Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-30
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX270-30 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 SAIJ80BX270-30
The AirTAC SAIJ80X270-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. Equipped with a SUS304 stainless steel rod, it handles demanding environments while maintaining standard ISO 15552 mounting dimensions.
The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position and is paired with variable air cushions at both ends for smooth deceleration. Because it is a stop rather than a locking mechanism, it will not hold a load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is specified later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-30 |
|---|---|
| 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 SAIJ80BX270-30
| 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 SAIJ80BX270-30 Is Used
Machine Changeover
Dial in the 240-270mm travel window during product size changes to set precise retract positions without replacing hardware.
End-Position Tuning
Fine-tune the final retract stop during commissioning to perfect tooling alignment, avoiding the hassle of external stopper blocks.
Variable End Stops
Adjust the stroke dynamically on packaging conveyors to accommodate different carton sizes on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-30 the Right Cylinder?
The adjustable 240-270mm travel window is perfect for machine setups requiring variable end-stops or product-size changeovers, eliminating the need to swap cylinders or bolt on external stops. For applications needing true load-holding without continuous air pressure, consider the SAIL or BSAI series instead.
When replacing an ISO 15552 cylinder, match the 80mm bore, 270mm nominal stroke, 30mm adjustment range, PT tapered port threads, and mounting style. Supported SAIJ mounts include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the 270mm stroke is moderately long, ensure adequate external guiding to prevent excessive side-loading on the 25mm rod.
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 SAIJ80BX270-30 FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 30mm, creating a 240-270mm usable travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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