Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 115mm 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
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40S
The AirTAC SAIJ80X115-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 75 to 115 mm. Delivering a substantial 4523N of push force at 0.9 MPa, it handles demanding positioning tasks. The integrated -S magnet enables direct mounting of CMSE reed and DMSE electronic sensors along the dual-side barrel grooves.
Unlike fixed-stroke alternatives, this model allows you to dial in the exact retract end-position during commissioning without adding external stops. The PT tapered port threads and robust 25mm carbon steel rod with an M20x1.5 thread provide strong mechanical connections, while the rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAIJ80X115-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SAIJ80X115-40S Is Used
Machine Setup Tuning
Dial in the exact 75-115mm travel end-stop during commissioning to perfect positioning without machining custom external spacers.
Product Size Changeover
Quickly adapt the retract distance on a shared production line when switching between product variants, minimizing downtime.
Variable End-Stop Positioning
Achieve precise lower-end travel limits for specialized assembly operations using the 40mm rear adjustment screw and standard air cushion.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40S the Right Cylinder?
Selecting this 80mm bore cylinder is ideal when your application requires the 2513N push force at 0.5 MPa but demands precise end-stop tuning over a 75-115 mm window. If your setup needs less force, stepping down to a 63mm bore yields 1559N, whereas moving up to a 100mm bore provides 3927N. The rear adjustment mechanism is perfect for product changeovers on a shared platform, removing the need to physically swap cylinders when sizes change.
Because this is a profile cylinder dimensionally interchangeable per ISO 15552, it drops directly into standard Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting footprints. To replace an existing unit, match the 80mm bore, 115mm stroke, 40mm adjustment, PT port threads, and the -S magnet requirement. For any application requiring true load-holding without continuous air supply, consider an AirTAC SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a locking brake.
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 SAIJ80X115-40S FAQ
At an operating pressure of 0.9 MPa, this 80mm bore double-acting cylinder generates a push force of 4523N and a pull force of 2268N. At 0.5 MPa, it provides 2513N of push force.
The rear adjuster screw allows you to shorten the effective stroke by up to 40mm, creating a usable travel window between 75mm and 115mm. This stopper fine-tunes the end position but does not lock or hold the load without live air pressure.
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