Airtac SAIJ100 Adjustable Cylinder SAIJ100X35-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X35-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 35mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke35 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X35-20
The AirTAC SAIJ100X35-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to a 15-35 mm window. Delivering a robust 3927 N push force at 0.5 MPa, it is designed for applications requiring exact end-position tuning without swapping out components.
Equipped with a 25 mm carbon steel rod and an M20x1.5 thread, it handles substantial side loads, while the PT G1/2 port ensures high airflow. The extruded aluminum barrel includes dual sensor grooves, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X35-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X35-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 35 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X35-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×35 | 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 SAIJ100 Adjustable Cylinder SAIJ100X35-20 Is Used
Machine Changeover
Quickly dial in the 15-35 mm travel window during product size transitions without replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the retract stroke at commissioning to absorb mechanical tolerances and ensure precise positioning of heavy 100 mm bore tooling.
Variable Stroke Stops
Adjust the effective stroke on the fly for assembly lines that need slightly different retraction distances between operational modes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X35-20 the Right Cylinder?
Choose this 100 mm bore when 80 mm (2513 N push at 0.5 MPa) is insufficient but a 125 mm bore would be overkill. The 20 mm adjustment range is ideal for machine setups requiring variable end stops during commissioning, unlike a fixed-stroke SAI cylinder. Because the 35 mm stroke is short, side-load stress is minimal, but always guide external loads axially.
For ISO 15552 replacement matching, specify a 100 mm bore, 35 mm stroke, up to 20 mm adjustment, PT G1/2 port, and the required mounting bracket. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider the 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 SAIJ100 Adjustable Cylinder SAIJ100X35-20 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides a push force of 3927 N and a pull force of 3681 N. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to trim the 35 mm nominal stroke back by up to 20 mm, creating a usable 15-35 mm travel window. The adjuster acts as a mechanical stop and does not function as a lock or brake.
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