Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-50 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 SAIJ100BX550-50
The AirTAC SAIJ100X550-50 is a double-acting ISO 15552 profile cylinder featuring a rear mechanical adjuster that trims the effective stroke. With a 550 mm nominal stroke and a 50 mm adjustment range, you can dial the usable travel window down to 500 mm during commissioning without adding external stops. It delivers 3927 N of push force at 0.5 MPa and utilizes a robust 25 mm SUS304 stainless steel rod to withstand side loading and resist corrosion.
This extruded aluminum profile cylinder includes variable air cushions at both ends to decelerate heavy loads smoothly across its 30-800 mm/s speed range. The rear adjuster acts strictly as a travel stop for end-position tuning, not a load-holding lock; maintaining position requires continuous live air. It uses a PT G1/2 port and supports AirTAC CMSE reed and DMSE electronic sensors via dual side sensor grooves when a magnet is specified.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-50 |
|---|---|
| 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 SAIJ100BX550-50
| 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 SAIJ100BX550-50 Is Used
Machine Setup Changeover
Fine-tune the retract end-position from 500 to 550 mm during product family changeovers without swapping out the entire cylinder.
Variable End-Stop Diverter
Adjust the stroke window on the fly to accommodate different package sizes on a sorting line, ensuring precise physical contact.
Heavy Load Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy pallets, using the 50 mm trim to perfect the final resting position.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-50 the Right Cylinder?
Choose this 100 mm bore when an 80 mm cylinder (providing 2513 N push at 0.5 MPa) cannot meet your thrust requirements, but a 125 mm bore is excessive. The 50 mm adjustment window is ideal for product changeovers on a packaging line, allowing you to shift the end-stop from 550 mm down to 500 mm rapidly. Because the nominal stroke is 550 mm, an external guide is recommended to prevent excessive side loading on the rod.
To match this ISO 15552 interchangeable cylinder, confirm the 100 mm bore, 550 mm stroke, 50 mm adjustment, PT G1/2 port, and your required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2). If your application demands load holding without live air pressure, consider the AirTAC SAIL or BSAI series instead of relying on the adjuster.
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 SAIJ100BX550-50 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. It can reach up to 7068 N push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 550 mm nominal stroke down to a 500 mm effective travel. It only sets the end position and does not lock the load without live air.
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