Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20S 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 SAIJ100X550-20S
The AirTAC SAIJ100X550-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a substantial 3927N push force at 0.5 MPa and features an integrated -S magnet compatible with CMSE reed and DMSE electronic sensors for precise position feedback. The extruded aluminum barrel design includes sensor grooves on both sides, streamlining switch installation.
This specific SKU features a 550 mm nominal stroke paired with a 20 mm adjustment screw, creating a 530-550 mm usable travel window. This built-in adjuster allows you to fine-tune the retract end position at commissioning without adding external stops. The carbon steel rod and M20x1.5 rod thread offer high structural rigidity, while the PT tapered port threads ensure a tight, leak-free pneumatic connection.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20S |
|---|---|
| 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 SAIJ100X550-20S
| 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 SAIJ100X550-20S Is Used
Machine Changeover
Dial in the 530-550 mm retract position precisely during product size transitions without swapping cylinders or repositioning external physical stops.
Assembly Pressing
Leverage the 3927N thrust at 0.5 MPa for pressing operations while using the 20 mm adjuster to fine-tune the final pressing depth.
Automated Conveying
Use the -S magnet with DMSE solid-state sensors to confirm retraction across the adjustable travel window in high-speed material handling systems.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20S the Right Cylinder?
Choose this 100 mm bore when your application requires higher thrust than the 80 mm version (which provides 2513N push force at 0.5 MPa) but does not need the full 6136N output of the 125 mm class. The adjustable 530-550 mm travel window is ideal for machinery requiring exact end-position tuning during product changeover. Because the 550 mm stroke is substantial, an external guide is recommended to support the load and prevent excessive side-loading on the M20 rod.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 550 mm base stroke, 20 mm adjustment range, G1/2 port, and -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Note that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For true pneumatic locking, select the SAIL or BSAI series instead.
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 SAIJ100X550-20S FAQ
At 0.5 MPa, this 100 mm bore cylinder provides 3927N of push force and 3681N of pull force. If operated at 0.7 MPa, the push force increases to 5497N.
The rear adjuster screw lets you trim the effective stroke back by up to 20 mm, creating a 530-550 mm usable travel window. It acts as a mechanical stop to fine-tune the end position and is not a lock that holds the load without air pressure.
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