Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-100S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 240mm 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
- Stroke240 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-100S
The AirTAC SAIJ80X240-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 140 to 240 mm. It delivers a robust 2513 N of push force and 2268 N of pull force at a 0.5 MPa operating pressure, making it well-suited for heavy-duty positioning tasks. The extruded aluminum barrel features sensor grooves on both sides, and because this is the -S variant, it includes a magnet compatible with AirTAC CMSE reed and DMSE solid-state sensors.
This model uses a 25 mm carbon steel rod with an M20x1.5 thread, offering substantial rigidity against side loads. The rear stopper mechanism allows you to fine-tune the retract end position at commissioning without adding external stops. Keep in mind the adjuster acts only as a travel stop and deceleration aid alongside the standard air cushions; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-100S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 240 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 SAIJ80X240-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SAIJ80X240-100S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance from 140 to 240 mm during machine commissioning to accommodate new product dimensions without swapping out the cylinder body.
Product Changeover Diverter
Quickly adjust the stroke length on a packaging line diverter to handle different package sizes on the fly using the rear stopper screw.
Heavy-Duty Forming Press
Leverage the 2513 N push force at 0.5 MPa to form materials, using the adjustable stop to precisely control the bottoming position.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-100S the Right Cylinder?
Selecting this 80 mm bore cylinder makes sense when your application requires the 2513 N push force at 0.5 MPa (or 3518 N at 0.7 MPa) and a highly flexible end-position setup. The 100 mm adjustment range is ideal for machinery that frequently processes varying product sizes, allowing you to dial back the stroke by up to 100 mm on the fly. If your force requirements are lower, stepping down to a 63 mm bore provides 1559 N, while moving up to a 100 mm bore yields 3927 N.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 240 mm nominal stroke, G3/8 PT port threads, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, but deliberately omits FB, CA, CB, and CR brackets. Because the total travel can reach 240 mm, ensure adequate external guiding to prevent excessive rod side-loading, as long unsupported strokes can induce wear.
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 SAIJ80X240-100S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 100 mm, creating a usable travel window of 140 to 240 mm. It acts as a mechanical stop to fine-tune the end position without needing to add external stops.
At a 0.5 MPa operating pressure, it provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
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