Airtac SAIF Series Standard Cylinder with Valve SAIF40X125-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X125-08B 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"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X125-08B
The AirTAC SAIF40X125-08B is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. Driven by a DC24V terminal coil drawing 3.0 W with an IP65 rating, it delivers a 16.0 mm2 effective orifice (Cv 0.89). The cylinder bore is 40 mm with a 125 mm stroke, generating 628 N of push force and 528 N of pull force at 0.5 MPa. The carbon steel piston rod and PT tapered threads ensure durable, leak-free connections.
Because the cylinder body rates to 1.0 MPa but the built-in valve operates at 0.15-0.8 MPa, the practical working range for this assembled unit is 0.15-0.8 MPa. The manifold connects to the cylinder via an O8 x O5 PU tube, meaning the 1/4" valve port differs from the cylinder's own 1/4" port. From the factory, the default setting retracts the rod when the coil is energised, though this can be reconfigured to extend-when-energised simply by repositioning the valve.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X125-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X125-08B |
|---|---|
| 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 | 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 SAIF40X125-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×125 | 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 SAIF40X125-08B Is Used
Decentralized Automation Cells
Ideal for large machines with multiple stations, eliminating long tubing runs by switching locally via the integrated 4M210 valve.
Compact Assembly Tooling
Saves valuable panel and footprint space by mounting the valve directly on the cylinder profile, perfect for tight robotic cells.
Retrofit & Upgrades
Simplifies machine upgrades where running new pneumatic tubing is costly; only a single DC24V electrical signal is needed.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X125-08B the Right Choice?
Choose this self-valved SAIF40X125-08B when you need to eliminate remote valve plumbing and save panel space in decentralized machine stations. If your application requires less force, stepping down to a 32 mm bore yields 402 N of push at 0.5 MPa; if you need more thrust, a 50 mm bore provides 982 N. This model's DC24V terminal electrical entry offers safe, low-voltage control with a fast 0.05 s activation time.
Remember that the integrated 5/2 valve routes air but does not lock the load mechanically—air cushions only decelerate near the stroke ends. For positive load-holding requirements, consider an AirTAC SAIL lock cylinder instead. When replacing this unit, match the 40 mm bore, 125 mm stroke, 08 valve port, DC24V voltage, terminal entry, PT threads, and standard rod (no -S magnet). Stroke is under the 1200 mm standard maximum, so no side-load guide note is required.
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 SAIF40X125-08B FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. The integrated 4M210-08 valve has an effective area of 16.0 mm2 (Cv 0.89) and supports a maximum frequency of 5 cycles per second.
No, the SAIF40X125-08B switches itself from one DC24V coil signal. By factory default, the piston rod retracts when the coil is energised, but it can be reconfigured to extend-when-energised by repositioning the valve.
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