Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-100
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX155-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 155mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke155 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 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 SAIJ40 Adjustable Cylinder SAIJ40AX155-100
The AirTAC SAIJ40X155-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 155 mm stroke that can be dialed back by up to 100 mm, creating a highly flexible 55 to 155 mm usable travel window for exact end-position tuning.
This adjustable design eliminates the need to swap cylinders or add external stops during product changeovers. The rear screw acts purely as a travel stop and works alongside standard air cushions to set deceleration; it does not hold the load without live air. For load-holding without pressure, consider a SAIL or BSAI series cylinder.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 155 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 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 SAIJ40 Adjustable Cylinder SAIJ40AX155-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×155 | 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 SAIJ40 Adjustable Cylinder SAIJ40AX155-100 Is Used
Product Changeover
Dial in the new end-stop position on the fly when switching a packaging line to a different carton size, utilizing the full 55 to 155 mm travel window.
Commissioning Calibration
Fine-tune the extend position during machine setup without replacing the cylinder or fabricating external spacer blocks.
Variable End Stops
Provide adjustable physical stops for testing rigs where the effective stroke length must be altered between test cycles.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-100 the Right Cylinder?
The generous 100 mm adjustment range is ideal for machines processing varying product sizes, allowing you to fine-tune the extend position at commissioning without machining new hard stops. Because the nominal stroke is 155 mm, side-load risks are moderate, but ensure the load is guided externally for optimal bearing life.
To match this exact ISO 15552 interchangeable cylinder, specify: 40 mm bore, 155 mm stroke, 100 mm adjustment, PT port thread, SUS420J2 rod material, no magnet, and standard mounting options (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that SAIJ omits the FB, CA, CB, and CR mounts found on some standard lines.
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 SAIJ40 Adjustable Cylinder SAIJ40AX155-100 FAQ
At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 100 mm from the nominal 155 mm, giving an adjustable travel window of 55 to 155 mm. The adjuster functions only as a mechanical stop to set the end position; it does not lock or hold the load pneumatically.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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