Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-30
The AirTAC SAIJ100X140-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 110-140 mm usable travel window, allowing you to dial back the nominal 140 mm stroke by up to 30 mm during commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles substantial loads while utilizing a G1/2 port and an M20x1.5 rod thread.
This unit incorporates a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed and DMSE electronic switches if a magnet is added later. Mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 140 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 SAIJ100AX140-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×140 | 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 SAIJ100AX140-30 Is Used
Machine Changeover
Dial in the 110-140 mm travel window on the fly when switching a packaging line between different product sizes without physically replacing the actuator.
End-Stop Calibration
Fine-tune the retraction end position during initial setup to perfectly time a heavy 3927 N press operation, avoiding the need for external mechanical stops.
Variable Positioning
Adjust the effective stroke within the 30 mm range to accommodate varying material thicknesses in a clamping or pressing fixture.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-30 the Right Cylinder?
Choose this 100 mm bore when the 80 mm variant (providing 2513 N push at 0.5 MPa) cannot meet your thrust requirements. The SAIJ100X140-30 is selected when a fixed-stroke SAI cylinder cannot accommodate product changeovers, as the rear stopper screw allows precise end-position tuning without swapping out the entire actuator. It uses PT tapered port threads.
Remember that the rear adjuster acts only as a mechanical travel stop, not a lock; it cannot hold a load without live air pressure. For positive load-holding without continuous air, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock. The 140 mm stroke is well below the 1500 mm maximum, so standard side-load concerns are minimal, though long unsupported strokes still need 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 SAIJ100AX140-30 FAQ
It features a rear adjusting screw that acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 30 mm. This creates a usable travel window of 110 to 140 mm, which is ideal for fine-tuning the end position at commissioning without changing the cylinder.
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. It can deliver up to 5497 N of push force at 0.7 MPa.
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