Airtac SAIF Series Standard Cylinder with Valve SAIF40X225S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X225S-08B is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 225mm 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
- Stroke225 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X225S-08B
The AirTAC SAIF40X225S-08B is a double-acting ISO 15552 profile cylinder with a built-in 4M210-08 5/2 solenoid valve, offering a Cv of 0.89. Driven by a DC24V terminal coil drawing 3.0W, it switches itself from one electrical signal, eliminating remote plumbing. The assembled unit operates safely at 0.15-0.8 MPa, as the valve limits the 1.0 MPa cylinder rating. A carbon steel rod delivers 628N push force at 0.5 MPa.
The manifold connects to the cylinder via O8xO5 PU tubing, meaning the 1/4" valve port differs from the PT1/4" cylinder port. Factory set to retract the rod when energized, the valve can be repositioned for extend-when-energized operation. The -S magnet supports CMSE reed and DMSE electronic sensors for precise positioning feedback.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X225S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X225S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 225 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 SAIF40X225S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×225 | 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 SAIF40X225S-08B Is Used
Decentralized Assembly Stations
Eliminates long air lines from a central manifold by switching the clamp locally via the integrated valve.
Compact Clamping Fixtures
Fits tight machine envelopes where mounting a separate valve is impossible, driving the 628N clamp directly.
Retrofit Diverter Gates
Upgrades existing conveyors with self-switching actuators, minimizing pneumatic rewiring during installation.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X225S-08B the Right Choice?
Choose this self-valved SAIF40 unit to save panel space and wiring in decentralized stations, avoiding the tubing runs a separate SAI cylinder and remote valve require. If your application needs higher thrust, stepping up to the 50mm bore yields 982N push at 0.5 MPa. For load-holding, select a SAIL lock cylinder instead, as the 5/2 valve routes air but does not brake. To replace this exact unit, match the 40mm bore, 225mm stroke, 1/4" valve port, DC24V voltage, terminal entry, PT thread, and -S magnet. Since the stroke is 225mm, ensure adequate guiding to prevent rod side-load wear.
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 SAIF40X225S-08B FAQ
The 40mm bore generates 628N push and 528N pull force at 0.5 MPa. The built-in 4M210-08 valve provides an effective area of 16.0 mm2 (Cv 0.89).
Yes. The factory setting retracts the rod when the DC24V coil is energized, but you can reposition the 5/2 valve to extend-when-energized. No separate remote valve is needed.
Related AirTAC Cylinders & Valves
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