Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50-08B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 50mm 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
- Stroke50 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50-08B
The SAUF40X50-08B 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 unit of the same bore. It features a 1/4" cylinder port, a 1/4" valve port, and a 16 mm2 flow (Cv 0.89).
Operating within the 0.15-0.8 MPa valve window, it delivers 628 N push and 528 N pull at 0.5 MPa. The DC24V terminal entry coil offers IP65 protection and allows up to 5 cycles per second. For sizing, a safe working load is roughly 377 N, and it can vertically lift about 32 kg with a 2:1 margin. Note this SKU lacks a magnet and cannot accept a sensor.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 50 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 SAUF40X50-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×50 | 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 SAUF40X50-08B Is Used
Decentralized Clamping
Ideal for a machining cell where each clamping point needs independent control without routing long tubing back to a central manifold.
Inline Diverters
Perfect for short-stroke sorting gates on a conveyor, using the integrated 4M210 valve to switch individual actuators rapidly at up to 5 cycles per second.
Modular Pick-and-Place
Suits compact assembly stations where saving space is critical, leveraging the short profile barrel and eliminating extra valve plumbing.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X50-08B the Right Choice?
When sizing, compare this 40 mm bore against the 32 mm and 50 mm neighbors. At 0.5 MPa the 32 mm yields 402 N push while the 50 mm reaches 982 N. Confirm your coil is DC24V with terminal entry. The default action retracts the rod when energized, but you can reposition the valve to extend on signal. Always size force within the 0.15-0.8 MPa valve range, not the 1.0 MPa cylinder body rating. The built-in valve only routes air; it is not a lock. For suspended loads, add an external rod lock or pilot-operated check valve to prevent drift. Since the 50 mm stroke is short, side-load guiding is minimal.
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 SAUF40X50-08B 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) running on DC24V. You must size the force within the 0.15-0.8 MPa operating window of the valve, even though the cylinder body rates to 1.0 MPa.
No, this specific SKU lacks a magnet and cannot accept a sensing switch. Additionally, the built-in valve routes air but does not lock the piston. If air is lost, the load drifts. You must add an external rod lock or pilot-operated check valve for load holding.
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