Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX135-50 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 SAIJ80AX135-50
The AirTAC SAIJ80X135-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 135 mm travel back by up to 50 mm. This creates a highly flexible 85-135 mm usable travel window, letting you dial in the exact end position at commissioning without swapping out the barrel or adding external stops.
This SKU is configured with an SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and surface hardness compared to standard carbon steel. The barrel is an extruded aluminum profile with sensor grooves on both sides, and the fluid ports are PT tapered G3/8. It uses adjustable air cushions at both ends to decelerate the load, but note that neither the cushions nor the rear stopper act as a lock; the cylinder cannot hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-50 |
|---|---|
| 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 SAIJ80AX135-50
| 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 SAIJ80AX135-50 Is Used
Machine Changeover
Dial in the 85-135 mm travel window during product size transitions on packaging lines, setting precise retract positions without changing hardware.
End-Position Tuning
Fine-tune the final end-of-stroke location during machine commissioning to absorb mechanical tolerances and achieve exact positioning.
Variable Stop Assembly
Use the rear adjuster screw as a built-in mechanical stop to set differing retraction depths for multi-format assembly stations.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX135-50 the Right Cylinder?
The 50 mm adjustment range is particularly valuable on machines processing varying product sizes, as operators can quickly change the retract end-stop during line changeovers rather than physically replacing the cylinder. For load-holding without continuous air pressure, this standard SAIJ configuration is not suitable; you should instead look at the SAIL (air-released lock) or BSAI (clamp-lock) variants. When replacing an ISO 15552 cylinder, match the 80 mm bore, 135 mm stroke, 50 mm adjustment, PT G3/8 ports, and your required mounting style from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ80AX135-50 FAQ
A rear adjusting screw acts as a mechanical stopper that shortens the effective stroke by up to 50 mm. For this 135 mm stroke model, it provides a usable travel window of 85-135 mm, allowing you to set the exact retract position without adding external stops.
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