Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-50S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX400-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 400mm 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
- Stroke400 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 SAIJ100AX400-50S
The AirTAC SAIJ100X400-50-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 400 mm nominal stroke that can be fine-tuned backward by up to 50 mm, creating a precise 350-400 mm usable travel window.
This adjustable-stroke design allows operators to dial in exact end positions during commissioning or product changeovers without swapping the cylinder or adding external stops. The extruded aluminum barrel features sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic sensors. It supports a 30-800 mm/s speed range and includes adjustable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAIJ100AX400-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SAIJ100AX400-50S Is Used
Multi-Product Changeovers
Leverage the 350-400 mm adjustable travel window to switch end-stops for different product lengths on the same conveyor line without physically replacing the actuator.
Commissioning Fine-Tuning
Dial in the exact retraction point during machine setup using the rear stopper screw, avoiding the need to machine custom external spacers for the 400 mm stroke.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-50S the Right Cylinder?
Choose this 100 mm bore when an application demands high thrust—3927 N at 0.5 MPa or 5497 N at 0.7 MPa. If your process requires less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas moving up to a 125 mm bore provides 6136 N. The adjustable 50 mm window is ideal for lines running multiple product sizes, offering a built-in variable end-stop that fixed-stroke SAI cylinders cannot match.
When specifying this ISO 15552 dimensionally interchangeable cylinder, confirm the 100 mm bore, 400 mm stroke, 50 mm adjustment, PT port threads, SUS420J2 rod material, and -S magnet option. Because the stroke is 400 mm, the M20x1.5 rod should be guided externally to prevent excessive side-loading and premature seal wear. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For true load-holding without pressure, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
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 SAIJ100AX400-50S FAQ
If pressure is increased to 0.7 MPa, the push force rises to 5497 N.
The rear adjusting screw acts as a mechanical stop that trims the effective travel. For this 400 mm nominal stroke cylinder, the -50 code means you can shorten the stroke by up to 50 mm, giving a usable travel window of 350-400 mm. The adjuster only sets the end position; it does not lock or hold the load without continuous air pressure.
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