Airtac SAIF Series Standard Cylinder with Valve SAIF40X400-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X400-08A is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 400mm 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
- Stroke400 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X400-08A
The AirTAC SAIF40X400-08A is a double-acting ISO 15552 profile cylinder featuring a built-in 4M210-08 5/2 solenoid valve. This integrated manifold block design eliminates the need for a separate remote valve, drastically reducing plumbing and panel space for decentralized machine stations. Driven by an AC220V terminal entry coil drawing 3.5 VA, it responds in 0.05 s. The valve provides a 16.0 mm2 effective area (Cv 0.89) and uses an O8 x O5 PU tube to bridge the manifold.
While the bare cylinder body rates to 1.0 MPa, the practical operating pressure for this assembled SAIF unit is 0.15-0.8 MPa due to the internal pilot valve limits. At 0.5 MPa it delivers 628 N of push force and 528 N of pull force. The factory setting retracts the piston rod when the coil is energised, but you can reposition the valve to extend-when-energised. The standard carbon steel rod and PT1/4 tapered cylinder port ensure robust, leak-free daily operation.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X400-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X400-08A |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAIF40X400-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×400 | 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 SAIF40X400-08A Is Used
Decentralized Automation
Perfect for large machines with scattered stations, using one AC220V signal to actuate the 400 mm stroke without running long pneumatic lines back to a main panel.
Material Diverting
Provides 628 N of push force at 0.5 MPa to actuate diverters or gates directly on the conveyor frame, saving space by integrating the 4M210 valve on the cylinder.
Compact Assembly Stations
Ideal for tight machine envelopes where a separate valve would cause physical interference, offering a self-contained pneumatic motion solution.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X400-08A the Right Choice?
Choose this 40 mm bore when you need more thrust than the 32 mm class (402 N at 0.5 MPa) but want a smaller footprint than the 50 mm class (982 N at 0.5 MPa). The SAIF40X400-08A is ideal for 400 mm stroke applications where running long valve tubing from a centralized manifold is costly or space-prohibitive. Because the stroke is 400 mm, ensure adequate guiding to prevent side-loading and premature seal wear. Remember that the built-in 5/2 valve routes air but does not lock the load; for position holding, consider an AirTAC SAIL lock cylinder. Replacement units must match the 40 mm bore, 400 mm stroke, 1/4" valve port, AC220V terminal coil, PT thread, and no 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 SAIF40X400-08A FAQ
At 0.5 MPa, the 40 mm bore generates 628 N of push force and 528 N of pull force. The built-in 4M210-08 valve has a 16.0 mm2 orifice, providing a Cv of 0.89 with a maximum frequency of 5 cycles per second.
No, the SAIF40X400-08A has a 5/2 valve built directly onto the manifold block. It operates from a single AC220V terminal coil signal. By factory default, the rod retracts when energised, but the valve can be repositioned to extend-when-energised.
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