Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-20
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX135-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 135mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke135 mm
- Port sizeG3/8
- 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 SAIJ80 Adjustable Cylinder SAIJ80AX135-20
The AirTAC SAIJ80X135-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 115-135 mm, allowing you to dial back the 135 mm nominal stroke by up to 20 mm during commissioning. The piston rod is constructed from SUS420J2 stainless steel (code A) for enhanced durability against moisture and mild corrosion.
Unlike fixed-stroke actuators, this model lets you fine-tune the retract end position without swapping the cylinder or adding external stops. The adjuster acts purely as a mechanical stop to set the travel endpoint, working alongside the variable air cushions at both ends. It uses a PT G3/8 port and operates at speeds of 30-800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 135 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 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 SAIJ80 Adjustable Cylinder SAIJ80AX135-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×135 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX135-20 Is Used
Variable End-Stop Setup
Dial in the exact retract position within the 115-135 mm window during machine commissioning to avoid adding external mechanical stops.
Product Changeover
Quickly adjust the stroke end-point on packaging lines when handling different product sizes, reducing downtime between runs.
Fine-Tune Positioning
Use the 20 mm rear adjustment screw to perfectly time the end-of-stroke deceleration alongside the standard air cushions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-20 the Right Cylinder?
The adjustable stroke is highly beneficial for product changeovers on a line, enabling variable end-stops without mechanical rebuilds.
For ISO 15552 replacement matching, verify the 80 mm bore, 135 mm stroke, 20 mm adjustment, PT G3/8 port, and the required mounting set. SAIJ supports a reduced set of mounting options: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Remember that the rear adjuster and air cushions only decelerate the load; they do not hold it without live air. For true load-holding without pressure, consider the SAIL or BSAI series, or use 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 SAIJ80 Adjustable Cylinder SAIJ80AX135-20 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 135 mm nominal stroke down to 115 mm. It sets the end position but does not lock the load without live air pressure.
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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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