Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-75S 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 SAIJ100AX120-75S
The AirTAC SAIJ100X120-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 45 to 120 mm. Delivering 3927 N of push force at 0.5 MPa, it is built to handle demanding positioning tasks. The extruded aluminum barrel features sensor grooves on both sides, and this -S variant includes a magnet for direct compatibility with AirTAC CMSE reed and DMSE electronic switches.
This model features a SUS420J2 stainless steel rod (material code A) and PT tapered port threads. The rear adjuster acts purely as a travel stop to fine-tune the retract position during commissioning; it is not a locking mechanism and will not hold a load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-75S |
|---|---|
| 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 SAIJ100AX120-75S
| 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 SAIJ100AX120-75S Is Used
Product Changeover
Quickly dial in the retract stroke from 45 to 120 mm when switching between product sizes on a packaging line, eliminating the need to swap out cylinders.
Machine Setup
Fine-tune the end-stop position during initial commissioning to achieve exact mechanical alignment without adding external spacers.
Variable End Stops
Provide adaptable retract limits for automated clamping stations where material thickness variations require frequent on-site adjustments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-75S the Right Cylinder?
Selecting this 100 mm bore cylinder makes sense when your application requires the 3927 N push force at 0.5 MPa and on-the-fly end-position tuning. If your setup only needs to move lighter loads, stepping down to an 80 mm bore provides 2513 N of push force. Conversely, heavier demands require the 125 mm bore at 6136 N. The adjustable stroke is chosen over a fixed SAI cylinder when you need to dial in the exact retract distance during product changeovers rather than machining external stop blocks.
To match this exact configuration as an ISO 15552 replacement, specify: 100 mm bore, 120 mm nominal stroke, 75 mm adjustment range, PT G1/2 port, and the -S magnet option. Mounting choices are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 120 mm stroke is relatively short for this bore size, side-load stress on the M20x1.5 rod thread is minimal, though external guides are always recommended for offset loads.
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 SAIJ100AX120-75S FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf.
The rear adjuster screw allows you to trim the effective stroke back by up to 75 mm from the 120 mm nominal length, creating a usable travel window of 45 to 120 mm. It acts as a physical stop and does not lock the position without continuous air pressure.
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