Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75S 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 SAIJ100BX550-75S
The AirTAC SAIJ100X550-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 475 to 550 mm. Delivering 3927 N of push force at 0.5 MPa, it integrates a SUS304 stainless steel rod for corrosion resistance and a built-in magnet for position sensing. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This model uses PT tapered ports (G1/2) and accepts AirTAC CMSE reed and DMSE electronic sensors. The rear adjustment screw allows precise end-position tuning at commissioning without swapping hardware. The adjuster functions strictly as a travel stop to set deceleration, not as a lock to hold the load without live air.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75S |
|---|---|
| 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 SAIJ100BX550-75S
| 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 SAIJ100BX550-75S Is Used
Machine Changeover
Dial in the exact end-stop during product size transitions without physically replacing the cylinder or repositioning hard stops.
Variable End Positioning
Adjust the travel window from 475 to 550 mm to fine-tune where parts are pushed or gated on a moving line.
Assembly Press Tuning
Trim the stroke precisely during setup to control engagement depth, preventing damage to components.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75S the Right Cylinder?
Choose this 100 mm bore when an application requires 3927 N of push force at 0.5 MPa, stepping up from a 63 mm bore that offers 1559 N. The 75 mm adjustment range is ideal for product changeovers on a line, allowing you to dial back the 550 mm stroke to a 475 mm minimum without adding external stops. For fixed travel needs without commissioning tweaks, a standard SAI cylinder is sufficient.
When specifying a replacement, match the 100 mm bore, 550 mm stroke, 75 mm adjustment, PT port, and -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is 550 mm, an external guide is recommended to prevent excessive side-load on the 25 mm rod. For load-holding without live pressure, select a 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 SAIJ100BX550-75S 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 lets you shorten the 550 mm nominal stroke by up to 75 mm, creating a 475 to 550 mm travel window. It acts as a mechanical stop for end-position tuning and does not hold the load without air pressure.
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