Airtac SAIF Series Standard Cylinder with Valve SAIF40X80-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X80-08B is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 80mm 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
- Stroke80 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X80-08B
The AirTAC SAIF40X80-08B is a double-acting ISO 15552 profile cylinder with a built-in 4M210-08 5/2 solenoid valve, providing a Cv of 0.89 and a 16.0 mm2 effective orifice. Driven by a DC24V terminal entry coil drawing 3.0 W, it eliminates the need for a separate remote valve, drastically reducing panel space and plumbing. The manifold connects to the cylinder via O8 x O5 PU tubing, while the valve features a 1/4" port distinct from the cylinder's own 1/4" port. Because the valve operates at 0.15-0.8 MPa, this defines the practical working range for the assembled unit, even though the bare cylinder rates to 1.0 MPa.
In its factory setting, the piston rod retracts when the coil is energised, but this can be reconfigured to extend-when-energised simply by repositioning the valve. At 0.5 MPa it generates 628N of push force and 528N of pull force, operating at speeds between 30-800 mm/s. The unit uses a carbon steel piston rod, PT tapered port threads, and includes adjustable air cushions at both ends to decelerate the load near stroke extremes. Note that this 5/2 valve routes air and is not a locking mechanism; for load-holding applications consider the SAIL series.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X80-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X80-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 80 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 SAIF40X80-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×80 | 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 SAIF40X80-08B Is Used
Decentralized Automation Cells
Eliminates long air tubing runs to a central panel by integrating the 4M210 valve directly on the cylinder, ideal for multi-station factory layouts.
Compact Clamping Fixtures
Provides 628N of clamping force at 0.5 MPa in tight machine spaces where mounting a separate valve and manifold block is physically impossible.
Wiring Simplification Retrofits
Upgrades older pneumatic systems by replacing remote valve banks with a self-switching cylinder that needs only a single DC24V terminal connection.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X80-08B the Right Choice?
Choose this 40mm bore when you need higher force than the 32mm version (402N push at 0.5 MPa) but want a more compact footprint than the 50mm option (982N push). The integrated 4M210-08 valve makes the SAIF40X80-08B perfect for decentralized stations across large machines, as it requires only a single DC24V electrical signal and a 1/4" air supply to function independently. The terminal electrical entry provides a secure, DIN-style wiring connection with IP65 protection and a 0.05s activation time.
When ordering a replacement, verify the 80mm stroke, 1/4" valve port code (08), DC24V voltage (B), terminal entry, PT thread type, and the absence of a magnet (-S). If position feedback is required, note that this unit lacks the standard magnet needed for AirTAC CMSE (reed) or DMSE (electronic) sensors. The 80mm stroke is well within the 1200mm standard maximum, so no side-load guide concerns apply here.
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 SAIF40X80-08B FAQ
At 0.5 MPa, this 40mm bore cylinder generates 628N of push force and 528N of pull force. The built-in 4M210-08 5/2 valve has an effective area of 16.0 mm2 and a Cv of 0.89, supporting a maximum frequency of 5 cycles per second.
No, the SAIF40X80-08B has a built-in 4M210 valve requiring only a DC24V (3.0W) terminal connection. By factory default, energising the coil retracts the rod, but the valve can be repositioned to extend-when-energised. The practical operating pressure is 0.15-0.8 MPa.
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