Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08A is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 300mm 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
- Stroke300 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08A
The AirTAC SAIF40X300S-08A is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. The built-in valve provides an effective flow area of 16.0 mm2 (Cv 0.89) and mounts directly via a manifold block using O8 x O5 PU tubing, eliminating the need for a remote valve island. Driven by an AC220V terminal coil drawing 3.5 VA, it activates in under 0.05 s. The carbon steel piston rod includes a magnet for CMSE reed and DMSE electronic sensors.
While the cylinder body rates to 1.0 MPa, the practical operating range for this valved assembly is 0.15-0.8 MPa, supporting speeds of 30-800 mm/s. It delivers 628 N of push thrust and 528 N of pull thrust at 0.5 MPa. By default, the factory setting retracts the rod when the coil is energised, but this can be reconfigured to extend-when-energised simply by repositioning the valve on the manifold.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08A |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 300 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 | AC220V · AC 3.5 VA |
| 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 SAIF40X300S-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×300 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| A | Coil voltage AC220V. |
| 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 SAIF40X300S-08A Is Used
Decentralized Stations
Ideal for large machines with distributed stations, switching directly from one AC220V coil signal without running long pneumatic lines back to a central panel.
Mid-Force Actuation
Provides 628 N push force at 0.5 MPa for clamping or lifting tasks where a 32mm bore is insufficient but a 50mm bore consumes too much space.
Space-Constrained Retrofits
Drops into tight machine footprints using the ISO 15552 mounting interface, with the manifold block and short PU tubing keeping the overall envelope compact.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X300S-08A the Right Choice?
Choose this 40mm bore when a 32mm cylinder (402 N push at 0.5 MPa) lacks force, but a 50mm unit (982 N) is oversized. The 300mm stroke requires attention to side loads; ensure adequate guide rails to prevent rod bending. This self-valved design excels in decentralized stations where running separate valve tubing is costly, saving panel space and wiring.
For load-holding applications, note that neither the 5/2 valve nor the adjustable air cushions act as a lock; the valve merely routes air and drops pressure when unpowered. Consider an AirTAC SAIL lock cylinder if static holding is required. Replacement match: 40mm bore, 300mm stroke, 1/4" cylinder port, 4M210-08 valve port, AC220V, terminal entry, PT thread, with -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 SAIF40X300S-08A FAQ
At 0.5 MPa, it provides 628 N push and 528 N pull thrust. The integrated 4M210-08 5/2 valve has a 16.0 mm2 orifice (Cv 0.89) and a maximum frequency of 5 cycles per second.
No, the 5/2 valve is internally piloted and holds its position via pilot pressure, not a spring. By factory default, energising the AC220V coil retracts the rod, but you can reposition the valve on the manifold to extend-when-energised instead.
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