Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500S-08B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 500mm 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
- Stroke500 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500S-08B
The SAUF40X500S-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. It features a 1/4" cylinder port, a Ø16 mm rod, and an M12x1.25 rod-end thread.
Operating within the valve's 0.15-0.8 MPa range, this bore delivers 628 N push force at 0.5 MPa. The integrated valve provides a 1/4" port, 16 mm2 flow (Cv 0.89), and switches up to 5 cycles per second. The DC24V terminal coil is IP65 rated with a 0.05 s response time. For sizing, the safe working load is roughly 377 N, and vertical lift capacity is about 32 kg with a 2:1 margin. The S suffix indicates a piston magnet for CMSG/DMSG/EMSG switches.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500S-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAUF40X500S-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×500 | 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 SAUF40X500S-08B Is Used
Diverter Gate Actuation
Decentralized routing on a conveyor line. The integrated valve switches the 500 mm stroke directly at the diverter, eliminating long tube runs back to a central manifold.
Vertical Package Pusher
Pushing cartons on a packing line. The built-in 4M210-08 valve saves manifold space while providing 628 N of push force at 0.5 MPa for reliable sorting.
Independent Clamp Station
Remote clamping on a large welding fixture. One DC24V signal drives the clamp cylinder directly, reducing installation time and tubing complexity.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500S-08B the Right Choice?
Size force within the 0.15-0.8 MPa valve window. This 40 mm bore pushes 628 N at 0.5 MPa; if you need less force, drop to the 32 mm bore (402 N), or step up to the 50 mm bore (982 N) for more power. Confirm the DC24V terminal entry and PT threads match your supply. The rod retracts when the coil is energised, but you can reconfigure it to extend-when-energised by repositioning the valve. Because the valve only routes air, it is not a load lock—add an external rod lock or pilot-operated check valve to hold a load. For the 500 mm stroke, use external guides to prevent rod bending and side-load wear.
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 SAUF40X500S-08B FAQ
It generates 628 N push and 528 N pull at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/s max) driven by a DC24V terminal coil. Although the cylinder body rates to 1.0 MPa, the assembled unit operates at 0.15-0.8 MPa.
By default the rod retracts when the coil is energised, but you can reposition the valve to extend-when-energised. The 5/2 valve only routes air, so it is not a load lock. The piston will drift on air loss, so add an external rod lock or pilot-operated check valve for load holding.
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