Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08B 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"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08B
The SAUF40X300S-08B 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, eliminating remote plumbing and saving a manifold slot. The extruded aluminum barrel makes it shorter than an ISO 15552 cylinder of the same bore. A piston magnet is included for position sensing.
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 a 0.15-0.8MPa working window. For sizing, expect a safe working load around 377N (about 60% of the 0.5MPa push force) or a 32kg vertical lift with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08B |
|---|---|
| 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 | 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 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-08B
| SAUF | Profile 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. |
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-08B Is Used
Inline Diverter Gate
Switches a sorting flap directly on the conveyor frame without routing air lines back to a central manifold.
Independent Clamp Station
Holds a workpiece in a multi-station fixture using one DC24V signal, freeing up valve island slots.
Decentralized Package Stopper
Raises and lowers a package stop arm on a packing line, minimizing tubing complexity across the machine.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300S-08B the Right Choice?
Size between the 32mm bore (402N push at 0.5MPa) and the 50mm bore (982N push at 0.5MPa). This 40mm bore provides 628N push at 0.5MPa. Always size force within the 0.15-0.8MPa valve pressure window, never the 1.0MPa cylinder body rating. The DC24V coil uses terminal entry. The rod retracts when energised but can be reconfigured to extend by repositioning the valve. The valve routes air and is not a load lock; add an external rod lock or pilot-operated check valve to hold a load. For the 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-08B FAQ
It generates 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) with a DC24V coil. Although the cylinder body rates to 1.0MPa, the assembled unit operates strictly within a 0.15-0.8MPa window. The 1/4" cylinder port and M12x1.25 rod thread are fixed by the 40mm bore.
No, the built-in valve routes air and is not a load lock; the piston drifts on air loss. Add an external rod lock or pilot-operated check valve for load holding. By default the rod retracts when the coil is energised, but you can reposition the valve to make it extend when energised.
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