Airtac SAIJ100 Adjustable Cylinder SAIJ100AX900-40S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX900-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 900mm 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
- Stroke900 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 SAIJ100AX900-40S
By turning the rear stopper screw, you can trim the nominal 900mm travel back by up to 40mm, creating an 860-900mm usable window for precise end-position tuning during commissioning. This eliminates the need to physically swap out the cylinder or bolt on external stops when dialing in a machine's final stroke.
Built with a SUS420J2 stainless steel rod (material option A) and PT tapered port threads, this model is tailored for environments demanding higher corrosion resistance. The extruded aluminum barrel features sensor grooves on both sides, and because this SKU includes a magnet (-S), it works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches for position feedback. The integrated adjustable air cushions at both ends absorb the kinetic energy of this long-stroke movement, though they act strictly as deceleration stops and do not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX900-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX900-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAIJ100AX900-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SAIJ100AX900-40S Is Used
Variable End-Stop Machining
Dial in the exact 860-900mm clamping depth on custom jigs without swapping cylinders, using the rear screw to fine-tune the final position for different part lengths.
Product Changeover Lines
Quickly adjust the stroke window during product size transitions on a conveyor sorting line, setting the retract position precisely without adding external mechanical stops.
Commissioning Stroke Tuning
Perfect the end-of-travel position during machine setup, using the 40mm adjustment range to compensate for mechanical tolerances and sensor placement variations.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX900-40S the Right Cylinder?
The adjustable stroke is ideal for product changeovers on a line where the exact end-of-stroke varies slightly by part size, letting you fine-tune the 860-900mm window on the fly instead of maintaining a stock of multiple fixed-length SAI cylinders.
Because the 900mm stroke is quite long, the 25mm rod diameter carries a significant side-load risk if the piston rod is left unsupported; for this span, an external guide rail is highly recommended to prevent premature seal wear. To replace an existing ISO 15552 cylinder, match the 100mm bore, 900mm stroke, 40mm adjustment, PT ports, and the -S magnet, noting that SAIJ uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. If your application requires true load-holding without continuous air pressure, step up to a SAIL (air-released lock) or BSAI (clamp-lock) cylinder, as the SAIJ rear adjuster is only a travel stop, not a brake.
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 SAIJ100AX900-40S FAQ
The maximum thrust is 801 kgf at 1.0 MPa.
The rear adjuster screw acts as an external stopper that lets you shorten the effective travel from the nominal 900mm down to 860mm. This provides a 40mm usable tuning window at the retract end without changing the cylinder's physical mounting.
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