Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X120-20
The AirTAC Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X120-20 is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 120mm 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
- Stroke120 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 mm
About the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X120-20
The AirTAC SAUJ80X120-20 is a double-acting single-rod profile cylinder with an on-site extend stroke adjustment window of 20 mm. You can trim the 120 mm nominal stroke down to a 100 mm working length using the external stop screw. The extruded aluminum barrel makes it shorter than an ISO 15552 unit of the same bore. It features a 25 mm piston rod, an M20x1.5 rod-end thread, and a 3/8" port.
This 80 mm bore delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa. The safe working load is roughly 1508 N, allowing a vertical lift of about 128 kg with a 2:1 margin. Adjustable air cushions of 28 mm decelerate the piston near the ends. You can pair the basic, FA, or LB mounts with AirTAC SC series accessories. This SKU lacks a magnet, so it cannot accept CMSG or DMSG sensors.
Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X120-20 Technical Specifications
| Model | Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X120-20 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 120 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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X120-20
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X120-20 Is Used
Press Fit Calibration
Final press depth varies by material batch. Trim the 20 mm extend window on-site to set the exact 100 to 120 mm insertion depth for bearing housings.
Variable Carton Flap Folding
Different box heights require precise flap folding positions. The external stop screw lets operators quickly tune the extend endpoint without changing the cylinder.
Sorting Diverter Timing
A diverting arm needs slight endpoint adjustments to match varying product widths. The stop screw sets the exact extend position for reliable sorting.
Is the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X120-20 the Right Cylinder?
If you need less force, the 63 mm bore offers 1559 N push at 0.5 MPa; if you need more, the 100 mm bore provides 3927 N. Choose the SAUJ80X120-20 over a fixed SAU80 when your machine assembly requires minor extend length tuning without buying a new cylinder. The 20 mm adjust window is ideal for final mechanical timing. Select basic, FA flange, or LB foot mounting based on your frame. Because this SKU has no -S magnet, position sensing is impossible here; order a -S variant if you need switches. For strokes at or over 300 mm, always use external guide rails to prevent side-load damage to the seal.
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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X120-20 FAQ
At 0.5 MPa it pushes 2513 N and pulls 2268 N. Push force is 3518 N at 0.7 MPa and 4523 N at 0.9 MPa, with a theoretical max of 513 kgf at 1.0 MPa. The 120 mm nominal extend stroke can be shortened by up to 20 mm on-site, giving a usable range of 100 to 120 mm. It uses a 3/8" port and has 28 mm adjustable air cushions.
An external stop screw physically limits the piston extension, letting you trim the stroke by up to 20 mm. This stop only sets the end position; it is not a load lock. The cylinder will drift if air pressure drops, as the air cushion only decelerates the piston near the end. For secure load holding, install an external rod lock or a pilot-operated check valve.
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