Airtac SAIF Series Standard Cylinder with Valve SAIF50X900S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X900S-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 900mm 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
- Stroke900 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X900S-08B
The AirTAC SAIF50X900S-08B is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. Delivering a Cv of 0.89 and 982N of push force at 0.5 MPa, it combines actuation and control into one assembly. This specific unit is configured for DC24V operation with a terminal electrical entry, drawing 3.0 W and protected to IP65. Because the manifold block relies on a 4M-series valve, the practical operating pressure is 0.15-0.8 MPa, even though the bare cylinder rates to 1.0 MPa.
By embedding the valve directly on the profile barrel using O8xO5 PU tubing, it eliminates remote plumbing and saves panel space, making it ideal for decentralized machine stations. The factory setting retracts the piston rod when the coil is energised, but you can reposition the valve to extend-when-energised if your sequence requires it. This 900mm stroke variant includes a magnet for CMSE reed and DMSE electronic sensors, and the carbon steel rod is supported by adjustable air cushions at both ends.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X900S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X900S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 900 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 SAIF50X900S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×900 | 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 SAIF50X900S-08B Is Used
Decentralized Assembly Lines
Eliminates the need for long air tubes to a central panel by switching locally via the DC24V terminal coil, cutting wiring and plumbing costs across large factory layouts.
Long-Stroke Material Handling
The 900mm stroke and 982N push force at 0.5 MPa suit pusher mechanisms on conveyors, where the built-in 4M210 valve ensures rapid 5 cycle/sec operation.
Space-Constrained Retrofits
Ideal for upgrading existing machinery where adding external valve islands is impossible, delivering a compact ISO 15552 actuator with integrated 5/2 control.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X900S-08B the Right Choice?
Choose this self-valved SAIF50X900S-08B when you need decentralized actuation across a large machine footprint without running long valve tubing back to a central manifold. If your application demands higher thrust, stepping up to the 63mm bore yields 1559N push force at 0.5 MPa; if less force is needed, the 40mm bore provides 628N. Because this model features a 900mm stroke, you must account for rod side-loading and use a guide rail to prevent cylinder binding. Remember that the built-in 5/2 valve routes air but does not lock the load—use AirTAC SAIL or BSAI cylinders if static position holding is required. To replace this unit, match the 50mm bore, 900mm stroke, 1/4" valve port, DC24V coil, terminal entry, PT thread, and -S 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 SAIF50X900S-08B FAQ
The 50mm bore generates 982N push and 825N pull force at 0.5 MPa, reaching 1767N push at 0.9 MPa. The built-in 4M210-08 valve provides an effective area of 16.0 mm2 (Cv 0.89).
No, the 5/2 valve routes air but does not lock the piston. By default, the rod retracts when the DC24V coil is energised, but it can be reconfigured to extend-when-energised by repositioning the valve.
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