Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-20S
The AirTAC SAIJ100X500-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 500 mm nominal stroke that can be fine-tuned down by up to 20 mm, providing a precise 480-500 mm usable travel window. Delivering a robust 3927 N push force at 0.5 MPa, this bore size handles heavy industrial loads with ease.
This model includes a -S magnet for position sensing and is wired for AirTAC CMSE reed and DMSE electronic solid-state switches. The extruded aluminum barrel incorporates sensor grooves on both sides for flexible mounting. A PT tapered port thread ensures a tight pneumatic connection, while the carbon steel rod provides durable performance across demanding cycles.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAIJ100X500-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SAIJ100X500-20S Is Used
Machine Setup & Changeover
Dial in the exact 480-500 mm end position during product line changeovers without physically swapping out the entire actuator.
Variable End Stops
Adjust the retract stop on the fly to accommodate slightly different package sizes or pallet depths in material handling lines.
Heavy Load Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy jigs or fixtures, fine-tuning the final resting position mechanically.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-20S the Right Cylinder?
Choose this 100 mm bore when an 80 mm bore (2513 N push at 0.5 MPa) lacks the necessary thrust, but you want to avoid stepping up to a 125 mm size. The adjustable stroke is ideal for product changeovers or commissioning setups, allowing you to dial in the exact end position without swapping cylinders or adding external stops. To match this ISO 15552 cylinder for a replacement, verify the 500 mm stroke, 20 mm adjuster, G1/2 port, and -S magnet.
Because the nominal stroke is 500 mm, the M20x1.5 rod and carbon steel piston will experience leverage forces if the load is not fully supported. An external guide rail is strongly recommended to prevent excessive side-loading. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For true pneumatic locking, consider the SAIL or BSAI 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 SAIJ100X500-20S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster acts as a mechanical stop that lets you shorten the 500 mm nominal stroke by up to 20 mm, creating a 480-500 mm travel window. It only sets the end position and does not lock the load without continuous air pressure.
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