Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-75S
The AirTAC SAIJ100X180-75-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 105-180 mm usable travel window by allowing you to trim the nominal 180 mm stroke back by up to 75 mm. In the 100 mm bore class, it delivers a robust 3927 N push thrust at 0.5 MPa and 7068 N at 0.9 MPa, making it suitable for heavy-duty positioning tasks.
This variant includes a SUS304 stainless steel rod (code B) for superior corrosion resistance and PT tapered port threads. The extruded aluminum barrel integrates sensor grooves on both sides, and because this unit includes the -S magnet option, it is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state sensors for precise end-of-travel detection.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 180 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 SAIJ100BX180-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×180 | 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 SAIJ100BX180-75S Is Used
Machine Changeovers
Dial in the 105-180 mm travel window during product size transitions to set new retract end-stops without physically swapping the actuator.
End-Position Tuning
Use the rear adjuster to fine-tune the stroke at commissioning, absorbing mechanical tolerances and ensuring precise positioning of heavy tooling.
Heavy-Duty Conveying
Leverage the 7068 N push force at 0.9 MPa to index or lift heavy pallets, using the adjustable stop to tweak the indexing distance on the fly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-75S the Right Cylinder?
Choose this 100 mm bore adjustable cylinder when your application requires 3927 N of push force at 0.5 MPa, or scale down to the 63 mm bore if your load only requires 1559 N. The rear screw stopper allows you to fine-tune the retract end-position during commissioning or product changeovers without swapping the cylinder or adding external stops. Remember that the rear adjuster functions only as a travel stop, not a lock; the SAIJ will not hold a load without live air, so consider a SAIL or BSAI cylinder if load-holding is required. For any stroke of 300 mm or more, an external guide is recommended to manage side-load, but at 180 mm the 25 mm rod handles standard loads effectively. To match an ISO 15552 replacement, verify the 100 mm bore, 180 mm stroke, 75 mm adjustment, PT ports, and -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 SAIJ100BX180-75S FAQ
At 0.5 MPa operating pressure, the 100 mm bore generates 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster acts as a mechanical stop that lets you shorten the 180 mm nominal stroke by up to 75 mm, creating a 105-180 mm usable travel window. It decelerates the travel end but does not lock the load without live air pressure.
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