Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X155-20
The AirTAC Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X155-20 is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 155mm 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
- Stroke155 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X155-20
The AirTAC SAUJ80X155-20 is a double-acting, single-rod profile cylinder with an on-site adjustable extend stroke. An external stop screw lets you trim the working stroke by up to 20 mm, giving a usable extend range of 135-155 mm. The extruded aluminum barrel is noticeably shorter than an ISO 15552 cylinder of the same bore. It features a 3/8" port, an M20x1.5 rod thread, and 28 mm adjustable air cushions.
This 80 mm bore generates 2513 N of push force and 2268 N of pull at 0.5 MPa. For sizing, the safe working load is roughly 1508 N, and it can vertically lift about 128 kg with a 2:1 safety margin. The stop screw dictates the end position but does not secure the load mechanically. Without live air, the piston drifts, so fit an external rod lock or pilot-operated check valve for load holding. This SKU lacks a magnet and cannot accept a sensor.
Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X155-20 Technical Specifications
| Model | Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X155-20 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 155 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 SAUJ80X155-20
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×155 | 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 SAUJ80X155-20 Is Used
Press Fit Dialing
Pin insertion stations needing precise bottoming depth. The stop screw trims the 155 mm extend stroke by up to 20 mm to set exact press force without reprogramming.
Variable Length Diverters
Package routing gates that handle mixed box sizes. Operators manually adjust the extend window on-site to match new package dimensions quickly.
Adjustable Stops
Pallet accumulation lines requiring physical end stops at varying distances. The external screw sets the exact 135-155 mm protrusion for different pallet geometries.
Is the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X155-20 the Right Cylinder?
When sizing this actuator, look at the neighboring bores: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore provides 3927 N. The 80 mm sits perfectly in the middle at 2513 N. Choose the SAUJ over a fixed SAU when your machine assembly requires slight on-site extend length tuning without buying a new cylinder. Select the 20 mm adjust window to dial in the 135-155 mm stroke range. Mounting options include Basic, FA flange, and LB foot, sharing compatibility with the AirTAC SC series. Because this is a non-magnetized SKU, you cannot mount CMSG or DMSG sensors. For this 155 mm stroke, ensure external guidance to prevent side-load wear.
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 SAUJ80X155-20 FAQ
This 80 mm bore cylinder delivers 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 maximum theoretical force of 513 kgf at 1.0 MPa. The external stop screw allows you to shorten the maximum 155 mm extend stroke by up to 20 mm on-site, yielding a usable range of 135-155 mm.
The external stop screw mechanically sets the extend end position. It is not a load lock. Under air loss or valve centering, the piston will drift, and the 28 mm adjustable air cushion only decelerates the piston near the end of travel. For true load holding, install an external rod lock or pilot-operated check valve. Additionally, this specific SKU lacks a magnet, so it cannot accept position sensors.
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