Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08A
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08A is a genuine double-acting profile-type cylinder with a Ø40mm bore, 300mm 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
- Stroke300 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08A
The SAUF40X300-08A 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 unit of the same bore. It uses a 1/4" cylinder port and an M12x1.25 rod thread.
Operating within the 0.15-0.8 MPa valve window, it delivers 628 N push and 528 N pull at 0.5 MPa. The 1/4" valve port flows 16 mm2 (Cv 0.89) at up to 5 cycles per second. This AC220V terminal-entry coil is IP65 rated. Since this 300 mm stroke lacks the -S magnet suffix, it cannot accept a magnetic switch. For sizing, the safe working load is about 377 N (60% of the 0.5 MPa push), allowing a 32 kg vertical lift with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08A Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08A |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 300 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 SAUF40X300-08A
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×300 | 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 SAUF40X300-08A Is Used
Conveyor Diverter Gate
Uses the integrated 4M210-08 valve to actuate a 300 mm diverter arm directly at the conveyor, eliminating long tubing runs back to a central manifold.
Decentralized Package Stopper
Deploys a 628 N push force at 0.5 MPa to halt cardboard cartons on a packing line, switching itself with one AC220V coil signal.
Independent Clamping Station
Clamps parts in a decentralized machining cell, saving manifold space by relying on the built-in 5/2 solenoid valve mounted on the cylinder cap.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08A the Right Choice?
When sizing, compare neighboring bores: the 32 mm bore yields 402 N push at 0.5 MPa, while the 50 mm bore provides 982 N. This 40 mm bore gives 628 N push and 528 N pull at 0.5 MPa. Always size force within the 0.15-0.8 MPa valve range, not the 1.0 MPa cylinder body rating. Confirm the AC220V terminal entry meets your control voltage. The rod retracts when the coil is energized; reposition the valve to switch to extend-when-energised. Because the 300 mm stroke exceeds 300 mm, use an external guide to prevent rod bending and side-load wear. The built-in valve routes air but does not hold the load on pressure loss—add an external rod lock or pilot-operated check valve for suspended loads.
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 SAUF40X300-08A FAQ
It delivers 628 N push and 528 N pull at 0.5 MPa. The built-in valve is a 4M210-08 5/2 solenoid with a 1/4" port, 16 mm2 flow (Cv 0.89), and a 5 cycle/s limit. The AC220V terminal-entry coil runs on an assembled pressure window of 0.15-0.8 MPa, even though the cylinder body rates to 1.0 MPa.
By default, the rod retracts when the coil is energized. You can reconfigure it to extend-when-energised simply by repositioning the built-in valve on the cap. This self-switching design means no remote valve is needed, though the valve only routes air and will not lock the load if air pressure is lost.
Related AirTAC Cylinders & Valves
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