Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-50S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke135 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-50S
The AirTAC SAIJ80X135-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, letting you dial back the 135 mm nominal travel by up to 50 mm to achieve an exact 85-135 mm end-position window. It delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it well-suited for medium-to-heavy industrial handling. The extruded aluminum barrel features sensor grooves on both sides, and this -S variant includes a magnet for direct switching with CMSE reed or DMSE electronic sensors.
This unit uses a 25 mm carbon steel piston rod with an M20x1.5 thread, providing high rigidity and excellent side-load resistance for a 135 mm stroke. The rear adjuster acts purely as a mechanical stop to set the retract distance during commissioning or product changeover. It does not lock the load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-50S |
|---|---|
| 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-50S
| 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 SAIJ80X135-50S Is Used
Variable Product Changeover
Quickly reposition the retract stop for different package lengths on a packaging line without swapping out the entire cylinder assembly.
End-Position Calibration
Fine-tune the 85-135 mm travel window during machine commissioning to perfect the seating force of pressing or clamping operations.
Sensor-Ready Automation
Leverage the integrated magnet and dual sensor grooves to deploy CMSE or DMSE switches for precise stroke confirmation in automated cells.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-50S the Right Cylinder?
Choose this 80 mm bore when your application requires around 2513 N of thrust at 0.5 MPa, stepping up from a 63 mm bore that provides 1559 N. The 50 mm adjustment range is ideal for machines processing variable product sizes, allowing you to fine-tune the retract stroke on the fly without adding external stopper blocks. If you need fixed travel without an adjuster, the standard SAI series is the simpler alternative.
For a direct ISO 15552 replacement, match the 80 mm bore, 135 mm stroke, 50 mm adjustment code, PT tapered ports, and the -S magnet option. Mounting options include the Basic, FA, LB, TC, FTC, TCM1, and TCM2 sets, deliberately omitting FB, CA, CB, and CR. Because the 135 mm stroke is under 300 mm, side-load risks are moderate, but an external guide is 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 SAIJ80 Adjustable Cylinder SAIJ80X135-50S FAQ
At a standard 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At its maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear mechanical adjuster allows you to shorten the effective 135 mm stroke by up to 50 mm, creating a usable travel window of 85-135 mm. It functions as a physical stop for end-position tuning and requires live air pressure to move the load; it is not a locking device.
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