Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08B is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 125mm 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
- Stroke125 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08B
The AirTAC SAIF40X125S-08B is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve with a 16.0 mm2 orifice (Cv 0.89). Driven by a DC24V terminal entry coil consuming just 3.0 W, it eliminates the need for remote plumbing. The assembly includes a magnet for CMSE reed and DMSE electronic sensors, while the manifold connects via O8 x O5 PU tubing.
Because the built-in valve operates at 0.15-0.8 MPa, this defines the practical working pressure range despite the cylinder body rating of 1.0 MPa. Generating 628N of push force at 0.5 MPa, it switches directly from one coil signal. Factory-set to retract when energised, the valve can be repositioned to extend on signal, offering flexible decentralized control without a separate panel valve.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 125 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 SAIF40X125S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×125 | 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 SAIF40X125S-08B Is Used
Decentralized Stations
Eliminates long air lines to a central panel by switching locally at the machine node via the integrated 4M210 valve.
Compact Assembly Machines
Saves valuable panel space and reduces wiring complexity with its self-contained DC24V terminal coil and 628N thrust.
Retrofit Upgrades
Ideal for upgrading existing ISO 15552 fixtures where running new valve tubing is costly or physically constrained.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08B the Right Choice?
Choose this self-valved unit to slash tubing and panel space in decentralized layouts. If your application requires higher thrust, stepping up to the 50mm bore yields 982N push force at 0.5 MPa. For load-holding rather than cycling, note that the 5/2 valve routes air but does not lock position; consider the SAIL series for mechanical locking needs. When specifying replacements, verify the 40mm bore, 125mm stroke, PT1/4 cylinder port, 1/4" valve port, DC24V terminal coil, and the -S magnet requirement. At 125mm stroke, side-load is minimal, but always ensure proper guide alignment for optimal seal life.
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 SAIF40X125S-08B FAQ
It delivers 628N push and 528N pull force at 0.5 MPa. The built-in 4M210-08 5/2 valve provides an effective flow area of 16.0 mm2 (Cv 0.89) with a max frequency of 5 cycles per second.
Yes. The factory setting retracts the rod when the DC24V coil is energised, but you can reposition the 5/2 valve to extend-when-energised. It holds its last position via pilot pressure, not a spring, so no separate remote valve is needed.
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