Airtac SAIF Series Standard Cylinder with Valve SAIF50X125S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X125S-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke125 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X125S-08B
The AirTAC SAIF50X125S-08B is a double-acting ISO 15552 profile cylinder equipped with a built-in 4M210-08 5/2 solenoid valve. This integrated assembly features a 1/4" valve port with a Cv of 0.89 and a DC24V terminal electrical entry. Because the cylinder body rates to 1.0 MPa but the internal pilot valve operates strictly between 0.15-0.8 MPa, the practical working pressure for this valved unit is 0.15-0.8 MPa. In the 50 mm bore class, it delivers 982 N of push force at 0.5 MPa.
By integrating the valve directly onto the cylinder via a manifold block and O8 x O5 PU tubing, this unit eliminates the need for a remote valve bank, saving valuable panel space and reducing plumbing complexity. The factory setting retracts the piston rod when the DC24V coil is energised, but you can reposition the valve to extend-when-energised if your logic requires it. The -S magnet option supports position sensing with AirTAC CMSE reed and DMSE electronic switches.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X125S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X125S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 125 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 SAIF50X125S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×125 | 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 SAIF50X125S-08B Is Used
Decentralized Assembly Stations
Eliminates remote valve plumbing by driving the cylinder from a single DC24V signal, perfect for large machines with distributed pneumatic points.
Compact Clamping Jigs
Provides 982 N of push force at 0.5 MPa with a built-in 4M210-08 valve, saving panel space in tight machining fixtures.
Sensor-Ready Positioning
The -S magnet variant enables precise end-of-stroke detection using AirTAC CMSE reed or DMSE electronic switches.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X125S-08B the Right Choice?
Select this 50 mm bore model when an application requires 982 N push force at 0.5 MPa; if you need less force, step down to the 40 mm bore (628 N push at 0.5 MPa), or step up to the 63 mm bore (1559 N push at 0.5 MPa) for heavier loads. The self-valved SAIF design is ideal for decentralized machine stations where running individual valve tubing back to a main panel is costly and space-prohibitive. With a DC24V terminal coil, it provides a 3.0 W power draw and a 0.05 s response time.
When ordering a replacement, verify the 50 mm bore, 125 mm stroke, 1/4" valve port, PT thread type, DC24V voltage, terminal entry, and the -S magnet requirement. Note that the 5/2 valve routes air but does not hold the load without live pressure; for secure position holding, consider the SAIL lock or BSAI clamp-lock series instead. Since the stroke is 125 mm, standard side-load precautions apply, though external guides are recommended for any stroke exceeding 300 mm.
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 SAIF50X125S-08B FAQ
The built-in 4M210-08 valve has an effective area of 16.0 mm2 (Cv 0.89). The 50 mm double-acting cylinder generates 982 N of push force and 825 N of pull force at 0.5 MPa.
No, the 5/2 solenoid valve routes air but does not lock the load without live pressure. By default, the piston rod retracts when the coil is energised, but it can be reconfigured to extend-when-energised by repositioning the valve.
Related AirTAC Cylinders & Valves
Request a Quote for Airtac SAIF Series Standard Cylinder with Valve SAIF50X125S-08B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.