Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400-08B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 400mm 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
- Stroke400 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400-08B
The SAUF40X400-08B 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 makes it shorter than an ISO 15552 cylinder of the same bore. This 40mm bore unit has a 1/4" cylinder port, a 16mm2 flow (Cv 0.89), and a 1/4" valve port. It switches up to 5 cycles per second.
Operating on DC24V with terminal entry, the coil is IP65 rated and responds in 0.05s or less. The cylinder body rates to 1.0MPa, but the integrated valve limits the assembled working pressure to 0.15-0.8MPa. At 0.5MPa it delivers 628N push and 528N pull. This yields a computed safe working load of about 377N, or a vertical lift capacity of roughly 32kg with a 2:1 margin. The 400mm stroke requires external guidance to prevent rod bending.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAUF40X400-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×400 | 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 SAUF40X400-08B Is Used
Diverter Gate Actuation
Drives a decentralized sorting flap directly at the conveyor lane, using the built-in valve to switch instantly without routing tubing back to a central manifold.
Package Push-off Station
Pushes cartons off a roller line with a 628N push force at 0.5MPa, saving installation time by integrating the 4M210 valve directly on the cylinder cap.
Independent Clamp Module
Secures a workpiece in a multi-station fixture where a single coil signal per clamp is more reliable than a complex remote valve bank.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X400-08B the Right Choice?
Size by checking both neighboring bores: the 32mm bore offers 402N push at 0.5MPa, while the 50mm bore provides 982N, so this 40mm bore at 628N is a solid mid-range choice. Confirm the DC24V terminal entry and PT threads match your control scheme. The default action retracts the rod when energized, but you can reconfigure it to extend by repositioning the valve. Always size force within the 0.15-0.8MPa valve window, never the 1.0MPa cylinder body rating. Because the 400mm stroke exceeds 300mm, add external guides to handle side loads and prevent rod bending. The valve only 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 the S magnet suffix and cannot take a magnetic switch.
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 SAUF40X400-08B FAQ
It generates 628N push and 528N pull at 0.5MPa. The built-in valve is a 4M210-08 (5/2 solenoid) with a 1/4" port, Cv 0.89, and 16mm2 flow. The coil is DC24V with terminal entry. Although the cylinder body rates to 1.0MPa, the assembled unit must operate within the 0.15-0.8MPa valve window.
Yes. The default action retracts the rod when energized, but you can reposition the valve on the cap to make it extend when energized. This self-switching design means you need only one coil signal per actuator and no remote valve.
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