Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400S-08A
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400S-08A is a genuine double-acting profile-type cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke400 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400S-08A
The SAUF50X400S-08A is a double-acting profile-type cylinder featuring 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. The bore dictates a 1/4" cylinder port, while the valve port is also 1/4".
Operating within the 0.15-0.8 MPa valve window, it delivers 982 N push at 0.5 MPa. The valve flows 16 mm2 (Cv 0.89) at up to 5 cycles per second. The AC220V terminal coil is IP65 rated with a 0.05 s response. For sizing, expect a safe working load around 589 N, or a vertical lift capacity near 50 kg with a 2:1 margin. The S suffix indicates a piston magnet for CMSG/DMSG/EMSG switches.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400S-08A Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400S-08A |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 400 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | 1/4" |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 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 SAUF50X400S-08A
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 50×400 | 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 SAUF50X400S-08A Is Used
Decentralized Conveyor Divert
Mounts directly at the divert gate. The integrated valve eliminates long tube runs back to a central manifold, ensuring rapid 5 cycle/sec actuation for package sorting.
Independent Machine Clamp
Ideal for a standalone clamping station on a large machine. One AC220V signal controls the clamp without consuming a slot on the main valve island.
Vertical Lift Gate
Provides a safe 50 kg vertical lift capacity with a 2:1 margin. The built-in magnet allows position feedback for secure gate control in storage systems.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400S-08A the Right Choice?
When sizing, compare neighboring bores: a 40 mm bore yields 628 N push while a 63 mm bore yields 1559 N at 0.5 MPa. This 50 mm bore provides 982 N push and 825 N pull. Always size force within the 0.15-0.8 MPa assembled valve limit, never the 1.0 MPa cylinder body rating. Confirm the AC220V terminal entry and PT threads meet your electrical standards. By default the rod retracts when energized, but you can reposition the valve to extend on signal. Because the 400 mm stroke exceeds 300 mm, add external guides to prevent rod bending and side-load wear. The valve only routes air, so for load holding on air loss, install 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 SAUF50X400S-08A FAQ
It generates 982 N push and 825 N pull at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/sec max) driven by an AC220V terminal 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.
By default, the rod retracts when the coil is energized. You can reconfigure it to extend when energized simply by repositioning the built-in valve. This self-switching design means no remote valve is needed, though the valve only routes air and will not hold the load without an external rod lock.
Related AirTAC Cylinders & Valves
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