Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-30 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 SAIJ100X550-30
The AirTAC SAIJ100X550-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 5497N of push force at 0.7 MPa. It features a carbon steel piston rod and PT tapered port threads. By turning the external rear stopper screw, you can trim the effective travel back by up to 30 mm, creating a precise 520-550 mm usable stroke window without swapping out the entire actuator.
This on-machine fine-tuning is ideal for dialing in end positions during commissioning or product changeovers. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic solid-state switches if a magnet is specified later. Mounting options include the standard SAIJ subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-30 |
|---|---|
| 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 SAIJ100X550-30
| 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 SAIJ100X550-30 Is Used
Machine Changeover
Quickly dial in the 520-550mm stroke window when switching between product sizes on the line, using the rear screw to set the new retracted end position without changing hardware.
End-Position Tuning
Fine-tune the final resting position of heavy 5497N loads during commissioning, absorbing mechanical tolerance variations directly at the cylinder's rear stopper.
Variable End Stops
Provide adjustable mechanical stops for automated assembly equipment, allowing operators to trim up to 30mm of travel to accommodate different fixture heights.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-30 the Right Cylinder?
Choose this 100mm bore when you need heavy thrust that a 80mm bore (3518N push at 0.5 MPa) cannot provide, but step up to a 125mm cylinder (6136N at 0.5 MPa) only if your application strictly demands even greater force. The adjustable 30mm end-stop is selected over a fixed-stroke SAI cylinder when you need variable positioning or final setup tolerance at the machine. Because the nominal stroke is 550mm, an external guide is recommended to prevent excessive side-loading on the 25mm rod.
For a true ISO 15552 dimensional replacement, match the 100mm bore, 550mm stroke, 30mm adjustment, PT port thread, and required mounting bracket. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding without pressure, consider an AirTAC SAIL locking cylinder or an external rod lock.
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 SAIJ100X550-30 FAQ
At a standard operating pressure of 0.7 MPa, this 100mm bore cylinder provides 5497N of push force and 3681N of pull force. It can reach a maximum push force of 7068N at 0.9 MPa.
The rear adjuster screw acts as an external mechanical stop that allows you to shorten the 550mm nominal stroke by up to 30mm, providing an effective usable travel range of 520-550mm. It only sets the end-of-travel position and does not lock the load without continuous air pressure.
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