Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-30S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX270-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 270mm 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
- Stroke270 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 SAIJ80BX270-30S
The AirTAC SAIJ80X270-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 240-270 mm, letting you shorten the nominal 270 mm stroke by up to 30 mm during commissioning without adding external stops.
This variant uses a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel has sensor grooves on both sides. The rear adjuster acts purely as a travel stop to set end positions and relies on the variable air cushions for deceleration, meaning it will not hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 270 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 SAIJ80BX270-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×270 | 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 SAIJ80BX270-30S Is Used
Machine Changeover
Dial in the exact 240-270 mm end-stop during product size changes without physically swapping cylinders or repositioning hard stops.
Variable Position Diverter
Fine-tune the retract distance of a diverter arm on a packaging line to handle different carton widths on the fly.
End-Position Tuning
Trim the stroke by up to 30 mm at commissioning to perfectly align tooling, absorbing minor mechanical setup variations.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-30S the Right Cylinder?
The adjustable 240-270 mm travel is perfect for product changeovers, allowing you to fine-tune the retract end-position on the fly instead of swapping a fixed-stroke SAI cylinder. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
With a 270 mm stroke, the 25 mm rod and M20x1.5 thread provide rigidity, but an external guide is recommended for unsupported loads to prevent side-loading damage. If your application requires true load-holding without live air, use a SAIL pneumatic lock or BSAI clamp-lock cylinder instead of relying on the adjuster. This PT-port model is dimensionally interchangeable per ISO 15552.
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 SAIJ80BX270-30S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 270 mm down to 240 mm. It sets the travel end and relies on the air cushion for deceleration, but it is not a lock and will not hold the load without live air pressure.
It operates at speeds between 30 and 800 mm/s.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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