Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 120mm 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
- Stroke120 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-50S
The AirTAC SAIJ100X120-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 3927N of push force at 0.5MPa and features a 120mm nominal stroke that can be fine-tuned down by up to 50mm, yielding a usable travel window of 70-120mm. This built-in adjustability allows operators to dial in exact retract end positions during commissioning without adding external stopper blocks.
This SKU includes a SUS420J2 stainless steel rod for improved corrosion resistance and a magnetic piston for position sensing. The extruded aluminum barrel carries sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic switches. Fluid ports are PT tapered G1/2, and the standard variable air cushion at both ends manages end-of-stroke deceleration.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 120 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 SAIJ100AX120-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×120 | 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 SAIJ100AX120-50S Is Used
Product Changeovers
Quickly modify the retract end position within the 70-120mm window during packaging format changes without replacing hardware.
Machine Setup
Fine-tune the final resting position of heavy actuators at commissioning to achieve exact alignment without external stoppers.
Variable End Stops
Provide adaptable retract limits for automated assembly stations requiring frequent adjustments to accommodate different part sizes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-50S the Right Cylinder?
Choose this 100mm bore when an application requires substantial thrust, stepping up from a 63mm bore that provides 1559N at 0.5MPa. The adjustable stroke is ideal for product changeovers on a line, letting you shift the retract stop within the 70-120mm window rather than swapping the entire cylinder for a fixed-stroke SAI unit. To match this cylinder for an ISO 15552 replacement, specify the 100mm bore, 120mm stroke, 50mm adjustment, PT G1/2 port, and the -S magnet.
Because the rear adjuster acts only as a mechanical stop and the air cushion provides deceleration, neither will hold a load securely without live air pressure. For true load-holding requirements, consider an external rod lock or the AirTAC SAIL pneumatic lock cylinder. The 25mm rod and M20x1.5 thread offer robust side-load capacity, though any stroke over 300mm would still require an external guide.
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 SAIJ100AX120-50S FAQ
At 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7MPa, the push force increases to 5497N.
The rear adjuster screw allows you to shorten the 120mm nominal stroke by up to 50mm, creating a usable travel window of 70-120mm. It functions as a mechanical stop and does not lock the load without air pressure.
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