Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-20 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 SAIJ100X55-20
The AirTAC SAIJ100X55-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 55 mm stroke that can be fine-tuned down by up to 20 mm, yielding a usable travel window of 35-55 mm to perfectly dial in end positions during machine commissioning. Delivering 3927 N of push force at 0.5 MPa, it is built with a 25 mm carbon steel rod and M20x1.5 thread to handle high side loads.
This model uses a PT tapered G1/2 port and relies on variable air cushions at both ends to decelerate the load. The rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, and its extruded aluminum barrel features sensor grooves on both sides for flexible CMSE or DMSE switch placement.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-20 |
|---|---|
| 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 SAIJ100X55-20
| 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 SAIJ100X55-20 Is Used
Product Changeovers
Dial in the 35-55 mm travel window during rapid product size changes without physically swapping the cylinder or adding external stop blocks.
End-Position Tuning
Fine-tune the exact retract position during machine commissioning to perfect pressing or clamping depths on the fly.
Heavy Clamping Jigs
Leverage the 3927 N push force at 0.5 MPa for robust clamping, using the rear stopper to set precise material engagement limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-20 the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust—stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while this 100 mm model provides 3927 N. The adjustable-stroke design is ideal for product changeovers where the exact end-of-travel position varies slightly, eliminating the need to swap out a fixed-stroke SAI cylinder or bolt on external stops. Ensure your setup includes an external guide if side loads are high, and remember that for load-holding without continuous air, you must use a SAIL lock, BSAI clamp-lock, or external rod lock rather than relying on the SAIJ adjuster.
To replace an ISO 15552 cylinder, match the 100 mm bore, 55 mm stroke, 20 mm adjustment, PT G1/2 port, and your preferred mounting style. Because no magnet is specified for this SKU, position sensing requires a separate evaluation or a custom configuration.
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 SAIJ100X55-20 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 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective travel back by up to 20 mm. This creates a usable stroke window of 35-55 mm, allowing you to fine-tune the end position without replacing the cylinder.
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