Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X800S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X800S-08B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 800mm 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
- Stroke800 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X800S-08B
The SAUF40X800S-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 is shorter than an ISO 15552 unit of the same bore. This DC24V terminal-entry version includes a piston magnet for switch sensing.
Size force within the 0.15-0.8 MPa valve window, even though the cylinder body rates to 1.0 MPa. At 0.5 MPa it delivers 628 N push and 528 N pull. A practical computed insight: safe working load is roughly 377 N, and vertical lift capacity is about 32 kg with a 2:1 margin. The 1/4" valve port yields a 16 mm2 flow (Cv 0.89) at up to 5 cycles per second, while the cylinder port is 1/4".
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X800S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X800S-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAUF40X800S-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×800 | 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 SAUF40X800S-08B Is Used
Decentralized Conveyor Divert
Mounts directly at the divert gate to push packages locally, needing only one electrical signal and no long tubing runs back to a central manifold.
Remote Machine Gating
Ideal for large machine frames where routing air lines is costly, using the integrated 4M210 valve to actuate safety gates independently.
Vertical Material Lift
Handles vertical lifting up to 32 kg with a 2:1 safety factor at 0.5 MPa, with the built-in magnet allowing precise end-of-stroke detection.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X800S-08B the Right Choice?
When sizing, compare both directions: this 40 mm bore gives 628 N push and 528 N pull at 0.5 MPa, whereas a 32 mm bore offers 402 N push and a 50 mm bore provides 982 N push. Confirm the DC24V coil, terminal entry, and PT thread before ordering. The rod retracts when energised by default, but you can reposition the valve to extend on signal. Always operate within the 0.15-0.8 MPa valve range, never the 1.0 MPa cylinder maximum. The built-in valve routes air and is not a lock; add an external rod lock or pilot-operated check valve for load holding. For this 800 mm stroke, use external guides 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 SAUF40X800S-08B FAQ
It generates 628 N push and 528 N pull at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/sec max) running on a DC24V coil. Although the cylinder body rates to 1.0 MPa, you must size force within the assembled valve's 0.15-0.8 MPa operating window.
Yes. The default action retracts the rod upon energising, but you can reconfigure it to extend-when-energised simply by repositioning the valve on the cap. This self-switching design removes the need for a remote valve while maintaining full double-acting control.
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