Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X350S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X350S-08B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 350mm 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
- Stroke350 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X350S-08B
The SAUF40X350S-08B is a double-acting profile-type 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 in decentralized setups. The extruded aluminum barrel is shorter than an ISO 15552 cylinder of the same bore. This 40mm bore uses a 1/4" cylinder port, a Ø16mm rod with an M12x1.25 thread, and 21mm adjustable cushions. The -S suffix means a piston magnet is present for CMSG/DMSG/EMSG switches.
Operating within the 0.15-0.8 MPa valve window, it delivers 628N push and 528N pull at 0.5 MPa. The 4M210-08 valve port is 1/4" with a 16mm2 flow (Cv 0.89) and switches up to 5 cycles/sec. The DC24V coil offers IP65 protection with a 0.05s response. For sizing, the safe working load is roughly 377N (about 60% of the 628N push force), and it can vertically lift around 32kg with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X350S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X350S-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 350 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 SAUF40X350S-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×350 | 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 SAUF40X350S-08B Is Used
Decentralized Conveyor Divert
Mounts directly at the divert gate on a long conveyor line. The integrated DC24V valve switches the 350mm stroke locally, eliminating long tubing runs back to a central manifold.
Vertical Package Stopper
Acts as an elevating stop in a packing cell. The 40mm bore provides a safe working load of 377N, handling package impacts without needing a separate remote valve island.
Independent Clamping Station
Ideal for a standalone clamping fixture on a large machine bed. The built-in 4M210-08 valve uses one coil signal to drive the clamp, freeing up manifold slots for other actuators.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X350S-08B the Right Choice?
When sizing this model, compare it against neighbouring bores: a 32mm bore yields 402N push at 0.5 MPa, while a 50mm bore provides 982N. This 40mm bore gives 628N push and 528N pull at 0.5 MPa. Always size force within the built-in valve's 0.15-0.8 MPa working range, never the 1.0 MPa cylinder body rating. Confirm the DC24V terminal entry and PT threads suit your control panel. By default, the rod retracts when the coil is energised, but you can reposition the valve to extend on energisation. Because the 350mm stroke exceeds 300mm, add external guides to prevent rod bending and side-load wear. The valve only routes air; it is not a lock. For load holding on air loss, add an external rod lock or pilot-operated check valve.
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 SAUF40X350S-08B FAQ
It delivers 628N push and 528N pull at 0.5 MPa, reaching 1005N push at 0.8 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5/2 solenoid) running on DC24V. You must size the force within the valve's 0.15-0.8 MPa operating window, not the 1.0 MPa cylinder body rating.
By default, the rod retracts when the coil is energised. You can reconfigure it to extend-when-energised simply by repositioning the valve. The valve only routes air; it does not lock the load. If you need to hold a load during air loss, install an external rod lock or pilot-operated check valve.
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