Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 550mm 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
- Stroke550 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100
The AirTAC SAIJ100X550-100 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 550 mm nominal stroke that can be fine-tuned backward by up to 100 mm, creating a precise 450 to 550 mm usable travel window for product changeovers. Delivering 3927 N of push force at 0.5 MPa, it handles heavy positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later.
This 100 mm bore unit features a 25 mm carbon steel rod with an M20x1.5 thread, designed to manage substantial side loads, though a 550 mm stroke still requires an external guide for optimal stability. The rear adjuster acts purely as a mechanical stop to set the end position and relies on the built-in air cushions for deceleration; it does not lock the load without live air pressure. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 550 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 SAIJ100X550-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×550 | 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 SAIJ100X550-100 Is Used
Press Fitment Tuning
Dial in the exact 450-550 mm travel during machine commissioning to achieve perfect press depths without swapping out the entire cylinder.
Product Size Changeover
Quickly adjust the rear stopper to accommodate varying package sizes on a packaging line, reducing downtime between production runs.
Heavy Material Handling
Leverage the 3927 N push force at 0.5 MPa to push heavy pallets or workpieces into position, relying on the built-in air cushions for smooth stops.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100 the Right Cylinder?
Choose this 100 mm bore cylinder when your application requires heavy thrust between the 50 mm bore class (982 N push at 0.5 MPa) and the 125 mm class (6136 N push at 0.5 MPa). The 100 mm bore delivers 3927 N at 0.5 MPa, making it ideal for pressing or moving substantial masses. The adjustable-stroke feature is selected over a fixed SAI cylinder when you need to dial in the exact end-of-stroke position during commissioning without adding external stopper blocks.
For setup, specify the PT tapered port threads, your required mounting style, and note that this configuration uses a standard carbon steel rod without a magnet. Because the nominal stroke is 550 mm, an external guide is strongly recommended to prevent rod binding under side loads. If the load must be held in place without continuous air pressure, the rear adjuster is insufficient; consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external pilot-operated check valve.
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 SAIJ100X550-100 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder 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 adjuster screw allows you to mechanically shorten the 550 mm nominal stroke by up to 100 mm, providing a usable travel window of 450 to 550 mm. It functions as an end-position stop, not a load-holding lock.
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