Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75S 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 SAIJ100X550-75S
The AirTAC SAIJ100X550-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 100mm bore and a 550mm stroke that can be dialed back by up to 75mm, providing a precise 475-550mm usable travel window for product changeovers. Delivering 7068N of push force at 0.9MPa, it integrates a standard carbon steel rod and a PT tapered G1/2 port.
This -S variant includes a magnet for position sensing with AirTAC CMSE reed and DMSE solid-state switches. The extruded aluminum barrel includes sensor grooves on both sides. The rear adjuster acts purely as a mechanical stop to fine-tune the end position without adding external stops, while the standard air cushions handle deceleration.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75S |
|---|---|
| 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 SAIJ100X550-75S
| 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 SAIJ100X550-75S Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 475-550mm window during machine commissioning without swapping out the entire cylinder.
Product Size Changeovers
Quickly adapt the stroke length on packaging lines to handle different carton sizes by adjusting the rear stopper.
Heavy Load Positioning
Leverage the 7068N push force to move heavy pallets or fixtures, using the adjustable travel to fine-tune the stopping point.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75S the Right Cylinder?
Select this 100mm bore unit when an application requires heavy thrust (7068N at 0.9MPa) alongside variable end-position tuning. If your setup only needs 3927N of push force at 0.9MPa, stepping down to the 80mm bore saves space. Choose this adjustable-stroke model over a fixed SAI cylinder when you need to fine-tune the retract distance during commissioning or adapt to different product sizes on the fly.
For dimensionally interchangeable ISO 15552 replacements, match the 100mm bore, 550mm nominal stroke, 75mm adjustment range, PT G1/2 port, and the -S magnet requirement. Because the 550mm stroke is long, an external guide is recommended to manage side-load and prevent rod deflection. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
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 SAIJ100X550-75S FAQ
At an operating pressure of 0.9MPa, this 100mm bore cylinder generates 7068N of push force and 3681N of pull force. It can reach a maximum thrust of 801kgf at 1.0MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 550mm down to 475mm. It only sets the travel end and does not lock the load without live air; for load-holding, use a SAIL or BSAI cylinder.
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