Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 40mm 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
- Stroke40 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-30
The AirTAC SAIJ100X40-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, designed to deliver robust thrust in compact spaces. With a 100mm bore, it generates 3927N of push force at 0.5MPa and 7068N at 0.9MPa. The integrated rear adjusting screw allows you to trim the nominal 40mm stroke back by up to 30mm, creating a precise 10-40mm usable travel window for fine-tuning during commissioning.
This adjustable stopper lets you dial in the exact end position without swapping out the cylinder or fabricating external stops. It features a standard carbon steel piston rod with an M20x1.5 thread, a G1/2 port, and variable air cushions at both ends to manage kinetic energy. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is specified later.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 40 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 SAIJ100X40-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SAIJ100X40-30 Is Used
Short-Stroke Pressing
Applies up to 7068N of push force at 0.9MPa for pressing bearings or pins, using the 30mm adjuster to set the exact bottoming depth without machining custom spacers.
Machine Commissioning
Allows engineers to fine-tune the 10-40mm travel window during initial setup, ensuring precise end-position alignment before finalizing the pneumatic circuit.
Product Changeover
Facilitates rapid adjustments on packaging lines when product sizes change, dialing the stroke back by up to 30mm to accommodate varying material thicknesses.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-30 the Right Cylinder?
Choose this 100mm bore model when an application requires substantial force—such as 3927N push at 0.5MPa—over a very short, adjustable distance. If you need less force, stepping down to a 63mm bore yields 1559N, but the SAIJ100X40-30 provides the necessary rigidity for heavier loads within its 10-40mm travel window. The rear screw acts purely as a travel stop to set deceleration, not as a lock; it cannot hold a load without live air pressure. For load-holding requirements, consider an external pilot-operated check valve or the SAIL/BSAI locking cylinder variants.
When replacing an ISO 15552 cylinder, match the 100mm bore, 40mm stroke, 30mm adjustment, G1/2 port (PT tapered thread type), and the required mounting set. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR options. Because the stroke is under 300mm, side-load stress is minimal, but the 25mm rod diameter still handles lateral forces better than smaller bores.
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 SAIJ100X40-30 FAQ
At 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.9MPa, the push force increases to 7068N.
The rear adjuster screw allows you to shorten the 40mm nominal stroke by up to 30mm, providing a usable travel window of 10-40mm. This stopper sets the travel end and works with the air cushion for deceleration, but it does not lock the load without continuous air pressure.
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