Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08A
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08A 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"
- CoilAC220V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08A
The SAUF40X900S-08A is an extruded aluminum profile-type double-acting cylinder with a built-in AirTAC 4M210-08 5/2 solenoid valve on the cap. One AC220V coil signal drives the actuator, eliminating remote plumbing and saving a manifold slot. The cylinder body rates to 1.0 MPa, but the integrated valve restricts the assembled working pressure to 0.15-0.8 MPa. The cylinder air port is 1/4" and the valve port is 1/4".
At 0.5 MPa it delivers 628 N push and 528 N pull. This yields a safe working load around 377 N, with a vertical lift capacity near 32 kg at a 2:1 margin. The 4M210 valve flows 16 mm2 (Cv 0.89) and cycles up to 5 times per second. The -S suffix adds a piston magnet for position sensing. This 900 mm stroke exceeds 300 mm, so use external guides to prevent rod bending.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08A Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08A |
|---|---|
| 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 | AC220V · AC 3.5 VA |
| 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-08A
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×900 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| A | Coil voltage AC220V. |
| 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-08A Is Used
Sorting Diverter
Decentralized package sorting where one signal drives the 900 mm stroke to push parcels off the main belt without a remote valve bank.
Vertical Lift Gate
Independent lifting of access gates on a packaging line, saving manifold slots and tubing by using the built-in 4M210-08 valve.
Long-Reach Transfer
Moving components between machine stations over 900 mm, relying on the profile cylinder and external guides for stable horizontal transfer.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900S-08A the Right Choice?
When sizing, compare neighboring bores: the 32 mm bore pushes 402 N while the 50 mm bore pushes 982 N at 0.5 MPa. This 40 mm bore provides 628 N push and 528 N pull. Always size force within the 0.15-0.8 MPa valve window, never the 1.0 MPa cylinder body rating. Confirm the AC220V terminal entry and PT threads match your supply. The rod retracts when energized but can be reconfigured to extend by repositioning the valve. The valve only routes air; it is not a load lock. For vertical loads or air loss, add an external rod lock or pilot-operated check valve. At 900 mm stroke, external guides are essential to manage side-load and rod-bending forces.
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-08A FAQ
It pushes 628 N and pulls 528 N at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/s max). The coil is AC220V with terminal entry. Although the cylinder body rates to 1.0 MPa, the assembled unit operates strictly within 0.15-0.8 MPa.
No. The built-in 5/2 valve routes air but does not lock the piston. On air loss the rod drifts. For load holding, install an external rod lock or pilot-operated check valve. The default action retracts the rod when energized, but you can reposition the valve to extend on signal.
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