Airtac SAIF Series Standard Cylinder with Valve SAIF50X150-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X150-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 150mm 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.
- BoreØ50 mm
- Stroke150 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X150-08B
The AirTAC SAIF50X150-08B is a double-acting ISO 15552 profile cylinder with a built-in 4M210-08 5/2 solenoid valve, delivering a Cv of 0.89 and a 16.0 mm2 effective orifice. Driven by a DC24V terminal-entry coil drawing 3.0 W, it activates in 0.05 s or less. The base cylinder accepts air filtered to 40 um and features a carbon steel piston rod. Because the integrated valve operates at 0.15-0.8 MPa, this defines the practical working pressure for the assembled unit, even though the cylinder body itself rates to 1.0 MPa.
At 0.5 MPa it generates 982 N of push thrust and 825 N of pull thrust. The manifold connects to the cylinder via O8 x O5 PU tubing, meaning the 1/4" valve port differs from the cylinder's own porting. Factory-set to retract the rod when the coil is energised, the valve can be repositioned to extend-when-energised. This decentralized design eliminates remote valves and excess plumbing, requiring only a single electrical signal to drive the actuator.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X150-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X150-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 150 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 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 SAIF50X150-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×150 | 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 SAIF50X150-08B Is Used
Decentralized Machine Stations
Eliminates the need for a central valve island by switching locally via the DC24V signal, drastically reducing tubing runs across large automated machinery.
Compact Material Handling
Provides 982 N of push force at 0.5 MPa in tight envelope spaces where mounting a separate 5/2 valve and cylinder assembly is physically impossible.
Retrofit Automation Upgrades
Simplifies electrical and pneumatic integration on older equipment by using a single terminal-entry coil to control the 50 mm bore actuator directly.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X150-08B the Right Choice?
Choose this 50 mm bore when a 40 mm bore (628 N push at 0.5 MPa) lacks thrust or a 63 mm bore (1559 N push) is physically too large. The SAIF50X150-08B is ideal for decentralized stations where running pneumatic tubing from a distant valve island is costly or space-prohibitive. The DC24V terminal coil offers low power consumption and safe wiring, while the PT-threaded 1/4" valve port matches standard local fittings. To replace this unit, match the 50 mm bore, 150 mm stroke, 4M210-08 valve, DC24V voltage, terminal entry, PT threads, and standard carbon steel rod.
For this 150 mm stroke, ensure adequate guide support to prevent side-load wear on the cylinder seals. Note that the built-in 5/2 valve routes air but does not lock the load; if static holding is required, consider an AirTAC SAIL lock cylinder. Sensors are not included, but adding an -S magnet version enables CMSE reed or DMSE electronic switches in the side grooves.
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 SAIF50X150-08B FAQ
At 0.5 MPa it provides 982 N push and 825 N pull force. The integrated 4M210-08 valve operates at 0.15-0.8 MPa, which sets the practical working pressure for the assembly, despite the cylinder body rating of 1.0 MPa.
No separate pilot is needed; the 4M210 valve is internally piloted. It is a 5/2 design that holds its last position via pilot pressure, not a spring. Factory-set to retract when energised, it can be reconfigured to extend-when-energised by repositioning the valve.
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