Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX280-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 280mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke280 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40S
The AirTAC SAIJ100X280-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 280 mm stroke that can be dialed back by up to 40 mm, creating a 240-280 mm usable travel window for precise end-position tuning during commissioning.
This unit features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports position detection via AirTAC CMSE reed or DMSE electronic solid-state switches. The rear adjustment screw acts purely as a travel stop to fine-tune deceleration and end limits without adding external stops.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 280 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×280 | 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 SAIJ100AX280-40S Is Used
Machine Setup & Changeover
Dial in the exact 240-280 mm end-stop position during machine commissioning or product size changes without swapping out the physical cylinder.
Variable End-Stop Positioning
Adjust the retract travel limit on the fly to accommodate different package sizes or diverter strokes on a processing line.
End-Position Tuning
Fine-tune the final deceleration point and mechanical stop location to perfect a process without relying on hard external bolt-on stops.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX280-40S the Right Cylinder?
The SAIJ series is selected over a fixed-stroke SAI cylinder when you need to trim the travel window on the fly without physically swapping the actuator.
Because the nominal stroke is 280 mm, an external guide is recommended to manage side loads on the 25 mm rod, as long unsupported strokes can induce bending moments. To replace this cylinder with an ISO 15552 equivalent, match the 100 mm bore, 280 mm stroke, 40 mm adjustment range, PT tapered ports, and the -S magnet. Remember that the rear adjuster is a stop, not a lock; for load-holding without live air pressure, specify an AirTAC SAIL or BSAI series cylinder. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100AX280-40S FAQ
At 0.7 MPa, the push force increases to 5497 N.
The SAIJ100X280-40-S has a rear adjusting screw that allows you to shorten the effective stroke by up to 40 mm from the nominal 280 mm, resulting in a usable travel window of 240-280 mm. The adjuster acts as a mechanical stop and does not lock the load without live air pressure.
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