Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08B is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 300mm 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.
- BoreØ40 mm
- Stroke300 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08B
The AirTAC SAIF40X300-08B is a double-acting ISO 15552 profile cylinder featuring an integrated 4M210-08 5/2 solenoid valve. Driven by a DC24V terminal-connected coil drawing 3.0 W, it delivers a Cv of 0.89 and operates within a 0.15-0.8 MPa range. The 40mm bore generates 879N of push force at 0.7 MPa, while the carbon steel rod and PT1/4 cylinder port ensure robust performance.
By switching itself from a single coil signal, this unit eliminates remote valves and excess tubing, making it perfect for decentralized machine stations. The manifold utilizes an O8xO5 PU tube, and the factory default retracts the rod when energized, though you can reposition the valve to extend on signal. It responds in 0.05s with an IP65 rating.
Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 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 SAIF40X300-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 40×300 | 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 SAIF40X300-08B Is Used
Decentralized Stations
Ideal for large machinery where running individual valve tubing is costly, letting each station control itself locally.
Space-Tight Machines
Eliminates the need for a separate valve manifold, freeing up valuable panel and floor space in compact assemblies.
Retrofit Automation
Simplifies machine upgrades by integrating the 5/2 valve directly on the cylinder, minimizing new pneumatic plumbing.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF40X300-08B the Right Choice?
Choose this 40mm bore when you need more force than the 32mm variant (402N at 0.5 MPa) but want a smaller envelope than the 50mm option (982N at 0.5 MPa). A self-valved SAIF beats a separate cylinder and remote valve by saving panel space and wiring effort across decentralized installations. For load-holding applications, note that the 5/2 valve routes air but does not lock the load; consider SAIL or BSAI for clamp-lock requirements. Since the stroke is 300mm, ensure proper guide support to prevent rod side-loading. Replacement matches: 40mm bore, 300mm stroke, 1/4 valve port, DC24V, terminal entry, PT thread, no 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 SAIF40X300-08B FAQ
The 40mm bore generates 628N push and 528N pull at 0.5 MPa, or 879N push at 0.7 MPa. The built-in 4M210-08 valve provides an effective area of 16.0 mm2 (Cv 0.89) with a max frequency of 5 cycles/sec.
The DC24V coil draws 3.0 W and responds in 0.05s. By default, the rod retracts when energized, but you can reposition the valve to extend instead. This built-in 5/2 valve means no separate remote valve is required, saving tubing and space.
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