Airtac SAUF Series Valve-Mounted Air Cylinder SAUF80X250-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF80X250-08B is a genuine double-acting profile-type cylinder with a Ø80mm bore, 250mm stroke and a built-in 4M310-08 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ80 mm
- Stroke250 mm
- Built-in valve4M310-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF80X250-08B
The SAUF80X250-08B is a double-acting profile cylinder with a built-in AirTAC 4M310-08 5/2 solenoid valve on the cap. One coil signal drives the actuator, eliminating remote plumbing and saving a manifold slot in large machines. The extruded aluminum barrel makes it shorter than a standard ISO 15552 cylinder of the same bore. It features a 3/8 inch cylinder port, an M20x1.5 rod thread, and 28mm adjustable cushions.
Size force strictly within the 0.15-0.8 MPa valve operating window, even though the cylinder body rates to 1.0 MPa. At 0.5 MPa it delivers 2513 N push and 2268 N pull. A practical computed insight gives a safe working load of roughly 1508 N, or a vertical lift capacity of about 128 kg with a 2:1 margin. The integrated valve flows 25 mm2 (Cv 1.4) through a 1/4 inch port and handles up to 4 cycles per second. This DC24V terminal-entry coil is IP65 rated and uses Ø10xØ6.5 PU tubing. Since this SKU lacks the S suffix, it cannot accept a magnetic switch.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF80X250-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF80X250-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø80 mm |
| Stroke | 250 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | 3/8" |
| Rod thread | M20×1.5 |
| PU tube | Ø10 × Ø6.5 |
| Built-in valve | 4M310-08 (5/2) |
|---|---|
| Valve flow | 25.0 mm² (Cv 1.40) |
| Max frequency | 4 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 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 SAUF80X250-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 80×250 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M310-08. |
| 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 SAUF80X250-08B Is Used
Inline Divert Gate
Acts as a standalone diverter on a long conveyor. The built-in valve means only one electrical signal is needed at that remote station, eliminating a long pneumatic hose run back to a central manifold.
Decentralized Pallet Stop
Functions as a pallet stop in a large warehouse. Mounting it directly at the station saves manifold slots and simplifies tubing, using the 4M310-08 valve to cycle the 80mm bore rapidly.
Machine Guard Flap
Operates an access flap on a large machine. The compact profile cylinder fits tight machine frames, and the integrated 5/2 valve ensures immediate local response without delayed air delivery from a remote bank.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF80X250-08B the Right Choice?
When sizing, compare both directions: this 80mm bore gives 2513 N push and 2268 N pull at 0.5 MPa, while the neighbouring 63mm bore gives 1559 N push. Always confirm the DC24V terminal entry and PT threads match your control setup. The default action retracts the rod when the coil is energised, but you can reposition the valve to extend on energisation. Remember the assembled unit operates at 0.15-0.8 MPa, not the 1.0 MPa cylinder body limit. The valve only routes air, so for load holding on air loss add an external rod lock or pilot-operated check valve. For this 250mm stroke, ensure adequate side-load guidance to prevent rod binding.
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 SAUF80X250-08B FAQ
It pushes 2513 N and pulls 2268 N at 0.5 MPa, reaching 4021 N push at 0.8 MPa. The built-in valve is a 4M310-08 5/2 solenoid with 1/4 inch port, Cv 1.4, and 4 cycles/s max. The DC24V coil runs the assembled unit within a 0.15-0.8 MPa window, despite the 1.0 MPa cylinder body rating.
Yes, you can reposition the built-in valve to extend when energised instead of retract. The valve only routes air; it is not a lock. If power or air is lost, the piston drifts and the cushion only decelerates near stroke end, so add an external rod lock or pilot-operated check valve for load holding.
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