Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08A
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08A 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"
- CoilAC220V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08A
The AirTAC SAIF40X125S-08A is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. This specific SKU is configured with a 1/4" valve port, an AC220V coil with a terminal electrical entry, and a -S magnet for position sensing. The built-in valve provides an effective flow area of 16.0 mm2 (Cv 0.89) and supports a maximum frequency of 5 cycles per second. Because the manifold routes air internally via an O8 x O5 PU tube, you eliminate remote plumbing and save panel space.
The assembled unit operates within a 0.15-0.8 MPa pressure range, as the 4M-series valve limits the cylinder's 1.0 MPa base rating. At 0.5 MPa, this 40mm bore generates 628N of push force and 528N of pull force. By factory default, the piston rod retracts when the coil is energised, but you can reposition the valve to achieve extend-when-energised operation. The -S magnet allows precise tracking using AirTAC CMSE reed or DMSE electronic solid-state sensors.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08A Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08A |
|---|---|
| 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 | 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 SAIF40X125S-08A
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×125 | 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 SAIF40X125S-08A Is Used
Decentralized Automation
Ideal for large machines with multiple stations, eliminating the need for long air tubes back to a central valve island.
Compact Clamping
Provides 628N of clamping force at 0.5 MPa in space-tight machining cells where external valves would not fit.
Sensor-Driven Handling
The integrated -S magnet works with DMSE solid-state sensors for precise end-of-stroke detection in electronic assembly lines.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X125S-08A the Right Choice?
Choose this self-valved SAIF unit when decentralizing control across a large machine makes running individual valve tubing costly or complex. If your application requires less force, stepping down to a 32mm bore yields 402N of push force at 0.5 MPa; stepping up to a 50mm bore provides 982N. This model's AC220V terminal connection suits standard plant power, while the 1/4" valve port ensures adequate flow for the 125mm stroke. Remember that the 5/2 valve routes air but does not lock the load mechanically—consider an AirTAC SAIL lock cylinder if static holding is required.
When replacing this assembly, match the 40mm bore, 125mm stroke, 1/4" valve port, AC220V voltage, terminal entry, PT thread type, and the -S magnet option. The cylinder port itself is also 1/4". Since the stroke is 125mm, side loads are minimal, but ensure proper alignment to maximize 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-08A FAQ
At 0.5 MPa, this 40mm bore cylinder generates 628N of push force and 528N of pull force. The built-in 4M210-08 valve has an effective area of 16.0 mm2 (Cv 0.89).
No, it switches itself from a single AC220V coil signal. By factory default, the rod retracts when energised, but you can reposition the integrated 5/2 valve to extend-when-energised.
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