Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250S-06A
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250S-06A is a genuine double-acting profile-type cylinder with a Ø40mm bore, 250mm stroke and a built-in 4M210-06 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ40 mm
- Stroke250 mm
- Built-in valve4M210-06
- Valve port1/8"
- CoilAC220V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250S-06A
The SAUF40X250S-06A is an extruded aluminum profile cylinder with a built-in AirTAC 4M210-06 5/2 solenoid valve on the cap. One coil signal drives the actuator, eliminating remote plumbing and saving a manifold slot. The 40mm bore has a 1/4" cylinder port, a 16mm rod, and 21mm adjustable cushions. The S suffix means a piston magnet is present for CMSG/DMSG/EMSG switches.
The integrated valve has a 1/8" port, 14 mm2 flow (Cv 0.78), and cycles up to 5 times per second. The AC220V terminal-entry coil is IP65 rated. Size force within the 0.15-0.8 MPa valve window, not the 1.0 MPa cylinder body rating. At 0.5 MPa it pushes 628 N and pulls 528 N. The computed safe working load is roughly 377 N, and it can vertically lift about 32 kg with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250S-06A Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250S-06A |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | 1/4" |
| Rod thread | M12×1.25 |
| PU tube | Ø8 × Ø5 |
| Built-in valve | 4M210-06 (5/2) |
|---|---|
| Valve flow | 14.0 mm² (Cv 0.78) |
| 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 SAUF40X250S-06A
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×250 | Bore × stroke in mm. |
| -06 | Valve port 1/8" → 4M210-06. |
| 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 SAUF40X250S-06A Is Used
Decentralized Clamping
Ideal for a machining cell where each clamping station uses one coil signal to actuate independently, avoiding a central valve manifold.
Inline Diverting
Perfect for a conveyor diverter arm that needs self-contained switching at the point of action, reducing tubing runs across the frame.
Package Sorting Gate
Suits a decentralized sorting gate that cycles up to 5 times per second, saving manifold slots in a high-speed distribution hub.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250S-06A the Right Choice?
Select by sizing both ways: this 40mm bore delivers 628 N push at 0.5 MPa, sitting between the 50mm (982 N) and 32mm (402 N) options. Confirm the AC220V terminal entry and 1/8" valve port meet your supply. The rod retracts when the coil is energised, but you can reposition the valve to extend on signal. Always operate within the 0.15-0.8 MPa valve range. Because the valve only routes air, add an external rod lock or pilot-operated check valve to hold a load. For this 250mm stroke, use proper guiding to manage side loads.
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 SAUF40X250S-06A FAQ
It pushes 628 N and pulls 528 N at 0.5 MPa. The built-in valve is a 4M210-06 (1/8" port, Cv 0.78, 5 cycles/s max) driven by an AC220V terminal-entry coil. Although the cylinder body rates to 1.0 MPa, you must size force within the 0.15-0.8 MPa valve operating window.
By default the rod retracts when the coil is energised, but you can reposition the valve to make it extend on signal. The valve only routes air and is not a lock, so the piston will drift on air loss. Add an external rod lock or pilot-operated check valve for load holding.
Related AirTAC Cylinders & Valves
Request a Quote for Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250S-06A
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.