Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400-08B is a genuine double-acting profile-type cylinder with a Ø50mm bore, 400mm 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
- Stroke400 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400-08B
The SAUF50X400-08B is a double-acting profile-type 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 50mm bore, 400mm stroke, 1/4" cylinder port, M16x1.5 rod thread, and 21mm adjustable cushions.
Operating within the valve's 0.15-0.8 MPa window, it delivers 982N push and 825N pull at 0.5 MPa. The safe working load is approximately 589N, and it can vertically lift about 50kg with a 2:1 margin. The integrated valve flows 16mm2 (Cv 0.89) at up to 5 cycles/sec. This DC24V terminal-entry coil offers IP65 protection. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 400 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 SAUF50X400-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 50×400 | 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 SAUF50X400-08B Is Used
Decentralized Conveyor Diverter
Mounts directly at the divert station. The integrated valve eliminates long tube runs back to a central manifold, improving cycle response for package sorting.
Independent Clamping Station
Ideal for standalone clamping actuators in large assembly layouts. One coil signal controls the clamp without consuming a slot in the main valve island.
Remote Gating Mechanism
Perfect for gating mechanisms spread across a wide machine bed. The built-in 4M210-08 valve provides localized 5 cycle/sec actuation without extra plumbing.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X400-08B the Right Choice?
When sizing, compare neighboring bores: a 40mm bore provides 628N push while a 63mm bore offers 1559N at 0.5 MPa. This 50mm bore provides 982N push. Always size force within the 0.15-0.8 MPa valve operating range, not the 1.0 MPa cylinder body rating. Confirm the DC24V terminal entry matches your control system. The rod retracts when the coil is energized but can be reconfigured to extend by repositioning the valve. Because the 400mm stroke exceeds 300mm, use an external guide to prevent rod bending and side loads. For load holding, note that the valve only routes air; add an external rod lock or pilot-operated check valve to prevent drift on air loss.
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 SAUF50X400-08B FAQ
It generates 982N push and 825N 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, you must size force within the valve's 0.15-0.8 MPa operating window.
No. The built-in valve routes air but is not a lock; the piston drifts on air loss. Add an external rod lock or pilot-operated check valve for holding. Additionally, this specific SKU lacks the -S magnet suffix, so it cannot accept a magnetic switch.
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