Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50S
The AirTAC SAIJ100X75-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a substantial 3927 N push force at 0.5 MPa, stepping up to 7068 N at 0.9 MPa. The built-in rear stopper allows you to trim the 75 mm nominal travel back by up to 50 mm, creating a 25-75 mm usable travel window for precise end-position tuning during commissioning.
This adjustable-stroke model includes a magnet for CMSE and DMSE sensors and uses a carbon steel rod with an M20x1.5 thread. It supports PT tapered ports sized G1/2. The rear adjuster acts purely as a travel stop to set deceleration and end limits, meaning it will not hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100X75-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SAIJ100X75-50S Is Used
Variable End-Stop Positioning
Dial in the exact retraction point between 25 and 75 mm during machine commissioning to accommodate multiple product sizes without mechanical rebuilds.
Product Changeover Systems
Quickly adjust the stroke length on the fly using the rear screw, allowing a single cylinder to handle different package heights or material lengths.
Heavy-Duty Clamping
Leverage the 7068 N push force at 0.9 MPa to secure heavy workpieces, using the adjustable stop to set the precise clamping depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50S the Right Cylinder?
Select this 100 mm bore when a 63 mm cylinder (1559 N push at 0.5 MPa) is insufficient, but you need the flexibility to dial in the exact end-stop on a variable product line. The rear adjustment screw lets you fine-tune the 25-75 mm travel window without swapping the cylinder or adding external stops, unlike a fixed-stroke SAI model.
For any application needing 300 mm or more of stroke, you must use an external guide to prevent excessive side-loading, though this 75 mm stroke operates safely within its 30-800 mm/s speed range. If your process requires true load-holding without continuous air pressure, this cylinder is not a lock; consider the SAIL or BSAI series instead. For ISO 15552 replacement matching, verify the 100 mm bore, 75 mm stroke, 50 mm adjustment, G1/2 PT port, and the -S magnet.
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 SAIJ100X75-50S FAQ
At 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjusting screw acts as a mechanical stop that lets you shorten the 75 mm nominal stroke by up to 50 mm, providing a usable travel window of 25 to 75 mm for fine-tuning end positions.
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