Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-50 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 SAIJ100AX140-50
The AirTAC SAIJ100X140-50 is a double-acting ISO 15552 profile cylinder engineered for applications requiring exact end-position tuning. Featuring a nominal 140 mm stroke, its integrated rear adjuster allows you to dial back the travel by up to 50 mm, creating a highly versatile 90-140 mm usable window. This bore size delivers substantial thrust, providing 5497 N of push force at 0.7 MPa, making it suitable for heavy-duty positioning tasks.
This unit is configured with an SUS420J2 stainless steel rod for enhanced durability against moisture and PT tapered port threads for a reliable pneumatic seal. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept AirTAC CMSE reed or DMSE electronic switches if a magnet is added later. It utilizes a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-50 |
|---|---|
| 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 SAIJ100AX140-50
| 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 SAIJ100AX140-50 Is Used
Variable End-Stop Forming
Dial in the exact 90-140 mm crush depth for press operations or forming tasks, allowing operators to change material thicknesses without re-mounting the actuator.
Product Changeover Diverters
Quickly adjust the stroke on packaging lines to handle different carton sizes, using the 50 mm trim range to reposition diverters for new product runs.
Heavy-Duty Machine Setup
Leverage the 5497 N push force at 0.7 MPa to move heavy fixtures, while fine-tuning the final resting position during equipment commissioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-50 the Right Cylinder?
Selecting this 100 mm bore cylinder is ideal when your application demands high force alongside variable end-stops, such as accommodating different product sizes on a single line without physically swapping the actuator. If your setup requires less force, stepping down to an 80 mm bore yields 3518 N of push at 0.7 MPa, whereas moving up to a 125 mm bore provides 8590 N. For this 140 mm stroke, the 25 mm rod diameter and M20x1.5 rod thread offer excellent rigidity and side-load resistance, though any application approaching or exceeding 300 mm of travel will require an external guide to protect the piston.
The rear screw mechanism acts solely as a travel stop to fine-tune deceleration and end position, not as a locking device. Because it is a double-acting cylinder, it cannot hold a load in place without continuous live air pressure. If your machinery requires true load-holding capability in the event of air loss, you should evaluate the SAIL air-released lock or BSAI clamp-lock variants instead of relying on the adjuster.
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 SAIJ100AX140-50 FAQ
At an operating pressure of 0.7 MPa, this 100 mm bore cylinder generates a push force of 5497 N and a pull force of 3681 N. At the maximum pressure of 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to shorten the effective travel from its nominal 140 mm down to a minimum of 90 mm. This provides a 50 mm tuning window to set the exact retract position without adding external stops.
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