Airtac SAIF Series Standard Cylinder with Valve SAIF40X250-06B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X250-06B is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 250mm stroke and a built-in 4M210-06 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ40 mm
- Stroke250 mm
- Built-in valve4M210-06
- Valve port1/8"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X250-06B
The AirTAC SAIF40X250-06B is a double-acting profile cylinder dimensionally interchangeable per ISO 15552, fitted with a 4M210-06 5/2 solenoid valve. This 4M210-06 valve provides a 14.0 mm2 effective area (Cv 0.78) and connects to the cylinder via an O8 x O5 PU tube. Driven by a DC24V terminal entry coil drawing 3.0 W, it delivers 628N push force at 0.5 MPa. Although the cylinder body rates to 1.0 MPa, the integrated valve operates at 0.15-0.8 MPa, setting the practical working range for the assembly.
By default, the piston rod retracts when the coil is energised, but you can reconfigure it to extend-when-energised by repositioning the valve. This self-switching design requires no remote valve, reducing tubing and panel space for decentralized machine stations. The 5/2 valve holds its position via internal pilot pressure, not a spring. It does not lock the load without live pressure; for true load-holding, consider the SAIL series.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X250-06B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X250-06B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| PU tube | Ø8 × Ø5 |
| Built-in valve | 4M210-06 (5/2) |
|---|---|
| Valve flow | 14.0 mm² (Cv 0.78) |
| 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 SAIF40X250-06B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×250 | Bore × stroke in mm. |
| -06 | Valve port 1/8" → 4M210-06. |
| 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 SAIF40X250-06B Is Used
Decentralized Assembly Stations
Ideal for large machines with distributed stations, using a single DC24V signal to drive the cylinder without routing long pneumatic lines back to a central valve island.
Compact Clamping Fixtures
Provides 628N of push force at 0.5 MPa for clamping parts in tight cells where mounting a separate 5/2 valve would consume valuable fixture space.
Retrofit Automation
Perfect for upgrading existing machinery where adding a remote valve manifold is costly, utilizing the built-in 4M210-06 valve and terminal entry for quick wiring.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X250-06B the Right Choice?
Choose this 40mm bore when you need more force than the 32mm bore (402N push at 0.5 MPa) but want a smaller envelope than the 50mm bore (982N push). The self-valved SAIF40X250-06B excels over a separate cylinder and remote valve in space-tight machines by eliminating long tubing runs and panel-mounted valves. Your configuration specifies a DC24V terminal coil, PT thread, and a 1/8" valve port (cylinder port is 1/4"). Since the stroke is 250mm, ensure adequate guide support to handle side loads and prevent rod binding. This build has no magnet; add -S if you require CMSE or DMSE sensors.
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 SAIF40X250-06B FAQ
The 40mm bore generates 628N push and 528N pull force at 0.5 MPa. The integrated 4M210-06 5/2 valve has a 14.0 mm2 effective area (Cv 0.78) and a maximum frequency of 5 cycles per second.
No, it has a built-in 4M210-06 valve requiring only a DC24V electrical signal. By default, the rod retracts when energised, but you can reposition the valve to extend-when-energised. It holds position via pilot pressure, not a mechanical lock.
Related AirTAC Cylinders & Valves
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