Airtac SAU Standard Air Cylinder SAU80X425S
The AirTAC Airtac SAU Standard Air Cylinder SAU80X425S is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 425mm stroke, 3/8" air ports and adjustable end cushioning. Its hard-anodized aluminum-profile barrel is shorter than an ISO 15552 cylinder of the same bore, and it shares SC-series mounting accessories.
- BoreØ80 mm
- Stroke425 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 mm
About the Airtac SAU Standard Air Cylinder SAU80X425S
The AirTAC SAU80X425S is a double-acting profile-type cylinder built around an extruded aluminum barrel with an integrated sensor groove. Because its overall length is shorter than an ISO 15552 cylinder of the same bore, it delivers a significant space advantage in tight machine layouts. It operates at 0.15-1.0 MPa and generates a push force of 2513 N and a pull force of 2268 N at 0.5 MPa. The 3/8 inch port and M20x1.5 rod thread are fixed by the 80 mm bore. Equipped with a 28 mm adjustable air cushion at both ends, it handles speeds of 30-800 mm/s smoothly.
For real-world sizing, plan for a safe working load of about 1508 N at 0.5 MPa, accounting for seal friction and smooth travel rather than the full theoretical rating. Vertically, this translates to lifting about 128 kg with a 2:1 safety margin, letting you match the cylinder to actual part weights. The -S suffix denotes a built-in piston magnet, enabling CMSG, DMSG, or EMSG electronic switches for position feedback. For high-heat environments up to 150 C, specify the Viton H seal option instead of the standard TPU.
Airtac SAU Standard Air Cylinder SAU80X425S Technical Specifications
| Model | Airtac SAU Standard Air Cylinder SAU80X425S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 425 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAU series datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G (BSPP). A high-temperature seal (0-150 °C) is available.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAU Standard Air Cylinder SAU80X425S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×425 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAU-family variants: SAUD (double rod), SAUJ (adjustable stroke), SAUF (with built-in solenoid valve), and SAU-S with built-in magnet. Seals: TPU (blank) / Viton H / NBR N. Sensor switches: CMSG / DMSG / EMSG.
Where the Airtac SAU Standard Air Cylinder SAU80X425S Is Used
Injection Mold Platen Ejection
Provides the 2513 N push force required to eject heavy plastic parts from molding platens, utilizing the 425 mm stroke to clear deep mold cavities completely.
Pallet Diverting Arm
Actuates a heavy routing arm on packaging conveyors where the compact profile saves valuable floor space without sacrificing the 128 kg vertical lift equivalence.
Automated Crate Stacking
Drives vertical stacking mechanisms for loaded timber crates, relying on the 28 mm air cushions to decelerate the 425 mm travel safely at high speeds.
Is the Airtac SAU Standard Air Cylinder SAU80X425S the Right Cylinder?
When sizing this 80 mm bore actuator, evaluate your neighbors: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore provides 3927 N. Choose the 80 mm bore when your load sits safely above the 63 mm capacity but you want to avoid the bulk of the 100 mm unit. Because this is a 425 mm stroke, the extended 25 mm rod is susceptible to bending under lateral stress; always incorporate an external guide mechanism to prevent side-loading and premature seal wear. Mounting hardware is fully compatible with AirTAC SC series accessories, including LB foot brackets, FA/FB flanges, and CA/CB clevises.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the control valve is centered. The adjustable cushion only decelerates the piston near the stroke ends and does not function as a braking lock. If your application requires strict position holding under load loss, install an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB — same as SC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAU Standard Air Cylinder SAU80X425S FAQ
This 80 mm bore cylinder features a 3/8 inch port and an M20x1.5 rod thread. The force output is 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a theoretical maximum of 513 kgf at 1.0 MPa.
The extruded aluminum profile barrel makes the cylinder shorter than an ISO 15552 unit of the same bore, saving machine space. It shares mounting dimensions strictly with the AirTAC SC series, so you can use standard LB, FA, FB, CA, and CB brackets. The -S magnet allows CMSG, DMSG, and EMSG sensors to track position directly in the barrel groove.
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