Airtac SAIJ80 Adjustable Cylinder SAIJ80BX135-30
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX135-30 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 SAIJ80BX135-30
The AirTAC SAIJ80X135-30 is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The built-in adjuster allows you to fine-tune the effective travel down from the 135mm nominal stroke to a minimum of 105mm, providing a 30mm setup window for dialing in exact end positions during commissioning.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and ships with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. Remember that the rear adjuster functions strictly as a travel stop to set deceleration endpoints, not as a locking device, so live air pressure is required to hold a load.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX135-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX135-30 |
|---|---|
| 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 SAIJ80BX135-30
| 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 SAIJ80BX135-30 Is Used
Machine Changeovers
Quickly dial in the 105-135mm travel window during product size transitions without disassembling the actuator or bolting on external stops.
End-Position Tuning
Perfect the final retract position during initial commissioning using the rear screw, absorbing mechanical tolerances in the fixture design.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX135-30 the Right Cylinder?
The 30mm adjustable stroke is ideal for product-size changeovers on a line, allowing you to reposition the end stop without physically swapping the cylinder or adding external spacers. For a fixed-stroke equivalent without the adjustment screw, the standard SAI series is available.
When replacing an ISO 15552 cylinder, verify the 80mm bore, 135mm stroke, PT G3/8 port, and the required mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that FB, CA, CB, and CR mounts are omitted from this adjustable series. Because the 25mm rod and M20x1.5 thread handle side loads well, this cylinder performs reliably in dynamic setups, though any stroke over 300mm would require an external guide.
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 SAIJ80BX135-30 FAQ
The rear adjuster acts as an external stopper that lets you shorten the effective stroke by up to 30mm. This creates a usable travel window between 105mm and 135mm, allowing you to set the exact retract end-position without replacing the cylinder.
No. The rear adjuster is a travel stop, not a locking mechanism, and the air cushions only manage deceleration. To hold a load securely without live air pressure, you would need an external rod lock or a related AirTAC locking cylinder like the SAIL or BSAI series.
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