Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-06B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-06B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 125mm 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
- Stroke125 mm
- Built-in valve4M210-06
- Valve port1/8"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-06B
The SAUF40X125-06B is a double-acting profile cylinder with a built-in AirTAC 4M210-06 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, an M12x1.25 rod thread, and 21mm adjustable cushions.
Operating within the valve's 0.15-0.8 MPa window, this 40mm bore generates 628N push and 528N pull at 0.5 MPa. The integrated valve flows 14 mm2 (Cv 0.78) via a 1/8" port, cycling up to 5 times per second. The DC24V terminal coil offers IP65 protection and responds in 0.05s or less. For sizing, the safe working load is roughly 377N, capable of a 32kg vertical lift with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-06B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-06B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 125 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 SAUF40X125-06B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×125 | 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 SAUF40X125-06B Is Used
Decentralized Clamping
Ideal for a machining cell where each clamping station uses one coil signal, saving manifold space and simplifying air routing with PU tube Ø8xØ5.
Inline Divert Gate
A diverting gate on a packaging line benefits from the integrated 4M210-06 valve, cycling up to 5 times per second without remote plumbing delays.
Compact Stopper Cylinder
Pallet stops in a conveyor module use the shorter profile body to fit tight spaces, driven directly by the DC24V terminal coil.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X125-06B the Right Choice?
When sizing, compare neighbouring bores: the 32mm bore yields 402N push at 0.5 MPa, while the 50mm bore provides 982N. This 40mm unit delivers 628N push and 528N pull at 0.5 MPa. Always size force within the 0.15-0.8 MPa valve operating range, never the 1.0 MPa cylinder body rating. Confirm the DC24V terminal coil and PT thread suit your control system. The rod retracts when energised by default, but repositioning the valve changes it to extend-when-energised. Because this SKU lacks a magnet, it cannot accept a magnetic switch. For strokes of 300mm or longer, add external side-load guidance. The valve routes air and does not hold the load on pressure loss; install an external rod lock or pilot-operated check valve for suspended 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 SAUF40X125-06B FAQ
It generates 628N push and 528N pull at 0.5 MPa. The built-in valve is a 4M210-06 5/2 solenoid with a 1/8" port, Cv 0.78, and a 1/4" cylinder port. The DC24V terminal coil operates at 3.0W with IP65 protection. Size the force within the 0.15-0.8 MPa valve window, not the 1.0 MPa cylinder body rating.
Yes, you can reconfigure the cylinder to extend-when-energised by repositioning the built-in valve. The valve only routes air; it is not a load lock. The piston will drift on air loss, so add an external rod lock or pilot-operated check valve if you need to hold a suspended load.
Related AirTAC Cylinders & Valves
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