Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-08B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 125mm 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
- Stroke125 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-08B
The SAUF40X125-08B 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 actuator, eliminating remote plumbing and saving a manifold slot. The extruded aluminum barrel makes it shorter than an ISO 15552 unit of the same bore. It features a 1/4" valve port, a 1/4" cylinder port, and a M12x1.25 rod thread.
Operating strictly within the valve's 0.15-0.8 MPa window, it delivers 628 N push and 528 N pull at 0.5 MPa. The DC24V terminal entry coil offers IP65 protection and responds in 0.05 s or less. The 4M210 valve flows 16 mm2 (Cv 0.89) at up to 5 cycles per second. For sizing, the safe working load is roughly 377 N, and vertical lift capacity is about 32 kg with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 125 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 SAUF40X125-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×125 | 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 SAUF40X125-08B Is Used
Decentralized Conveyor Diverter
Mounts directly at the divert lane to push packages, removing the need to trace tubing back to a central manifold.
Independent Clamping Station
Provides single-signal clamping for a machining cell, freeing up valve island slots for other machine functions.
Modular Assembly Gantry
Ideal for distributed pick-and-place axes where local actuation simplifies machine wiring and reduces pneumatic lag.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-08B the Right Choice?
Size this 40 mm bore against its neighbours: a 32 mm bore yields 402 N push at 0.5 MPa, while a 50 mm bore provides 982 N. This model provides 628 N push and 528 N pull at 0.5 MPa. Confirm the DC24V terminal entry coil matches your supply. The rod retracts when energised but you can reposition the valve to extend on signal. Size force within the 0.15-0.8 MPa valve range, never the 1.0 MPa cylinder body rating. The valve routes air and is not a lock; add an external rod lock or pilot-operated check valve to hold loads. For this 125 mm stroke, side-load is minimal, but always guide the rod for stability. This SKU lacks a magnet and cannot take a sensor.
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 SAUF40X125-08B FAQ
It generates 628 N push and 528 N pull at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/sec max) driven by a DC24V terminal entry coil. You must size the force within the valve's 0.15-0.8 MPa operating window, even though the cylinder body rates to 1.0 MPa.
Yes. The default action retracts the rod when energised, but you can reposition the built-in valve on the cap to make the rod extend upon signal. Because the valve only routes air, you must add an external rod lock or pilot-operated check valve if you need to hold a load during air loss.
Related AirTAC Cylinders & Valves
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