, the piston rod retracts when the coil is energised, but this can be reconfigured to extend-when-energised simply by repositioning the valve. This self-switching design eliminates the need for a separate remote valve, drastically reducing plumbing and panel space. It provides 628N of push force at 0.5 MPa, switches in 0.05 seconds, and is perfectly suited for decentralized installations across large machines.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X50-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X50-08A |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 50 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 SAIF40X50-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×50 | 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 SAIF40X50-08A Is Used
Decentralized Stations
Ideal for large machines with multiple nodes, eliminating long tubing runs by switching locally via the AC220V terminal coil.
Space-Tight Machinery
Delivers 628N push force in a compact ISO 15552 profile, saving valuable panel space by removing the need for an external valve bank.
Retrofit Automation
Simplifies upgrades where adding dedicated pneumatic plumbing is costly, requiring only a single electrical connection to actuate.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X50-08A the Right Choice?
Choose this 40mm bore when you need 628N push force at 0.5 MPa; step down to a 32mm bore for 402N, or up to a 50mm bore for 982N if your payload requires more thrust. The self-valved SAIF40X50-08A excels over a standard cylinder plus remote valve in space-tight machines where running tubing is costly, as one AC220V terminal coil signal drives the entire actuator. The assembly uses PT tapered threads and lacks a magnet, so position sensing is not possible without modifying the build.
Remember that the built-in 5/2 valve routes air and is not a mechanical lock; the air cushion only decelerates the rod near stroke end. If your application requires true load-holding without live pressure, consider the SAIL lock variant instead. For replacement, verify the 50mm stroke, 1/4 inch valve port, AC220V voltage, terminal entry, and PT thread type.
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 SAIF40X50-08A FAQ
At 0.5 MPa, this 40mm bore cylinder provides 628N of push force and 528N of pull force. The integrated 4M210-08 valve has a 16.0 mm2 orifice with a Cv of 0.89.
No, it features a built-in 4M210 5/2 valve operating on AC220V. By factory default, the rod retracts when the coil is energised, but it can be reconfigured to extend-when-energised by repositioning the valve.
Request a Quote for Airtac SAIF Series Standard Cylinder with Valve SAIF40X50-08A
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.