Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-20S
The AirTAC SAIJ100X290-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 270-290 mm usable travel window by allowing you to trim the nominal 290 mm stroke back by up to 20 mm during commissioning. The carbon steel piston rod and M20x1.5 rod thread provide robust resistance to side loads, which is critical for this longer stroke length.
Delivering 3927 N of push force and 3681 N of pull force at 0.5 MPa, this bore size handles heavy loads. The extruded aluminum barrel includes sensor grooves on both sides, and because this configuration includes a magnet (-S), it supports AirTAC CMSE reed and DMSE electronic solid-state switches for precise position detection. The PT tapered port thread ensures a reliable, sealed connection.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 290 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 SAIJ100X290-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×290 | 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 SAIJ100X290-20S Is Used
Machine Setup Changeover
Fine-tune the 270-290 mm retract end-stop during product family transitions without physically swapping the cylinder or repositioning external hard stops.
Variable End Positioning
Dial in the exact clamping or lifting position on a conveyor line by trimming the stroke up to 20 mm to compensate for mechanical wear or material thickness.
Heavy Assembly Pressing
Leverage the 3927 N push force at 0.5 MPa to seat heavy components, using the adjustable stop to precisely control the final pressing depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-20S the Right Cylinder?
Select this 100 mm bore when an application requires substantial thrust—stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, whereas stepping up to a 125 mm bore increases it to 6136 N. Choose this adjustable-stroke SAIJ model over a fixed SAI when you need to fine-tune the retract end position on the fly or accommodate product-size changeovers without adding external stops.
For ISO 15552 replacement matching, verify the 100 mm bore, 290 mm stroke, 20 mm adjustment range, PT G1/2 port, and the -S magnet option. Because the stroke is 290 mm, ensure an external guide supports the load to prevent excessive side loading on the rod. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an AirTAC SAIL or BSAI series cylinder.
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 SAIJ100X290-20S FAQ
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective stroke by up to 20 mm. This creates a 270-290 mm usable travel window, allowing you to fine-tune the end position at commissioning without changing the cylinder.
At a 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. The maximum theoretical force at 1.0 MPa is 801 kgf.
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