Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-06B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-06B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 125mm 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
- Stroke125 mm
- Built-in valve4M210-06
- Valve port1/8"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-06B
The SAUF40X125S-06B is a double-acting profile cylinder with a built-in AirTAC 4M210-06 5/2 solenoid valve on the cap. One DC24V coil signal drives the actuator, eliminating remote plumbing and saving a manifold slot. The hard-anodized aluminum barrel makes it shorter than an ISO 15552 unit of the same bore. The 125 mm stroke sits safely above the 50 mm SAUF minimum for this bore.
Operating strictly within the 0.15-0.8 MPa valve window, it delivers 628 N push and 528 N pull at 0.5 MPa. The 1/8" valve port flows 14 mm2 (Cv 0.78) at up to 5 cycles per second. For sizing, expect a safe working load around 377 N, or a 32 kg vertical lift with a 2:1 margin. The bore dictates a 1/4" cylinder port, and the S suffix provides a piston magnet for CMSG/DMSG/EMSG switches.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-06B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-06B |
|---|---|
| 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 | 4M210-06 (5/2) |
|---|---|
| Valve flow | 14.0 mm² (Cv 0.78) |
| 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 SAUF40X125S-06B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×125 | Bore × stroke in mm. |
| -06 | Valve port 1/8" → 4M210-06. |
| 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 SAUF40X125S-06B Is Used
Decentralized Clamping
Ideal for a machining cell where each clamping station uses its own SAUF cylinder, eliminating long tube runs back to a central manifold.
Inline Diverting
Perfect for a conveyor diverter gate that needs independent 5 cycle/sec actuation without dedicating a valve island slot.
Compact Package Stop
Fits neatly into tight packaging machinery as a product stop, using the built-in valve to save panel space and simplify wiring.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-06B the Right Choice?
Size against the 628 N push figure at 0.5 MPa: if your load exceeds the 377 N safe working threshold, step up to the 50 mm bore (982 N push). If the load is lighter and speed matters, the 32 mm bore offers 402 N. Confirm the DC24V terminal entry matches your control voltage. The rod retracts by default when energized, but you can reconfigure it to extend by repositioning the valve. Always size force within the 0.15-0.8 MPa valve range, not the 1.0 MPa cylinder body rating. The valve routes air and is not a lock; for load holding on air loss, add an external rod lock or pilot-operated check valve. For this 125 mm stroke, side-load is minimal, but always guide the rod for any stroke over 300 mm.
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 SAUF40X125S-06B 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/sec max) running on a DC24V terminal coil. You must size the force within the 0.15-0.8 MPa valve operating window, even though the cylinder body rates to 1.0 MPa.
By default, the rod retracts when the coil is energized. You can reconfigure it to extend-when-energized simply by repositioning the built-in valve. Because the valve only routes air, it is not a load lock; use an external rod lock or pilot-operated check valve if you need to hold a load against air loss.
Related AirTAC Cylinders & Valves
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