Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-40S 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 SAIJ100AX120-40S
The AirTAC SAIJ100X120-40-S is a double-acting ISO 15552 profile cylinder featuring a rear mechanical adjuster that allows you to trim the effective travel back by up to 40 mm. This yields a usable stroke window of 80 to 120 mm, letting you dial in the exact end position during commissioning without swapping out the barrel or adding external stops. It delivers substantial thrust, pushing with 3927 N at 0.5 MPa and 5497 N at 0.7 MPa.
Built with a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance, this unit includes a piston magnet for non-contact sensing via AirTAC CMSE reed or DMSE solid-state switches. The extruded aluminum body integrates sensor grooves on both sides, and the mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that the rear adjuster acts only as a travel stop; it does not lock the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-40S |
|---|---|
| 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 SAIJ100AX120-40S
| 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 SAIJ100AX120-40S Is Used
Product Changeovers
Dial in the new end position for varying package sizes on a packaging line using the 40 mm adjustment window, avoiding physical cylinder swaps.
Machine Setup
Fine-tune the retract stop during initial commissioning to achieve precise mechanical alignment without adding external bumpers.
Variable End Stops
Provide a flexible 80 to 120 mm travel range on automated assembly equipment to accommodate multiple part heights.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-40S the Right Cylinder?
Selecting this 100 mm bore over the neighbouring 80 mm variant significantly upgrades your force capacity, stepping up from 2513 N to 3927 N of push force at 0.5 MPa. An adjustable stroke is ideal for machine changeovers where product sizes vary, giving you a 40 mm trim window to fine-tune the retract end. If your application requires the load to be held mechanically without continuous air, consider the SAIL or BSAI series, as the SAIJ adjuster is strictly a positioning stop.
For a true ISO 15552 dimensional replacement, match the 100 mm bore, 120 mm stroke, 40 mm adjustment, PT tapered port thread, and the -S magnet requirement. The 25 mm rod and M20x1.5 thread provide robust joint integrity, but if your layout extends the stroke to 300 mm or more, you must use an external guide to prevent excessive side-loading on the rod.
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 SAIJ100AX120-40S FAQ
At an operating pressure of 0.5 MPa, 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 nominal 120 mm stroke by up to 40 mm, creating a usable travel window of 80 to 120 mm. The adjuster acts as a physical stop for end-position tuning and is not a locking mechanism.
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