Airtac SAIJ80 Adjustable Cylinder SAIJ80X100-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X100-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 100mm 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
- Stroke100 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X100-40
The AirTAC SAIJ80X100-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the external stopper screw, you can shorten the effective travel from its 100 mm nominal length down to 60 mm, creating a 60-100 mm usable window. This mechanism allows precise end-position tuning at commissioning or during product changeovers without swapping out the entire actuator.
Operating at 0.5 MPa, this 80 mm bore generates 2513 N of push force and 2268 N of pull force, scaling up to 3518 N push at 0.7 MPa. The 25 mm carbon steel rod and M20x1.5 thread provide robust resistance to side loads, while the extruded aluminum barrel incorporates sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches if a magnet is added later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X100-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X100-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 100 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 SAIJ80X100-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×100 | 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 SAIJ80X100-40 Is Used
Changeover Positioning
Dial in the exact 60 to 100 mm stroke during product size changeovers on a packaging line without replacing the cylinder or adding shims.
End-Stop Calibration
Fine-tune the final retract position during machine commissioning to align pressing or clamping tools perfectly within a 40 mm window.
Variable Stroke Actuation
Provide adjustable travel for automated assembly stations where the effective stroke length must be adapted between different workpiece heights.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X100-40 the Right Cylinder?
Choose this adjustable-stroke model when an application demands variable end-stops rather than a fixed 100 mm travel, saving the effort of machining external stops during setup. If your process requires less force, stepping down to a 63 mm bore yields 1559 N of push at 0.5 MPa; if higher output is needed, a 100 mm bore provides 3927 N. For exact ISO 15552 replacement matches, verify the 80 mm bore, 100 mm stroke, 40 mm adjustment range, PT tapered port threads, and the required mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Because the 100 mm stroke is relatively short, an external guide is typically not required for side loads, but always support the rod end if pushing heavy asymmetrical loads. Remember that the rear adjuster and the variable air cushions only decelerate the travel end; they do not hold the load without live air. For true fail-safe load holding, consider an external rod lock or the AirTAC SAIL or BSAI series.
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 SAIJ80X100-40 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster acts as an external stopper that lets you shorten the nominal 100 mm stroke by up to 40 mm, providing a usable travel window of 60 to 100 mm. It is a travel stop, not a lock, so it cannot hold the load without continuous air pressure.
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