Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100S 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 SAIJ100X550-100S
The AirTAC SAIJ100X550-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 450 to 550 mm. Delivering 3927 N of push force at 0.5 MPa, it handles heavy-duty positioning with precision. The extruded aluminum barrel features sensor grooves on both sides, and because this is the -S variant, it includes a magnet ready for CMSE reed and DMSE electronic solid-state switches.
The 100 mm bore utilizes a G1/2 port and a robust 25 mm carbon steel rod with an M20x1.5 thread, providing excellent side-load resistance. The rear adjuster acts purely as a mechanical stop to dial in the end position during commissioning; it does not lock the load. For load-holding without live air, consider an AirTAC SAIL or BSAI cylinder.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100S |
|---|---|
| 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 SAIJ100X550-100S
| 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 SAIJ100X550-100S Is Used
Product Changeovers
Dial in the exact 450-550 mm end-stop during machine changeovers to accommodate different product lengths without replacing the cylinder.
Variable Diverting
Adjust the retract position on the fly to divert packages of varying sizes on a heavy-duty conveyor line.
Heavy Fixture Setup
Fine-tune the resting position of heavy pneumatic presses or fixtures during initial commissioning to ensure precise alignment.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-100S the Right Cylinder?
Choose this 100 mm bore when a 63 mm bore (1559 N push at 0.5 MPa) is insufficient for your tooling payload. The adjustable stroke is selected over a fixed SAI cylinder when you need variable end-stops for product changeovers, allowing you to trim up to 100 mm of travel without swapping the actuator. Configuration includes PT tapered ports, a 25 mm carbon steel rod, and the -S magnet option.
Because the 550 mm stroke is substantial, the unsupported rod length increases the risk of deflection; always use an external guide to prevent side-loading damage. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). It is dimensionally interchangeable per ISO 15552 with similar profile cylinders.
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 SAIJ100X550-100S FAQ
The rear adjuster allows you to shorten the nominal 550 mm stroke by up to 100 mm, giving a usable travel window of 450 to 550 mm. It acts as a mechanical stop to fine-tune the end position and does not lock the load without live air pressure.
At a 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
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