Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30 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 SAIJ100BX55-30
The AirTAC SAIJ100X55-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 55 mm nominal stroke by up to 30 mm. This creates a highly flexible 25-55 mm usable travel window, perfect for fine-tuning end positions at commissioning without swapping the cylinder or adding external stops. In the 100 mm bore class, it delivers substantial thrust, providing 3927 N push and 3681 N pull force at 0.5 MPa.
This specific SKU features a SUS304 stainless steel rod (option B) for superior corrosion resistance in harsh environments. It uses PT tapered port threads and lacks a magnet, meaning position sensing is handled externally rather than with internal CMSE or DMSE switches. The rear adjuster acts purely as a travel stop to set deceleration, not as a lock, so live air pressure is required to hold the load.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30 |
|---|---|
| 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 SAIJ100BX55-30
| 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 SAIJ100BX55-30 Is Used
Variable End-Stop Forming
Dial in the exact 25-55 mm travel distance for pressing or forming different material thicknesses without changing out the cylinder.
Machine Setup Commissioning
Fine-tune the retract position during initial machine build to perfectly align tooling, absorbing mechanical tolerances on the fly.
Product Size Changeover
Quickly adjust the stroke stop when a production line switches to a new product size, minimizing downtime for mechanical reconfiguration.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30 the Right Cylinder?
Select this 100 mm bore adjustable cylinder when your application requires high force (up to 7068 N push at 0.9 MPa) combined with precise, variable end-stops. If you need less force and a smaller footprint, stepping down to an 80 mm bore yields 2513 N push at 0.5 MPa. The SAIJ is chosen over a fixed SAI cylinder when product sizes change on a line and the exact end-of-stroke needs on-the-fly mechanical tuning. For exact ISO 15552 interchangeability, match the 100 mm bore, 55 mm stroke, 30 mm adjustment, PT port threads, and no-magnet configuration. Note that the rear adjuster and air cushions only manage travel ends; for true load-holding without live air, select an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ100BX55-30 FAQ
The rear adjuster screw lets you mechanically shorten the 55 mm nominal stroke by up to 30 mm, providing a usable travel window of 25-55 mm. It acts as a physical stop to tune the end position without needing external stops.
At 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 801 kgf.
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Standard models usually ship in 3-4 days.
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