Airtac SAIF Series Standard Cylinder with Valve SAIF50X500-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X500-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 500mm 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
- Stroke500 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X500-08B
The AirTAC SAIF50X500-08B is a double-acting profile cylinder dimensionally interchangeable per ISO 15552, featuring a built-in 4M210-08 5/2 solenoid valve with a 16.0 mm2 orifice (Cv 0.89). Driven by a DC24V terminal entry coil consuming 3.0 W, it activates in 0.05 s or less with IP65 protection. Because the cylinder rates to 1.0 MPa but the internal pilot valve operates at 0.15-0.8 MPa, the practical working range for this assembled unit is 0.15-0.8 MPa.
Generating 982 N of push force at 0.5 MPa and 1767 N at 0.9 MPa, it uses an O8 x O5 PU tube between the manifold and cylinder. 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 tubing, switching directly from one coil signal.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X500-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X500-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 500 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 SAIF50X500-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×500 | 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 SAIF50X500-08B Is Used
Decentralized Machine Stations
Eliminates remote valve plumbing, using a single DC24V signal to drive the 500 mm stroke directly at the station.
Material Handling Diverters
Provides 982 N push at 0.5 MPa to actuate sorting gates, relying on the built-in 4M210 valve for 5 cycle/sec operation.
Space-Constrained Automation
Saves panel footprint by mounting the 5/2 valve directly on the ISO 15552 profile cylinder via a manifold block.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X500-08B the Right Choice?
Choose this 50 mm bore when 40 mm bore cylinders fall short on thrust (628 N push at 0.5 MPa), or step down if 80 mm (2513 N at 0.5 MPa) is overkill. A self-valved SAIF50X500-08B beats a separate cylinder plus remote valve by saving panel space and wiring, making it ideal for decentralized stations across large machines. Specify DC24V power, terminal electrical entry, and PT 1/4 valve ports. The cylinder port is PT1/4. Note: the 5/2 valve routes air but does not hold loads without live pressure; for position holding consider SAIL or BSAI. For this 500 mm stroke, use a guide to prevent rod side-load damage. Replacement requires matching bore, stroke, port, voltage, entry, PT thread, and magnet (-S).
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 SAIF50X500-08B FAQ
The 50 mm bore generates 982 N push and 825 N pull at 0.5 MPa. The built-in 4M210-08 valve has a 16.0 mm2 effective area (Cv 0.89) and operates up to 5 cycles per second.
Yes, the factory setting retracts the rod when the DC24V coil is energised, but the valve can be repositioned to extend-when-energised. The integrated valve eliminates separate remote valves and tubing, enabling decentralized installation with one coil signal.
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