Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 30mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke30 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20
The AirTAC SAIJ80X30-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to a 10-30 mm window. In the 80 mm bore class, it provides a robust 2513 N push force at 0.5 MPa, making it well-suited for heavier positioning tasks that require exact end-stop calibration. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This model uses a PT tapered port thread and a 25 mm carbon steel rod with an M20x1.5 thread, offering high rigidity against side loads. The rear adjuster functions purely as a mechanical stop to set the retract position during commissioning or product changeover. It does not hold the load without live air pressure; for true load-holding, a SAIL or BSAI variant is required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 30 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
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 SAIJ80 Adjustable Cylinder SAIJ80X30-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×30 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20 Is Used
Short-Stroke Positioning
Dial in the exact 10-30 mm travel needed for clamping or pressing operations where a fixed 30 mm stroke would bottom out too hard.
Machine Changeover
Quickly adjust the retract stop to accommodate new product sizes on a packaging line without disassembling the cylinder mount.
Heavy-Duty End Stops
Leverage the 2513 N push force at 0.5 MPa for robust actuation while using the rear screw to fine-tune the final resting position.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20 the Right Cylinder?
Choose this 80 mm adjustable model when your fixture needs precise end-position tuning within a short 10-30 mm travel window, avoiding the need to swap cylinders for every minor setup change. If your application requires less force, stepping down to a 50 mm bore yields 982 N at 0.5 MPa, while stepping up to a 100 mm bore provides 3927 N. Because the stroke is only 30 mm, the 25 mm rod handles inherent side loads well without needing an external guide.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 30 mm stroke, PT port thread, and the 20 mm adjustment range. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles. Since no magnet is specified, position sensing requires adding a -S option to use CMSE reed or DMSE electronic sensors.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/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/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20 FAQ
The rear adjuster screw lets you shorten the nominal 30 mm stroke by up to 20 mm, creating a usable travel window of 10-30 mm. It acts as a mechanical stop for end-position tuning and is not a lock, meaning the cylinder will not hold its load without continuous air pressure.
At 0.5 MPa, it provides 2513 N of push force and 2268 N of pull force. If higher force is needed, the 100 mm bore offers 3927 N push at the same pressure.
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