Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-40S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX400-40S 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 SAIJ100AX400-40S
The AirTAC SAIJ100X400-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. This built-in adjustability allows you to dial in end positions during commissioning without swapping out the entire unit or adding bulky external stops.
This specific SKU is configured with an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE solid-state sensors housed in the dual-side extruded barrel grooves. The G1/2 port and M20x1.5 rod thread provide ample flow and structural rigidity, while the rear adjuster acts strictly as a travel stop, not a load-holding lock. For applications requiring position retention without live air pressure, consider the SAIL or BSAI variants.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-40S |
|---|---|
| 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 SAIJ100AX400-40S
| 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 SAIJ100AX400-40S Is Used
Machine Setup & Changeover
Fine-tune the 360-400mm travel window during product line changeovers to accommodate varying package sizes without physically replacing the cylinder.
Variable End-Stop Positioning
Dial in the exact retraction point for a diverter or gate on a conveyor system, using the rear stopper to adjust the 400mm stroke precisely to the process needs.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-40S the Right Cylinder?
The 40mm adjustment range is highly valuable on long 400mm strokes where machine setup or product changeover requires variable end-stops. Because the stroke is 400mm, the M20x1.5 rod and thread handle substantial side loads, but an external guide rail is still recommended to prevent rod binding over this extended travel distance.
When matching this adjustable cylinder to an ISO 15552 interchangeable footprint, verify your exact parameters: a 100mm bore, 400mm nominal stroke, 40mm adjustment range, PT tapered port threads, and a magnet for CMSE or DMSE sensors. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, intentionally omitting FB, CA, CB, and CR brackets. Remember that the rear screw and air cushions only decelerate the load; they will not hold it securely without live air.
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 SAIJ100AX400-40S FAQ
The rear adjusting screw acts as an external stopper that lets you trim the effective travel back by up to 40mm from the 400mm nominal stroke, providing a 360-400mm usable window. It is a travel stop, not a lock, and cannot hold the load without continuous air pressure.
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