Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500-08A
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500-08A is a genuine double-acting profile-type cylinder with a Ø40mm bore, 500mm 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
- Stroke500 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilAC220V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500-08A
The SAUF40X500-08A is a double-acting profile-type 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 40mm bore has 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, it delivers 628N push and 528N pull at 0.5 MPa. The 1/4" valve port yields a 16mm2 flow (Cv 0.89) with a 5 cycle/s limit. The AC220V terminal entry coil is IP65 rated. For sizing, the safe working load is roughly 377N, and vertical lift capacity is about 32kg with a 2:1 margin.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500-08A Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500-08A |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø40 mm |
| Stroke | 500 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 | AC220V · AC 3.5 VA |
| 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 SAUF40X500-08A
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 40×500 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| A | Coil voltage AC220V. |
| 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 SAUF40X500-08A Is Used
Decentralized Conveyor Divert
Mounts directly at the divert station on a long conveyor line. The integrated valve eliminates long tube runs back to a central manifold, improving cycle response.
Independent Pallet Stop
Acts as a standalone pallet stop gate in a large facility. One AC220V signal controls the 500mm stroke without occupying a slot in the main valve island.
Remote Machine Guard Gate
Drives a 500mm safety guard on a remote machine section. The built-in 4M210 valve simplifies installation by removing the need for a nearby remote valve.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF40X500-08A the Right Choice?
When sizing, compare neighbouring bores: a 32mm bore offers 402N push at 0.5MPa, while a 50mm bore provides 982N. This 40mm bore yields 628N push and 528N pull at 0.5MPa. Always size force within the 0.15-0.8 MPa valve operating range, not the 1.0 MPa cylinder body rating. Confirm the AC220V terminal entry and PT thread suit your control system. The rod retracts when the coil is energised; reposition the valve to switch to extend-when-energised. Without a -S suffix, this SKU cannot take a magnetic switch. Because the 500mm stroke exceeds 300mm, use an external guide to prevent rod bending and side-load wear. The valve routes air but is not a load lock; add an external rod lock or pilot-operated check valve to hold a load on air loss.
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 SAUF40X500-08A FAQ
It delivers 628N push and 528N pull at 0.5 MPa. The built-in valve is a 4M210-08 5/2 solenoid with a 1/4" port, 16mm2 flow (Cv 0.89), and a 5 cycle/s limit. The coil is AC220V 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.
The valve routes air but does not lock the piston; you need an external rod lock or pilot-operated check valve to hold a load. By default the rod retracts when the coil is energised, but you can reposition the valve to make it extend-when-energised.
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