Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75 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 SAIJ100X550-75
The AirTAC SAIJ100X550-75 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 provides robust linear motion using a 25 mm carbon steel rod and G1/2 PT ports. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This adjustable-stroke design allows you to fine-tune the retract end position during commissioning without adding external stops. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75 |
|---|---|
| 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 SAIJ100X550-75
| 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 SAIJ100X550-75 Is Used
Product Changeover Tuning
Dial in the end-stop up to 75 mm during product size transitions on the line, eliminating the need to physically swap cylinders for different travel requirements.
Variable End-Stop Positioning
Set precise retract positions for conveyor sorting or diverter arms where the exact material drop-off point requires frequent mechanical adjustment.
Long-Stroke Assembly Press
Leverage the 3927 N push force across a 475-550 mm window to seat large components, using the rear stop to fine-tune the final pressing depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-75 the Right Cylinder?
Choose this 100 mm bore cylinder when an 80 mm bore (2513 N push at 0.5 MPa) lacks the necessary thrust, but a 125 mm bore would be excessive. The 75 mm adjustment range is ideal for product changeovers on automated lines, allowing you to dial in the exact end-stop on the fly rather than swapping out a fixed-stroke SAI cylinder. At 550 mm of stroke, the 25 mm rod handles high thrust, but an external guide is recommended to manage side loads and prevent rod deflection over the long travel distance.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 550 mm nominal stroke, 75 mm adjustment, G1/2 PT ports, and the required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2). This unit lacks a magnet; add the -S option if you need CMSE reed or DMSE solid-state sensors.
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 SAIJ100X550-75 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 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to shorten the effective stroke from its nominal 550 mm down to 475 mm. It functions as a mechanical travel stop for end-position tuning and does not lock or hold the load without continuous air pressure.
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