Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250S-08B is a genuine double-acting profile-type cylinder with a Ø50mm bore, 250mm 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.
- BoreØ50 mm
- Stroke250 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250S-08B
The SAUF50X250S-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 directly, eliminating remote plumbing and saving a manifold slot. The extruded aluminum barrel makes it shorter than an ISO 15552 cylinder of the same bore. The S suffix means a piston magnet is present for CMSG/DMSG/EMSG switches.
Operating within the 0.15-0.8 MPa valve window, this 50mm bore delivers 982N push and 825N pull at 0.5 MPa. The cylinder port is 1/4" and the valve port is 1/4" with a Cv of 0.89, cycling up to 5 times per second. Based on the 0.5MPa push force, the safe working load is about 589N, and it can vertically lift roughly 50kg with a 2:1 margin. The DC24V coil offers IP65 protection with terminal entry.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250S-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 250 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | 1/4" |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 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 SAUF50X250S-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 50×250 | 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 SAUF50X250S-08B Is Used
Diverter Gate Actuation
Decentralized sorting line diverter where the integrated valve removes the need to run long tubing back to a central manifold.
Clamp and Release Station
Independent machining clamps that require fast 5 cycle/sec switching directly at the point of operation without extra plumbing.
Package Push-off Mechanism
Compact ejection unit on a packaging conveyor, saving manifold space while providing 982N push force at 0.5 MPa.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250S-08B the Right Choice?
When sizing, compare this 50mm bore against the 40mm and 63mm neighbors. At 0.5 MPa the 40mm yields 628N push while the 63mm reaches 1559N. Confirm the DC24V terminal entry and PT threads match your supply. The rod retracts when energised by default, but you can reposition the valve to extend on signal. Size force strictly within the 0.15-0.8 MPa valve range, 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 250mm stroke, use proper guide rails to prevent 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 SAUF50X250S-08B FAQ
It delivers 982N push and 825N pull at 0.5 MPa, reaching 1570N push at 0.8 MPa. The built-in valve is a 4M210-08 with a 1/4" port and Cv 0.89. The DC24V coil operates at 0.15-0.8 MPa, so never size the assembled unit using the 1.0 MPa cylinder body rating.
Yes. The default action retracts the rod when energised, but you can reconfigure it to extend on signal by repositioning the built-in valve. This self-switching design means no remote valve is needed, though the valve only routes air and will not hold a load without an external check valve.
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