Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X900-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X900-08B is a genuine double-acting profile-type cylinder with a Ø50mm bore, 900mm 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
- Stroke900 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X900-08B
The SAUF50X900-08B 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. This unit has a 900 mm stroke, Ø20 mm rod, M16x1.5 rod thread, and 1/4" cylinder ports.
Operating within the 0.15-0.8 MPa valve window, it delivers 982 N push and 825 N pull at 0.5 MPa. The valve provides 16 mm2 flow (Cv 0.89) and handles up to 5 cycles/sec. The DC24V coil offers IP65 protection with terminal entry. For sizing, the safe working load is roughly 589 N (60% of the 0.5 MPa push), and it can vertically lift about 50 kg with a 2:1 margin. This SKU lacks the S suffix, so it cannot accept a magnetic switch.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X900-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X900-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 900 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 SAUF50X900-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 50×900 | 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 SAUF50X900-08B Is Used
Sorting Diverter
Drives a decentralized diverter gate on a high-speed conveyor using one DC24V signal, saving manifold space and tubing.
Vertical Lift Gate
Raises a 50 kg access panel with a 2:1 safety margin, leveraging the 900 mm stroke and built-in 4M210-08 valve.
Machine Guard Door
Opens a long guard door directly at the actuator without remote valves, simplifying machine layout and maintenance.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X900-08B the Right Choice?
Size this 50 mm bore against the 40 mm (628 N push @0.5 MPa) and 63 mm (1559 N) options to ensure your load fits. The safe working load is approximately 589 N. Confirm the DC24V coil and terminal entry match your control system. The cylinder body rates to 1.0 MPa, but you must size force within the built-in valve's 0.15-0.8 MPa working range. By default the rod retracts when energised; repositioning the valve changes this to extend-when-energised. The valve only routes air, so for load holding on air loss add an external rod lock or pilot-operated check valve. At 900 mm stroke, prevent rod bending by managing side loads and adding external guides.
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 SAUF50X900-08B FAQ
It pushes 982 N and pulls 825 N at 0.5 MPa. The built-in valve is a 4M210-08 (Cv 0.89, 5 cycles/sec) with a 1/4" port. The coil is DC24V with terminal entry. Although the cylinder body rates to 1.0 MPa, the assembled unit must operate in the 0.15-0.8 MPa valve window.
By default the rod retracts when the coil is energised, and you can reposition the valve to extend-when-energised. The valve routes air but does not lock; on air loss the piston drifts. Use an external rod lock or pilot-operated check valve for load holding.
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