Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 120mm 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
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-75
The AirTAC SAIJ80X120-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 45 to 120 mm window. Delivering a substantial 4523 N of push force at 0.9 MPa, it is built to handle demanding actuation tasks while maintaining dimensional interchangeability with standard ISO 15552 mounting interfaces.
This 80 mm bore model uses a G3/8 port and a robust 25 mm carbon steel rod with an M20x1.5 thread, providing excellent rigidity against side loads. The extruded aluminum barrel includes sensor grooves on both sides for straightforward positioning feedback, and the rear screw mechanism acts purely as a travel stop for end-position tuning, not as a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 120 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 SAIJ80X120-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SAIJ80X120-75 Is Used
Variable End-Stop Forming
Dial in the exact 45 to 120 mm travel window needed for pressing or forming operations during setup, allowing rapid accommodation of new material thicknesses without mechanical retooling.
Product Changeover Diverters
Quickly adjust the retract end position on packaging lines to handle varying carton sizes, using the rear stopper to shift the stroke distance on the fly.
Commissioning Position Tuning
Fine-tune the final end-of-stroke location during machine commissioning to perfectly align tooling, eliminating the guesswork of fixed-stroke actuator placement.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-75 the Right Cylinder?
Select this specific SAIJ configuration when your application requires precise end-position calibration during commissioning or frequent product changeovers, avoiding the need to physically swap cylinders or bolt on external stops. If you need less force, stepping down to a 63 mm bore yields 2805 N of push force at 0.9 MPa, while moving up to a 100 mm bore provides 7068 N for heavier loads. To match this ISO 15552 replacement exactly, specify an 80 mm bore, 120 mm stroke, 75 mm adjustment range, PT port thread, standard carbon steel rod, no magnet, and a mounting choice from the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
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 SAIJ80X120-75 FAQ
At an operating pressure of 0.9 MPa, this 80 mm bore cylinder generates 4523 N of push force and 4071 N of pull force. It can deliver a maximum of 513 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the nominal 120 mm stroke by up to 75 mm, creating a usable travel window of 45 to 120 mm. This stopper only decelerates and sets the travel end; it does not lock the load without live air pressure.
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