Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20S
The AirTAC SAIJ100X900-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927 N of push force at 0.5 MPa. It features a carbon steel piston rod and a PT tapered port. Because of the 20 mm adjustment code, you can fine-tune the effective travel anywhere within an 880-900 mm window during commissioning without swapping hardware.
This 900 mm stroke length requires careful attention to side-loading; an external guide is recommended to support the long unsupported rod. The integrated magnet (-S) supports position sensing via AirTAC CMSE reed or DMSE electronic switches fitted into the dual sensor grooves. The rear adjuster acts purely as a travel stop to set deceleration, not as a lock to hold the load without live air.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAIJ100X900-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SAIJ100X900-20S Is Used
Product Changeover
Dial in the 880-900 mm travel window during format changes on packaging lines, avoiding the need to physically swap out long-stroke cylinders.
End-Position Tuning
Fine-tune the exact retract position on large presses, using the rear stopper to absorb kinetic energy alongside the standard air cushions.
Long-Stroke Assembly
Drive large components over 900 mm with 3927 N of thrust at 0.5 MPa, relying on external guides to support the extended rod.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20S the Right Cylinder?
Choose this 100 mm bore when the 80 mm class (2513 N push at 0.5 MPa) is insufficient, but the 125 mm bore (6136 N) would be excessive overkill. An adjustable stroke is ideal for machinery requiring variable end-stops or product changeovers, whereas a fixed SAI cylinder suits static setups. If your application requires holding a load without continuous air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a locking device.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 100 mm bore, 900 mm stroke, 20 mm adjustment, PT port thread, and the -S magnet option. Mounting choices are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Given the 900 mm stroke, always pair it with an external guide to prevent rod side-load damage.
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 SAIJ100X900-20S 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 screw allows you to shorten the 900 mm nominal stroke by up to 20 mm, providing an effective usable travel window of 880-900 mm. This stopper sets the end position but does not lock the load without live air pressure.
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