Airtac SAIF Series Standard Cylinder with Valve SAIF80X400-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF80X400-08B is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 400mm stroke and a built-in 4M310-08 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ80 mm
- Stroke400 mm
- Built-in valve4M310-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF80X400-08B
The AirTAC SAIF80X400-08B is a double-acting ISO 15552 profile cylinder equipped with a built-in 4M310-08 5/2 solenoid valve. This integrated assembly delivers a Cv of 1.40 and generates a robust push force of 4523N at 0.9 MPa. Wired for DC24V terminal entry, the coil consumes 3.0W with an IP65 rating and a rapid 0.05s activation time. Because the manifold relies on O10xO6.5 PU tubing, the 1/4" valve port is distinct from the cylinder's 3/8" port.
While the bare cylinder rates to 1.0 MPa, the practical SAIF working pressure is 0.15-0.8 MPa due to the internal pilot valve's limits. This decentralized design eliminates remote plumbing, saving panel space. Factory set to retract the rod when energised, the valve can be repositioned to extend on signal. Note that this 5/2 valve routes air but does not lock the load; for position holding, consider the SAIL series.
Airtac SAIF Series Standard Cylinder with Valve SAIF80X400-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF80X400-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø80 mm |
| Stroke | 400 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G3/8 |
| Rod thread | M20×1.5 |
| PU tube | Ø10 × Ø6.5 |
| Built-in valve | 4M310-08 (5/2) |
|---|---|
| Valve flow | 25.0 mm² (Cv 1.40) |
| Max frequency | 4 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 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 SAIF80X400-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 80×400 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M310-08. |
| 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 SAIF80X400-08B Is Used
Decentralized Automation
Perfect for large machines with decentralized stations, eliminating long pneumatic tubing runs by integrating the 4M310 valve directly on the cylinder.
High Force Handling
Delivers 4523N of push force at 0.9 MPa, making it suitable for heavy clamping, pressing, and lifting tasks in compact machinery.
Space-Constrained Retrofits
Ideal for upgrading older equipment where adding a separate valve manifold is impractical, saving valuable panel and floor space.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF80X400-08B the Right Choice?
Choose this 80mm bore when a 63mm bore (2182N push at 0.5 MPa) is insufficient, or step up to a 100mm bore (5497N push at 0.7 MPa) if your load exceeds 4523N. A self-valved SAIF unit is superior to a separate cylinder and remote valve when you need to minimize tubing across decentralized machine stations. The DC24V terminal coil and 1/4" PT valve port simplify electrical and pneumatic connections. Replacement requires matching the 80mm bore, 400mm stroke, 4M310-08 valve, DC24V terminal entry, and PT thread.
With a 400mm stroke, external guide rails are recommended to manage side loads and prevent rod damage. The air cushions (36mm) handle end-of-stroke deceleration, but precise mid-stroke holding requires external mechanics, as the 5/2 valve does not lock without live pressure.
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 SAIF80X400-08B FAQ
The 80mm bore generates a push force of 4523N at 0.9 MPa and a pull force of 2268N at 0.5 MPa. The built-in 4M310-08 5/2 valve provides an effective area of 25.0 mm2 (Cv 1.40).
By factory default, the piston rod retracts when the coil is energized. This can be reconfigured to extend-when-energised by repositioning the valve. The 5/2 valve holds its position via internal pilot pressure, not a spring, eliminating the need for a separate remote valve.
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