Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X225S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X225S-08B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 225mm 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
- Stroke225 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X225S-08B
The SAUF40X225S-08B is a double-acting profile cylinder with a built-in AirTAC 4M210-08 5/2 solenoid valve on the cap. One coil signal drives the cylinder, saving a manifold slot and tubing for decentralized setups. The extruded aluminum barrel is shorter than an ISO 15552 cylinder of the same bore. This 40mm bore has a 1/4" air port, a 16mm rod, and an M12x1.25 rod thread.
The integrated valve delivers a 1/4" port, 16mm2 flow (Cv 0.89), and runs up to 5 cycles/sec. The DC24V coil offers IP65 protection with a 0.05s response. 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 628N and pulls 528N. A safe working load is roughly 377N, allowing a vertical lift of about 32kg with a 2:1 margin. The S suffix means a piston magnet is present for CMSG/DMSG/EMSG switches.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X225S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X225S-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 225 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 | 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 (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 SAUF40X225S-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×225 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| 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 SAUF40X225S-08B Is Used
Conveyor Diverter Gate
Uses the self-contained 4M210-08 valve to actuate a diverter arm directly at the conveyor lane, eliminating long tubing runs back to a central manifold.
Decentralized Clamping Station
Ideal for a machining cell where the DC24V coil triggers a 225mm stroke clamp, saving a valve island slot while providing 628N of clamping force at 0.5 MPa.
Package Pusher Mechanism
Pushes cartons on a packing line using a single electrical signal, with the integrated magnet allowing position confirmation via CMSG reed switches.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X225S-08B the Right Choice?
Compare this 40mm bore (628N push at 0.5 MPa) against the 32mm (402N) or 50mm (982N) neighbors to match your load. The DC24V terminal entry and PT thread are fixed in this SKU. The built-in valve limits operation to 0.15-0.8 MPa, so never size using the 1.0 MPa cylinder body rating. The rod retracts when the coil is energized, but you can reposition the valve to extend-when-energized. Because the valve only routes air, add an external rod lock or pilot-operated check valve to hold a load. For this 225mm stroke, use SC-series mounts and guide the load to prevent side-load wear.
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 SAUF40X225S-08B FAQ
It delivers 628N push and 528N pull at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5/2 solenoid) running on DC24V. Although the cylinder body rates to 1.0 MPa, the assembled unit must operate within the valve's 0.15-0.8 MPa window.
By default the rod retracts when the coil is energized, but you can reposition the valve to extend-when-energized. The valve only routes air, so it is not a load lock; the piston will drift on air loss. Use an external rod lock or pilot-operated check valve for load holding.
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