Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-08A
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-08A is a genuine double-acting profile-type cylinder with a Ø40mm bore, 250mm 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
- Stroke250 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-08A
The SAUF40X250-08A is a double-acting profile cylinder with a built-in AirTAC 4M210-08 5/2 solenoid valve on the cap. One AC220V 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. It features a 1/4" cylinder port, an M12x1.25 rod thread, and 21mm adjustable cushions.
Operating within the 0.15-0.8 MPa valve window, it delivers 628N push and 528N pull at 0.5 MPa. The 1/4" valve port gives a 16mm2 flow (Cv 0.89) and handles 5 cycles/sec. For sizing, the safe working load is roughly 377N, and it can vertically lift about 32kg with a 2:1 margin. This terminal-entry, PT-thread SKU lacks a magnet (-S), so it cannot accept a magnetic switch.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-08A Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-08A |
|---|---|
| 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 | 4M210-08 (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 SAUF40X250-08A
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×250 | 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 SAUF40X250-08A Is Used
Conveyor Diverter Gate
Decentralized diverter on a packaging line. The integrated 4M210-08 valve switches the 250mm stroke directly at the gate without tubing back to a main manifold.
Component Pusher Station
Pushing parts into a test fixture. One AC220V signal extends or retracts the 40mm bore, saving installation time and manifold space on a crowded machine.
Warehouse Sortation Arm
Independent sortation arm running at 5 cycles/sec. The built-in valve handles the 1/4" port flow locally, ensuring rapid response without remote valve delays.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-08A the Right Choice?
When sizing, compare neighbours: a 32mm bore offers 402N push at 0.5MPa, while a 50mm bore gives 982N. This 40mm bore provides 628N push. Always confirm the AC220V terminal entry matches your control voltage. The default action retracts the rod when energised, but you can reconfigure it to extend by repositioning the valve. Size force strictly within the 0.15-0.8 MPa valve range, not the 1.0 MPa cylinder body rating. Because the built-in valve only routes air, add an external rod lock or pilot-operated check valve to hold loads safely. For this 250mm stroke, ensure adequate side-load guidance.
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 SAUF40X250-08A FAQ
It delivers 628N push and 528N pull at 0.5MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/sec) driven by an AC220V terminal-entry coil. Although the cylinder body rates to 1.0MPa, the assembled unit must operate within the 0.15-0.8MPa valve window.
The valve routes air but is not a lock, so the piston drifts on air loss. Add an external rod lock or pilot-operated check valve for holding. By default the rod retracts when energised, but you can reposition the valve to extend-when-energised. Also, this SKU lacks a magnet and cannot take a sensor.
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