Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400S-08B is a genuine double-acting profile-type cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke400 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400S-08B
The SAUF40X400S-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. This 40mm bore unit has a 1/4" cylinder port and a 400mm stroke.
Operating within the valve's 0.15-0.8 MPa range, it delivers 628N push and 528N pull at 0.5 MPa. The DC24V terminal entry coil is IP65 rated and the valve flows 16 mm2 (Cv 0.89) at up to 5 cycles per second. The S suffix denotes a piston magnet for CMSG/DMSG/EMSG switches. For sizing, a safe working load is roughly 377N, translating to a vertical lift capacity of about 32kg with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400S-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAUF40X400S-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×400 | 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 SAUF40X400S-08B Is Used
Conveyor Diverter Gate
Mounts directly at the divert station to push packages without routing air lines back to a central manifold.
Independent Clamping Station
Provides single-signal clamping on a large welding fixture, freeing up valve manifold slots for other actuators.
Decentralized Carton Stopper
Installs as a standalone stopper on a packaging line, reducing tubing complexity and accelerating assembly.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400S-08B the Right Choice?
Size this 40mm bore against the neighbouring 32mm and 50mm options. At 0.5 MPa it provides 628N push versus 402N for the 32mm, while the 50mm offers 982N. Confirm the DC24V terminal entry coil matches your supply. The default action retracts the rod when energised, but you can reconfigure it to extend-when-energised by repositioning the valve. Always size force within the 0.15-0.8 MPa valve window, not the 1.0 MPa cylinder body rating. The built-in valve routes air and is not a load lock; for held loads add an external rod lock or pilot-operated check valve. Because the 400mm stroke exceeds 300mm, use an external guide to prevent rod bending and side-load damage.
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 SAUF40X400S-08B FAQ
It generates 628N push and 528N pull at 0.5 MPa. The built-in valve is a 4M210-08 (5/2 solenoid) with 1/4" port, 16 mm2 flow (Cv 0.89), and a DC24V terminal entry coil. The cylinder body rates to 1.0 MPa, but you must size force within the valve's 0.15-0.8 MPa operating window.
Yes. The default action retracts the rod upon energising, but you can reposition the valve to make it extend-when-energised. This self-switching design means one coil signal drives the cylinder without needing a separate remote valve.
Related AirTAC Cylinders & Valves
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