Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50S-08A
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50S-08A is a genuine double-acting profile-type cylinder with a Ø40mm bore, 50mm 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
- Stroke50 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50S-08A
The AirTAC SAUF40X50S-08A is a double-acting profile cylinder with a built-in 4M210 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 a standard ISO cylinder of the same bore. The bore sets the 1/4" cylinder port, while the valve port is 1/4".
Size force within the 0.15-0.8 MPa valve window. At 0.5 MPa it delivers 628 N push and 528 N pull. This yields a safe working load of roughly 377 N, or a vertical lift capacity of about 32 kg with a 2:1 margin. The AC220V terminal coil is IP65 rated, and the -S suffix provides a piston magnet for CMSG/DMSG/EMSG switches. The 4M210-08 valve flows 16 mm2 (Cv 0.89) at up to 5 cycles per second.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50S-08A Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50S-08A |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 50 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 | 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 (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 SAUF40X50S-08A
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×50 | 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 SAUF40X50S-08A Is Used
Decentralized Clamping
Ideal for a machining cell where each clamping station uses one coil signal to actuate independently without a central valve manifold.
Inline Diverter Gate
Perfect for a conveyor diverter that needs a self-contained actuator; the integrated valve minimizes tubing across the frame.
Independent Pick and Place
Suits a small pick-and-place unit where mounting a separate valve is impractical, letting the cylinder switch itself directly.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50S-08A the Right Choice?
When sizing, compare neighboring bores: the 32 mm bore pushes 402 N while the 50 mm bore pushes 982 N at 0.5 MPa. This 40 mm bore provides 628 N push at 0.5 MPa. Confirm the AC220V terminal entry and PT thread meet your electrical specs. The rod retracts when the coil is energized, but you can reposition the valve to extend on energization. Always operate within the 0.15-0.8 MPa valve range, not the 1.0 MPa cylinder body rating. The built-in valve routes air and is not a lock; for load holding on air loss, add an external rod lock or pilot-operated check valve. For this 50 mm stroke, side-load guides are less critical but ensure proper alignment.
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 SAUF40X50S-08A FAQ
It pushes 628 N and pulls 528 N at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/sec max). The coil is AC220V with a terminal entry. Size the force within the 0.15-0.8 MPa valve operating window, even though the cylinder body rates to 1.0 MPa.
Yes. The default action retracts the rod on energization, but you can reconfigure it to extend when energized by repositioning the built-in valve. Because the valve only routes air, it is not a load lock; use an external rod lock or pilot-operated check valve if you need to hold a load on air loss.
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