Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08B 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"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08B
The AirTAC SAUF40X300-08B 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 in decentralized setups. The extruded aluminum barrel makes it shorter than an ISO 15552 unit of the same bore. It features a 1/4" cylinder port, an M12x1.25 rod thread, and 21mm adjustable cushions.
Operating within the valve's 0.15-0.8 MPa range, this bore delivers 628N push and 528N pull at 0.5 MPa. The integrated 4M210 valve flows 16mm2 (Cv 0.89) at up to 5 cycles/sec. The DC24V terminal coil offers IP65 protection with a 0.05s response. For sizing, the safe working load is roughly 377N, and it can vertically lift about 32kg with a 2:1 margin. This SKU lacks a magnet, so it cannot accept magnetic switches.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08B |
|---|---|
| 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 | 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 SAUF40X300-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×300 | 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 SAUF40X300-08B Is Used
Conveyor Diverter Gate
Decentralized diverter on a packaging line. The built-in valve means one DC24V signal actuates the gate directly, cutting tubing runs to a central manifold.
Independent Clamp Station
A standalone clamping fixture on a large machine bed. The integrated 4M210 valve saves manifold space and simplifies pneumatic plumbing for single-actuator zones.
Vertical Parts Lift
Lifting 20kg product trays. The 40mm bore handles the 32kg vertical lift capacity safely, with the self-contained valve ensuring rapid local response.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X300-08B the Right Choice?
Size force between the 32mm bore (402N push) and 50mm bore (982N push) neighbors. This 40mm bore provides 628N push at 0.5 MPa. Confirm the DC24V terminal coil and PT threads suit your control panel. The rod retracts when energized by default, but you can reposition the valve to extend on signal. Always size within the 0.15-0.8 MPa valve window, not the 1.0 MPa cylinder body rating. Because the valve only routes air, add an external rod lock or pilot-operated check valve to hold loads safely. For this 300mm stroke, use external guides to prevent rod bending and side-load wear. Use SC-series accessories for mounting.
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 SAUF40X300-08B FAQ
It generates 628N push and 528N pull at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/sec max) driven by a DC24V terminal coil. Although the cylinder body rates to 1.0 MPa, you must size force within the valve's 0.15-0.8 MPa operating window.
By default the rod retracts when the coil is energized, but you can reposition the valve to extend on signal. The 5/2 valve only routes air; it is not a load lock. The piston will drift on air loss, so install an external rod lock or pilot-operated check valve for load holding.
Related AirTAC Cylinders & Valves
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