Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 140mm 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
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-75S
The AirTAC SAIJ80X140-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to shorten the effective travel. With a nominal 140 mm stroke and a 75 mm adjustment range, it provides a usable travel window of 65 to 140 mm. This on-the-fly tunability allows operators to dial in exact end positions during commissioning or product changeovers without swapping out the cylinder or adding external stops. It delivers a robust 2268 N pull force at 0.5 MPa, making it well-suited for heavy positioning tasks.
The carbon steel piston rod features an M20x1.5 thread, and combined with the 25 mm rod diameter, it provides excellent rigidity to handle high side loads. This adjustable variant utilizes a specific mounting subset including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. Equipped with a -S magnet, it is fully compatible with AirTAC CMSE reed and DMSE electronic sensors for precise position feedback, while the extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 140 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 SAIJ80X140-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SAIJ80X140-75S Is Used
Variable End-Stop Tuning
Dial in the exact retract position down to a 65 mm stroke for precision machining or assembly operations without machining new hard stops.
Product Changeover
Quickly adapt a packaging line to different carton sizes by adjusting the cylinder's travel window up to 75 mm during format changes.
Machine Setup
Fine-tune end-of-stroke positions during initial commissioning to perfect timing and mechanical alignment without replacing the actuator.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-75S the Right Cylinder?
Choose this 80 mm bore when your application requires more force than a 63 mm cylinder (which provides 1402 N pull at 0.5 MPa) but you do not need the full thrust of a 100 mm unit. The 75 mm adjustment screw is a mechanical stop that fine-tunes the retract end position, but it does not hold the load without live air pressure. For applications requiring true fail-safe load holding, consider the SAIL pneumatic lock or BSAI clamp-lock series instead. To replace this unit, match the 80 mm bore, 140 mm nominal stroke, PT tapered port, the -S magnet option, and the 75 mm adjustment code. Because the adjustment range is large, ensure the mechanical stopper is securely locked after tuning to prevent drift.
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 SAIJ80X140-75S FAQ
At a standard operating pressure of 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can deliver up to 4523 N of push force at its maximum rated pressure of 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the 140 mm nominal stroke anywhere within a 65 to 140 mm travel window. It sets the end position but does not lock the load without continuous air pressure.
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