Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250-08B 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 SAUF50X250-08B
The SAUF50X250-08B 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, an M16x1.5 rod thread, and 21mm adjustable cushions.
Operating in the 0.15-0.8 MPa valve window, it delivers 982 N push and 825 N pull at 0.5 MPa. The integrated 1/4" valve flows 16 mm2 (Cv 0.89) at up to 5 cycles/sec. This DC24V terminal-entry coil is IP65 rated. For sizing, the safe working load is roughly 589 N, and it can vertically lift about 50 kg with a 2:1 margin. Note this SKU lacks the S suffix, so it cannot accept a magnetic switch.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250-08B |
|---|---|
| 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 SAUF50X250-08B
| 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 SAUF50X250-08B Is Used
Decentralized Conveyor Divert
Mounts directly at the divert gate on a long conveyor line. The integrated DC24V valve switches the 250mm stroke locally without routing air lines back to a central manifold.
Independent Pack Pusher
Ideal for a standalone packaging push-off station. The 4M210-08 valve fires at 5 cycles/sec, pushing cartons with a 982 N force using a single coil signal.
Machine Tool Loading Arm
Fits compactly into a machining cell to load parts. The profile barrel saves space, and the 1/4" valve port delivers a Cv of 0.89 for rapid actuation.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X250-08B the Right Choice?
Size by comparing the 50mm bore to its neighbours: the 40mm bore yields 628 N push, while the 63mm bore provides 1559 N at 0.5 MPa. This model pushes 982 N and pulls 825 N at 0.5 MPa. Confirm the DC24V terminal entry and PT thread suit your control panel. The cylinder body rates to 1.0 MPa, but you must size force within the built-in valve's 0.15-0.8 MPa range. The rod retracts when the coil is energised; reposition the valve to reverse this to extend-when-energised. Since the 250mm stroke exceeds 300mm, ensure adequate side-load guidance. The valve routes air and is not a lock; if power or air drops, the piston drifts and the cushion only decelerates near stroke end. Add an external rod lock or pilot-operated check valve for held 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 SAUF50X250-08B FAQ
It generates 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, 5/2 solenoid) running on DC24V. Although the cylinder body rates to 1.0 MPa, the assembled unit operates strictly in a 0.15-0.8 MPa window.
No, the valve only routes air; it is not a lock. If air is lost, the piston drifts and the cushion merely decelerates near the end of travel. Use an external rod lock or pilot-operated check valve to hold a load. Additionally, this SKU lacks the S suffix, so it cannot accept a magnetic switch.
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