Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X700-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X700-08B is a genuine double-acting profile-type cylinder with a Ø40mm bore, 700mm 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
- Stroke700 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X700-08B
The SAUF40X700-08B 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. This SKU uses a DC24V terminal entry coil (IP65) and has no magnet, so it cannot accept a position sensor.
Operating within the valve's 0.15-0.8 MPa window, the 40mm bore delivers 628N push and 528N pull at 0.5 MPa. The 1/4" valve port yields a 16 mm2 flow (Cv 0.89) with a 5 cycle/s limit, while the cylinder port is 1/4". For sizing, expect a safe working load around 377N (about 60% of the 0.5MPa push force) or a 32kg vertical lift with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X700-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X700-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 700 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 SAUF40X700-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×700 | 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 SAUF40X700-08B Is Used
Decentralized Conveyor Divert
Mounts directly at the divert gate on a long conveyor line. The integrated 4M210-08 valve switches the 700mm stroke locally, eliminating long tubing runs back to a central manifold.
Remote Pallet Stopper
Ideal for a pallet accumulation zone where installing a remote valve bank is impractical. One DC24V signal actuates the stopper, saving installation time and manifold space.
Machine Tool Guard Gate
Drives a 700mm safety guard on a machining center. The built-in valve ensures immediate local response without adding a dedicated valve island, keeping the footprint compact.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X700-08B the Right Choice?
When sizing, compare neighboring bores: a 32mm bore offers 402N push at 0.5 MPa, while a 50mm bore provides 982N. This 40mm bore gives 628N push and 528N pull at 0.5 MPa. Always size force within the 0.15-0.8 MPa valve range, never the 1.0 MPa cylinder body rating. Confirm the DC24V terminal coil and PT threads meet your spec. By default the rod retracts when energized; reposition the valve to extend on signal. Without air the valve only routes flow, so add an external rod lock or pilot-operated check valve to hold a load. For this 700mm stroke, use external guides to prevent rod bending and side-load wear.
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 SAUF40X700-08B FAQ
It generates 628N push and 528N pull at 0.5 MPa. The built-in valve is a 4M210-08 (1/4" port, Cv 0.89, 5 cycles/s max) running on a DC24V terminal coil. 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 only routes air and is not a lock. If air is lost or the valve is centered, the piston will drift. To maintain a vertical or suspended load, you must install an external rod lock or a pilot-operated check valve.
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