Airtac SAIF Series Standard Cylinder with Valve SAIF40X800S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X800S-08B is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 800mm 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
- Stroke800 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X800S-08B
The AirTAC SAIF40X800S-08B is a double-acting ISO 15552 profile cylinder equipped with a built-in 4M210-08 5/2 solenoid valve, providing a Cv of 0.89 and a 16.0mm2 effective orifice. Driven by a DC24V terminal entry coil consuming 3.0W, it activates in 0.05s or less under IP65 protection. Because the cylinder rates to 1.0MPa but the integrated valve operates at 0.15-0.8MPa, the practical working range for this assembled unit is 0.15-0.8MPa. It delivers 628N of push force at 0.5MPa.
By integrating the valve directly onto a manifold block via O8xO5 PU tubing, this unit eliminates remote plumbing and saves panel space, making it ideal for decentralized stations across large machines. The factory setting retracts the piston rod when the coil is energised, but you can reposition the valve to extend-when-energised. Equipped with a magnet for CMSE reed and DMSE electronic sensors, it uses a carbon steel rod and PT1/4 cylinder ports.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X800S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X800S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAIF40X800S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×800 | 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 SAIF40X800S-08B Is Used
Decentralized Stations
Perfect for large machines with many actuators, as the built-in DC24V valve removes the need to run long air lines back to a central manifold.
Space-Tight Machines
Saves valuable panel and footprint space by mounting the 4M210 valve directly on the cylinder body via a compact manifold block.
Retrofit Upgrades
Ideal for upgrading existing ISO 15552 assemblies where installing external valve plumbing is too costly or physically restrictive.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X800S-08B the Right Choice?
Choose this self-valved SAIF40X800S-08B when decentralized control is preferred over a separate cylinder and remote valve bank, as it cuts wiring and tubing complexity. The 40mm bore yields 628N push at 0.5MPa; step down to a 32mm bore for 402N push if the load is lighter, or up to a 50mm bore for 982N if higher thrust is required. The DC24V terminal coil and 1/4" valve port suit standard control setups.
At 800mm stroke, avoid side loads by guiding the rod externally to prevent binding. Remember the 5/2 valve routes air but does not lock the load; if you need true position holding without live pressure, use a SAIL lock or BSAI clamp-lock cylinder. When ordering replacements, match the 40mm bore, 800mm stroke, 4M210-08 valve, DC24V terminal entry, PT thread, and -S 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 SAIF40X800S-08B FAQ
The 40mm bore provides 628N push and 528N pull force at 0.5MPa. The built-in 4M210-08 5/2 valve offers an effective area of 16.0mm2 (Cv 0.89) with a maximum frequency of 5 cycles per second.
The DC24V terminal coil drives the 5/2 valve, which routes air to extend or retract the rod. By factory default, the rod retracts when the coil is energised, but you can reposition the valve to extend-when-energised. The valve routes air but does not lock the load; for position holding without live pressure, use a SAIL or BSAI cylinder.
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