Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08A
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08A is a genuine double-acting profile-type 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"
- CoilAC220V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08A
The SAUF40X300S-08A is a double-acting profile cylinder with a built-in AirTAC 4M210-08 5/2 solenoid valve on the cap. One coil signal drives the actuator, saving tubing and a manifold slot in decentralized setups. The extruded aluminum barrel is shorter than an ISO 15552 cylinder of the same bore. The S suffix means a piston magnet is present for CMSG/DMSG/EMSG switches.
The 40mm bore delivers 628N push and 528N pull at 0.5MPa. The integrated valve has a 1/4" port, 16mm2 flow (Cv 0.89), and handles 5 cycles/sec. The cylinder body rates to 1.0MPa but the valve limits the assembled unit to 0.15-0.8MPa. Computed insight: safe working load is 377N (60% of the 628N push force), offering a vertical lift capacity of about 32kg with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08A Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08A |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | 1/4" |
| 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 | AC220V · AC 3.5 VA |
| 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 SAUF at 0.15–0.8 MPa. Default: rod retracts when the coil is energised (reconfigurable to extend). Specs follow the official AirTAC SAUF 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 SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08A
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×300 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| A | Coil voltage AC220V. |
| I / (blank) | Terminal electrical entry. |
SAUF does not hold its load without air — the valve routes air, it is not a lock. For a held load, add an external rod lock or a pilot-operated check valve.
Where the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08A Is Used
Diverter Gate Actuation
Uses the integrated 4M210-08 valve to switch a sorting flap directly at the conveyor, eliminating long tube runs back to a central manifold.
Decentralized Pallet Stop
Raises and lowers a pallet stop in a storage lane with a single AC220V signal, saving a valve island slot on the main control panel.
Independent Clamp Station
Clamps parts at a machining cell using local switching, allowing the 40mm bore to cycle at up to 5 cycles/sec without pneumatic lag.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08A the Right Choice?
Size force within the 0.15-0.8MPa valve window: this 40mm bore gives 628N push at 0.5MPa, sitting between the 32mm (402N) and 50mm (982N) options. The coil is AC220V with terminal entry. Default action retracts the rod when energised; reposition the valve to extend on energisation. The cylinder port is 1/4" and the rod thread is M12x1.25. The built-in valve routes air but is not a lock; add an external rod lock or pilot-operated check valve to hold loads on air loss. For this 300mm stroke, use external guides to prevent rod bending and side-load wear.
Quick checklist
- ✓ Force at 0.15–0.8 MPa
- ✓ Coil voltage matches panel
- ✓ Terminal vs grommet entry
- ✓ Retract- or extend-when-energised
- ✓ Load-holding → external rod lock
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08A FAQ
It delivers 628N push and 528N pull at 0.5MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/sec) driven by an AC220V terminal-entry coil. Although the cylinder body rates to 1.0MPa, the assembled SAUF must operate in the 0.15-0.8MPa valve window.
Yes. The default action retracts the rod when the coil is energised. You can reconfigure it to extend-when-energised simply by repositioning the built-in valve on the cap. Note that the valve only routes air; it does not lock the load.
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