Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-10
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX155-10 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 SAIJ40AX155-10
The AirTAC SAIJ40X155-10 is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 145-155 mm usable travel window, allowing you to trim the nominal 155 mm stroke by up to 10 mm during machine setup.
This variant features a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance compared to standard carbon steel. The rear adjusting screw acts purely as a mechanical stop to fine-tune the retract position; it does not lock the load without live air pressure. Pneumatic routing uses a PT tapered G1/4 port.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-10 |
|---|---|
| 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 SAIJ40AX155-10
| 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 SAIJ40AX155-10 Is Used
Changeover Calibration
Dial in the exact 145-155 mm retract position during product size changeovers without replacing the cylinder or adding spacer shims.
End-Stop Truing
Fine-tune the final resting position of a tooling head at machine commissioning to compensate for mechanical tolerance stack-up.
Variable Diverting
Adjust the stroke length on a diverter arm to handle different package widths on the fly, ensuring precise routing.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-10 the Right Cylinder?
The adjustable stroke is selected over a fixed SAI cylinder when you need variable end-stops for product changeovers, eliminating the need to swap physical cylinders or bolt on external stops. Because the rear adjuster is a stop and not a lock, load-holding without live air requires a SAIL pneumatic lock or an external rod lock.
For a true ISO 15552 replacement, match the 40 mm bore, 155 mm stroke, 10 mm adjustment range, PT G1/4 port, and SUS420J2 rod material. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles. Since the 155 mm stroke is under 300 mm, side-load stress is minimal, but external guides are still recommended for heavy lateral loads.
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 SAIJ40AX155-10 FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 128 kgf.
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke from 155 mm down to 145 mm. It allows precise end-position tuning at commissioning but does not hold the load dynamically without live air pressure.
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