Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-40 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke55 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-40
The AirTAC SAIJ100X55-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5 MPa. It features a 25mm carbon steel piston rod and a G1/2 PT tapered port. By integrating an external adjusting screw, this model allows you to fine-tune the effective travel within a 15-55mm window without swapping out the entire unit.
The rear stopper lets you dial in the exact end-position during commissioning or product changeovers, serving as a travel stop rather than a locking mechanism. Built with an extruded aluminum barrel housing sensor grooves on both sides, it accommodates AirTAC CMSE reed and DMSE electronic sensors. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-40 |
|---|---|
| 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 | 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 SAIJ100X55-40
| 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 SAIJ100X55-40 Is Used
End-Position Tuning
Dial in the exact retract distance within the 15-55mm window during machine commissioning to achieve precise positioning without adding external stops.
Product Changeover
Quickly adjust the stroke end by up to 40mm when switching product sizes on a line, minimizing downtime and avoiding cylinder replacement.
Assembly Pressing
Leverage the 3927N push force at 0.5 MPa for light pressing operations, using the rear screw to set the exact depth of travel for each batch.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-40 the Right Cylinder?
Choose this 100mm bore when an 80mm cylinder lacks thrust, as stepping down to an 80mm bore yields 2513N of push force at 0.5 MPa. The adjustable 15-55mm travel window is ideal for applications requiring variable end-stops or frequent machine setup, offering greater flexibility than a fixed-stroke SAI cylinder. To match an ISO 15552 replacement, verify the 100mm bore, 55mm stroke, 40mm adjustment, G1/2 port, and mounting style.
Because the stroke is relatively short at 55mm, side-loading is less of a concern than with longer strokes, but the 25mm rod still handles robust axial loads. Remember that the rear adjuster only sets the travel end and does not hold the load without live air; for true load-holding, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ100X55-40 FAQ
At 0.5 MPa, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. If you need higher force, operating at 0.7 MPa yields 5497N of push force.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the 55mm nominal stroke by up to 40mm. This creates a usable travel window of 15-55mm, which can be fine-tuned during setup without changing the cylinder.
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