Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-30
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX155-30 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 SAIJ40AX155-30
The AirTAC SAIJ40X155-30 is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 125-155 mm usable travel window, allowing you to dial back the nominal 155 mm stroke by up to 30 mm during commissioning.
This unit uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered ports. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB and rear pivot options.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-30 |
|---|---|
| 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 SAIJ40AX155-30
| 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 SAIJ40AX155-30 Is Used
Machine Changeover
Quickly fine-tune the end-of-stroke position from 125 to 155 mm when switching production lines to accommodate different product sizes.
Assembly Positioning
Dial in the exact extend position during initial setup without machining custom external stopper blocks or shimming the rear cover.
Diverter Adjustment
Set variable retract stops for a pneumatic diverter arm to handle varying package widths on a single conveyor line.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX155-30 the Right Cylinder?
The adjustable stroke is ideal for product changeovers, letting you set a precise variable end-stop without swapping the cylinder or adding external stops. The rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series. To match this ISO 15552 replacement, specify: 40 mm bore, 155 mm stroke, 30 mm adjustment, PT ports, and your required mounting.
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 SAIJ40AX155-30 FAQ
A rear adjusting screw lets you shorten the effective travel from the 155 mm nominal stroke down to 125 mm. This creates a 125-155 mm adjustable window for fine-tuning the end position at commissioning without replacing the cylinder.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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