Airtac SAIF Series Standard Cylinder with Valve SAIF50X400-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X400-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 400mm 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
- Stroke400 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X400-08B
The AirTAC SAIF50X400-08B is a double-acting ISO 15552 profile cylinder with a built-in 4M210-08 5/2 solenoid valve, delivering a 16.0 mm2 flow (Cv 0.89). Driven by a DC24V terminal entry coil drawing 3.0 W, it eliminates the need for a remote valve island. The cylinder body rates to 1.0 MPa, but because the integrated valve operates at 0.15-0.8 MPa, the practical working range for the assembled unit is 0.15-0.8 MPa. It delivers 982 N of push thrust at 0.5 MPa.
By default, the piston rod retracts when the coil is energised, but you can reposition the valve to extend-when-energised. The manifold connects to the cylinder using O8 x O5 PU tubing, meaning the 1/4" valve port differs from the 1/4" cylinder port. This self-switching design is ideal for decentralized machine stations, saving panel space and plumbing. It uses a carbon steel rod and PT tapered threads.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X400-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X400-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 400 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 SAIF50X400-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×400 | 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 SAIF50X400-08B Is Used
Decentralized Stations
Eliminates remote valve plumbing across large machines by switching itself from one DC24V signal.
Space-Tight Machines
The integrated 4M210 valve manifold saves panel space while delivering 982 N push force at 0.5 MPa.
Retrofit Installations
Ideal for upgrades where running new pneumatic tubing is costly; just wire the 3.0 W terminal coil.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X400-08B the Right Choice?
Choose this 50 mm bore when you need 982 N push force at 0.5 MPa; step down to a 40 mm bore for 628 N, or up to a 63 mm bore for 1559 N. A self-valved SAIF beats a separate cylinder and remote valve when space is tight and running tubing across a large machine is costly. Select this DC24V terminal coil for low-power 3.0 W integration and standard IP65 protection. The 400 mm stroke requires a side-load guide to prevent rod damage. To replace: match 50 mm bore, 400 mm stroke, 1/4" valve port, DC24V, terminal entry, PT threads, and no magnet. Note the 5/2 valve and air cushion decelerate the load but do not hold it without live pressure; use SAIL for locking.
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 SAIF50X400-08B FAQ
At 0.5 MPa, it provides 982 N push and 825 N pull thrust. The built-in 4M210-08 5/2 valve has a 16.0 mm2 effective area (Cv 0.89) and a max frequency of 5 cycles/sec.
No, it switches itself via the built-in valve from a single DC24V coil signal. Factory setting retracts the rod when energised, but it can be reconfigured to extend by repositioning the valve.
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