Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 900mm 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
- Stroke900 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08B
The AirTAC SAUF40X900S-08B is a double-acting profile cylinder with a built-in 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. This 40mm bore unit has a 1/4" cylinder port, an M12x1.25 rod thread, and a 900mm stroke.
Operating within the 0.15-0.8 MPa valve window, it pushes 628N and pulls 528N at 0.5 MPa. The integrated valve flows 16 mm2 (Cv 0.89) at up to 5 cycles/sec. The DC24V coil offers IP65 protection with a 0.05s response. For sizing, the safe working load is roughly 377N (about 60% of the 0.5 MPa push), yielding a 32kg vertical lift capacity with a 2:1 margin. The -S suffix provides a piston magnet for CMSG/DMSG/EMSG switches.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 900 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 SAUF40X900S-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×900 | 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 SAUF40X900S-08B Is Used
Sorting Diverter
Decentralized diverter gate on a high-speed conveyor. The built-in valve handles 5 cycles/sec without needing a remote manifold.
Vertical Lift Gate
Raising a 32kg access panel. The integrated DC24V coil simplifies wiring while providing 628N push at 0.5 MPa.
Long-Reach Pusher
Ejecting parts on a 900mm stroke. External guides manage the side-load while the profile barrel saves machine space.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08B the Right Choice?
Size by checking both neighbors: the 32mm bore yields 402N push at 0.5 MPa, while the 50mm bore provides 982N. This 40mm bore fits applications needing 628N push. Confirm the DC24V terminal entry and PT threads match your supply. Default action retracts the rod when energized, but you can reposition the valve to extend on signal. Always size force within the 0.15-0.8 MPa valve range, not the 1.0 MPa cylinder body rating. Because the 900mm stroke exceeds 300mm, add external guides to prevent rod bending and side-load wear. The valve routes air; it is not a lock, so add an external rod lock or pilot-operated check valve to hold loads safely.
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 SAUF40X900S-08B FAQ
It pushes 628N and pulls 528N at 0.5 MPa. The built-in valve is a 4M210-08 (Cv 0.89, 16 mm2 flow) running on DC24V. Although the cylinder body rates to 1.0 MPa, the assembled unit must operate within the 0.15-0.8 MPa valve window.
Yes. The default action retracts the rod when energized, but you can reposition the built-in valve on the cap to make the rod extend on signal. This allows flexible decentralized control without extra remote plumbing.
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