Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900-08B 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 SAUF40X900-08B
The SAUF40X900-08B is a double-acting profile cylinder with a built-in AirTAC 4M210-08 5/2 solenoid valve on the cap. One DC24V 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. It uses a 1/4" valve port and Ø8xØ5 PU tubing.
Operating within the 0.15-0.8 MPa valve window, this 40mm bore delivers 628N push and 528N pull at 0.5 MPa. The valve flows 16 mm2 (Cv 0.89) at up to 5 cycles/s. The cylinder port is 1/4" with an M12x1.25 rod thread. Computed buyer insight: safe working load is roughly 377N (60% of the 0.5 MPa push), allowing a vertical lift of about 32kg with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900-08B |
|---|---|
| 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 SAUF40X900-08B
| 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 SAUF40X900-08B Is Used
Long-stroke diverter
Uses the 900mm extension to push parcels across a wide conveyor belt without running long remote air lines to a central manifold.
Decentralized clamp
Mounts directly on a large welding fixture to actuate a clamp via one DC24V signal, saving manifold space and tubing.
Vertical lift gate
Lifts a 32kg access panel using the integrated 4M210 valve, keeping the installation compact and easy to maintain.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X900-08B the Right Choice?
Size by checking both neighboring bores: the 32mm bore yields 402N push while the 50mm bore yields 982N push at 0.5 MPa. This 40mm bore provides 628N push, so verify your load fits the 377N safe working recommendation. Confirm the DC24V terminal entry and PT thread meet your control specs. The cylinder body rates to 1.0 MPa, but you must size force within the 0.15-0.8 MPa valve limit. Default action retracts the rod when energized; reposition the valve to extend on signal. Because this is a 900mm stroke, use external guides to prevent rod bending and side-load wear. 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. 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 SAUF40X900-08B FAQ
It delivers 628N push and 528N pull 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 in the 0.15-0.8 MPa valve window.
Yes, the default action retracts the rod on signal, but you can reposition the valve to extend when energized. The valve only routes air; it is not a load lock. For load holding on air loss, add an external rod lock or pilot-operated check valve.
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