Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-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 SAUF40X125S-08B
The SAUF40X125S-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 is shorter than an ISO 15552 cylinder of the same bore. The S suffix means a piston magnet is present for CMSG/DMSG/EMSG switches.
The 40mm bore delivers 628N push and 528N pull at 0.5MPa. The integrated valve has a 1/4" port, 16mm2 flow (Cv 0.89), and handles 5 cycles/sec. The cylinder body rates to 1.0MPa, but size force within the valve's 0.15-0.8MPa window. Computed buyer insight: safe working load is roughly 377N (60% of the 0.5MPa push force), and vertical lift is about 32kg with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-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 SAUF40X125S-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 SAUF40X125S-08B Is Used
Decentralized Clamping
Ideal for a clamping station where the integrated valve lets one DC24V signal actuate the clamp without running tubes back to a central manifold.
Inline Diverters
Perfect for a conveyor diverter gate; the built-in 4M210-08 valve switches the 125mm stroke directly at the actuator, saving manifold space.
Compact Assembly Stations
Fits assembly cells needing a 628N push, where the profile barrel saves machine length and the magnetic piston enables position sensing.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-08B the Right Choice?
Size against the 32mm and 50mm neighbours: this 40mm bore gives 628N push at 0.5MPa, sitting between the 32mm (402N) and 50mm (982N) options. Confirm the DC24V coil, terminal entry, and PT thread suit your control panel. The default action retracts the rod when energised; reposition the valve to extend on energise. Keep operating pressure between 0.15-0.8MPa. The built-in valve routes air and is not a lock, so add an external rod lock or pilot-operated check valve to hold a load. For this 125mm stroke, side-load is minimal, but always guide the rod for longer travels.
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-08B 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) running on DC24V. Although the cylinder body rates to 1.0MPa, the assembled unit operates at 0.15-0.8MPa.
Yes. The default action retracts the rod when energised, but you can reposition the valve on the cap to make it extend on energise. This self-switching design means no remote valve is needed.
Related AirTAC Cylinders & Valves
Request a Quote for Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125S-08B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.