Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-06B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-06B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 250mm stroke and a built-in 4M210-06 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ40 mm
- Stroke250 mm
- Built-in valve4M210-06
- Valve port1/8"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-06B
The SAUF40X250-06B is a double-acting profile-type cylinder with a built-in AirTAC 4M210 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 SKU uses terminal entry, PT threads, and has no magnet, so it cannot take a magnetic switch.
Within the 0.15-0.8 MPa working range of the integrated valve, this 40mm bore delivers 628N push and 528N pull at 0.5 MPa. The 1/8" ported valve flows 14 mm2 (Cv 0.78) at up to 5 cycles per second. The cylinder body rates to 1.0 MPa but you must size force within the valve's 0.8 MPa limit. Based on the 0.5 MPa push force, the safe working load is about 377N, yielding a vertical lift capacity of roughly 32kg with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-06B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-06B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | 1/4" |
| Rod thread | M12×1.25 |
| PU tube | Ø8 × Ø5 |
| Built-in valve | 4M210-06 (5/2) |
|---|---|
| Valve flow | 14.0 mm² (Cv 0.78) |
| 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 SAUF40X250-06B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×250 | Bore × stroke in mm. |
| -06 | Valve port 1/8" → 4M210-06. |
| 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 SAUF40X250-06B Is Used
Diverter Gate Control
Uses one DC24V coil signal to actuate a routing flap directly at the conveyor, cutting tubing runs to a central manifold.
Decentralized Clamp Station
Delivers 628N clamping force at 0.5 MPa with a local 4M210 valve, simplifying machine layout by removing remote valve banks.
Component Pusher
Indexes parts on an assembly line at up to 5 cycles per second without dedicating a manifold slot to this actuator.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X250-06B the Right Choice?
Size by checking both neighboring bores: the 32mm bore yields 402N push at 0.5 MPa, while the 50mm bore yields 982N. This 40mm unit provides 628N push and 528N pull at 0.5 MPa. Confirm the DC24V terminal coil and 1/4" cylinder air port suit your setup. The rod retracts when the coil is energised, but you can reposition the valve to extend on energisation. Because the valve only routes air, add an external rod lock or pilot-operated check valve to hold a load. Keep operating pressure between 0.15-0.8 MPa. For this 250mm stroke, ensure external guidance to manage side 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 SAUF40X250-06B FAQ
It pushes 628N and pulls 528N at 0.5 MPa. The built-in valve is a 4M210-06 (1/8" port, Cv 0.78, 5 cycles/s max) running on DC24V. Although the cylinder body rates to 1.0 MPa, the integrated valve limits the assembled unit to a 0.15-0.8 MPa working range.
Yes. The default action retracts the rod when energised, but you can reconfigure it to extend-when-energised by repositioning the valve. This self-switching design removes the need for a separate remote valve.
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