Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 145mm 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
- Stroke145 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-20
The AirTAC SAIJ80X145-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 2513N pull force at 0.5 MPa, utilizing a 25mm carbon steel rod with an M20x1.5 thread. The built-in rear stopper allows you to shorten the effective travel, providing a usable window of 125 to 145mm for precise end-position tuning.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during machine commissioning or product changeover. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed and DMSE electronic switches if a magnet is added later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 145 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 SAIJ80X145-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×145 | 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 SAIJ80X145-20 Is Used
Machine Setup
Fine-tune the end-of-stroke position during commissioning without swapping out the entire actuator.
Product Changeover
Quickly adjust the travel window from 145mm down to 125mm when adapting the line to a new product size.
Variable End Stops
Dial in the exact retraction point needed for delicate pressing or positioning tasks on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-20 the Right Cylinder?
Choose this 80mm bore when you need high thrust forces between the 50mm (825N pull) and 100mm (3681N pull) classes. The adjustable stroke is ideal for applications requiring variable end stops or fine-tuning without hardware changes. The 25mm rod and M20x1.5 thread handle high side loads well, but for this 145mm stroke, always verify guiding if experiencing heavy lateral forces.
The rear adjuster acts only as a travel stop and works alongside the standard air cushions to decelerate the piston. It does not hold the load without live air pressure. For true load-holding without continuous air supply, consider the SAIL or BSAI series. For a direct ISO 15552 replacement, match the 80mm bore, 145mm stroke, 20mm adjustment, PT port thread, and the specified mounting accessories.
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 SAIJ80X145-20 FAQ
At 0.5 MPa, it provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjusting screw acts as a mechanical stopper, allowing you to trim the nominal 145mm stroke back by up to 20mm. This creates a usable travel window of 125 to 145mm.
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