Airtac SAIJ100 Adjustable Cylinder SAIJ100AX55-20S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX55-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 55mm 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
- Stroke55 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 SAIJ100AX55-20S
The AirTAC SAIJ100X55-20-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 55 mm stroke that can be dialed back by up to 20 mm, creating a precise 35-55 mm usable travel window for commissioning without external stops. This configuration includes a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and a PT tapered port thread.
The integrated adjuster acts purely as a mechanical stop to set the retraction end-position and cannot hold the load without live air pressure. For position holding, a SAIL or BSAI variant is required. This SAIJ model includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, which mount directly into the dual-side sensor grooves on the extruded aluminum barrel. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX55-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX55-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 55 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 SAIJ100AX55-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×55 | 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 SAIJ100AX55-20S Is Used
End-Position Tuning
Dial in the exact 35 to 55 mm retraction point during machine commissioning to accommodate varying material thicknesses without adding external stopper blocks.
Product Changeover
Quickly adjust the effective stroke on packaging lines when switching to a new product size, leveraging the 20 mm adjustment range to minimize downtime.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX55-20S the Right Cylinder?
Select this 100 mm bore cylinder when an application demands high thrust (3927 N at 0.5 MPa, up to 7068 N at 0.9 MPa) alongside variable end-stop positioning. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas a 125 mm bore provides 6136 N for heavier loads. The adjustable stroke is ideal for machine setups requiring fine-tuning during product changeovers, avoiding the need to swap out a fixed-stroke SAI cylinder. When matching ISO 15552 replacements, verify the 100 mm bore, 55 mm nominal stroke, 20 mm adjustment, G1/2 port, and -S magnet.
Because the 25 mm rod and M20x1.5 thread provide robust side-load capacity, this cylinder performs well in dynamic setups, though any stroke over 300 mm would necessitate an external guide. The rear screw adjuster and variable air cushions manage end-of-stroke deceleration, but remember that a plain SAIJ does not function as a lock or brake. For load-holding without continuous air pressure, consider the BSAI clamp-lock or SAIL pneumatic lock 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 SAIJ100AX55-20S FAQ
At its maximum rated pressure of 1.0 MPa, it delivers up to 801 kgf.
The rear adjuster screw lets you shorten the 55 mm nominal stroke by up to 20 mm, providing a usable travel window of 35 to 55 mm. The adjuster acts as a mechanical stop to fine-tune the end position and does not lock the load without live air pressure.
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