Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX135-50S 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 SAIJ80AX135-50S
The AirTAC SAIJ80X135-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 50 mm. This creates a usable stroke window of 85 to 135 mm, letting you dial in the exact end position at commissioning without adding external stops.
This specific configuration includes a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) is fully compatible with AirTAC CMSE reed and DMSE solid-state switches for precise position feedback. The rear adjuster acts purely as a travel stop to set the retract end position; it does not lock or hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-50S |
|---|---|
| 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 SAIJ80AX135-50S
| 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 SAIJ80AX135-50S Is Used
Machine Changeover
Dial in the retract position from 85 to 135 mm during product format changes without swapping hardware.
End-Stop Tuning
Fine-tune the final resting position of a press or clamping assembly at commissioning to hit exact tolerances.
Variable Positioning
Adjust the travel end on an assembly line fixture to accommodate different part sizes on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-50S the Right Cylinder?
Choose this 80 mm bore adjustable cylinder when your machine setup requires variable end-stops or frequent product-size changeovers, offering a simpler alternative to swapping out a fixed-stroke SAI cylinder. If your application requires less force, stepping down to a 63 mm bore yields 1402 N of pull force at 0.5 MPa, while stepping up to a 100 mm bore provides 3681 N of pull force for heavier loads. Because the nominal stroke is 135 mm, you benefit from the fine-tuning window, but you must ensure the load is guided externally if side loads are a concern, as the adjuster and air cushions only decelerate the travel end and cannot hold the load statically without air pressure. For true fail-safe load holding, consider the SAIL or BSAI series instead. This ISO 15552 dimensionally interchangeable cylinder uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80AX135-50S FAQ
At the maximum operating pressure of 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 135 mm stroke by up to 50 mm, giving an effective travel window of 85 to 135 mm. It sets the deceleration and end position but does not lock the load without live air pressure.
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