Airtac SAIJ100 Adjustable Cylinder SAIJ100AX185-40
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX185-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 185mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke185 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX185-40
The AirTAC SAIJ100X185-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 185 mm travel by up to 40 mm. This creates a precise 145 to 185 mm usable positioning window, ideal for fine-tuning end stops during commissioning without swapping out hardware.
This model features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads sized at G1/2. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept AirTAC CMSE reed or DMSE electronic switches if a magnet is added later. It utilizes a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX185-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX185-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 185 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX185-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×185 | 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 SAIJ100AX185-40 Is Used
Product Changeover
Quickly adapt the 145-185 mm travel window during format size changes on a packaging line without replacing the cylinder.
End-Stop Tuning
Fine-tune the final retract position during machine commissioning to dial in exact mechanical clearances.
Variable Positioning
Provide a adjustable physical stop for assembly presses requiring slight positional shifts between runs.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX185-40 the Right Cylinder?
You would choose this adjustable-stroke variant over a fixed SAI cylinder when a machine requires variable end-stops or product-size changeovers, utilizing the 40 mm trim range to adapt positioning on the fly.
Because the stroke is 185 mm, side-load stress is moderate, but the 25 mm rod diameter handles standard loads well; ensure external guides support any heavy off-center loads. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air—use an external rod lock or a SAIL/BSAI cylinder for pneumatic locking. For an exact ISO 15552 replacement, match the 100 mm bore, 185 mm stroke, 40 mm adjustment, PT G1/2 port, and SUS420J2 rod material.
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 SAIJ100AX185-40 FAQ
At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw lets you shorten the 185 mm nominal stroke by up to 40 mm, creating a usable travel window of 145 to 185 mm. The adjuster acts as a physical stop to set the end position and is not a locking device.
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