Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125-08B is a genuine double-acting profile-type cylinder with a Ø50mm bore, 125mm 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
- Stroke125 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125-08B
The SAUF50X125-08B 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 cylinder, 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 uses a 1/4" cylinder port with an M16x1.5 rod thread.
Operating within the 0.15-0.8 MPa valve window, it delivers 982 N push at 0.5 MPa. The DC24V terminal entry coil offers IP65 protection and a 0.05 s response. The 4M210-08 valve flows 16 mm2 (Cv 0.89) at up to 5 cycles/s. For sizing, the safe working load is roughly 589 N (60% of the 0.5 MPa push), allowing a 50 kg vertical lift with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 125 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 SAUF50X125-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 50×125 | 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 SAUF50X125-08B Is Used
Decentralized Clamping
Ideal for a machining cell where each clamping actuator switches itself from one local coil signal, saving tubing back to a main manifold.
Inline Divert Gate
Operates a short-stroke divert gate on a conveyor. The integrated valve means only a single air supply and DC24V wire are routed to the station.
Package Stopper
Acts as a localized package stop in a high-speed sorter. The 4M210-08 valve handles 5 cycles/s, keeping pace with decentralized logistics lines.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125-08B the Right Choice?
Size by checking both neighbouring bores: the 40 mm bore yields 628 N push at 0.5 MPa, while the 63 mm bore provides 1559 N. This 50 mm bore gives 982 N push and 825 N pull at 0.5 MPa. Confirm the DC24V terminal entry coil matches your supply. The rod retracts when energised but can be reconfigured to extend by repositioning the valve. Size force strictly within the 0.15-0.8 MPa valve range, not the 1.0 MPa cylinder body rating. This SKU lacks a magnet and cannot take a sensor. The valve routes air and is not a lock; for load holding add an external rod lock or pilot-operated check valve. For this 125 mm stroke, side-load is minimal, but always guide the load for strokes over 300 mm.
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 SAUF50X125-08B FAQ
It delivers 982 N push and 825 N pull at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 16 mm2 flow) running on DC24V. The cylinder body rates to 1.0 MPa, but you must size force within the built-in valve's 0.15-0.8 MPa operating window.
Yes. The default action retracts the rod when the coil is energised. You can reconfigure it to extend-when-energised simply by repositioning the built-in valve on the cap. This allows flexible decentralized control without altering your external plumbing.
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