Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-75S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX270-75S 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 SAIJ80BX270-75S
The AirTAC SAIJ80X270-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits a usable travel window of 195 to 270 mm. The barrel is extruded aluminum with sensor grooves on both sides, and this -S variant includes a magnet for direct switching with AirTAC CMSE reed or DMSE electronic sensors.
Built with a SUS304 stainless steel rod and PT tapered ports, this unit is dimensionally interchangeable per ISO 15552. It uses the standard SAIJ mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets. The rear adjuster acts purely as a mechanical stop to set the retraction end position and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-75S |
|---|---|
| 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 SAIJ80BX270-75S
| 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 SAIJ80BX270-75S Is Used
Machine Setup & Changeover
Dial in the exact retraction end-stop during line changeovers without replacing the cylinder or adding external mechanical stops.
Variable Product Stops
Adjust the travel window from 195 to 270 mm on the fly to accommodate different package sizes moving down a handling line.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-75S the Right Cylinder?
If your process needs less force, stepping down to a 63 mm bore yields 2182 N at 0.5 MPa push, while moving up to a 100 mm bore provides 5497 N. The adjustable stroke is ideal when exact end-of-travel distances fluctuate, saving the need to swap out a fixed-stroke SAI cylinder or bolt on external stops.
Because the 270 mm stroke creates an unsupported length, the 25 mm rod and M20x1.5 thread will carry side loads better than smaller bores, but an external guide is still recommended for rigid lateral stability. For load-holding without continuous air pressure, this cylinder cannot function as a brake; instead, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock, or an external rod lock. To match this ISO 15552 replacement: 80 mm bore, 270 mm stroke, 75 mm adjust, PT ports, SUS304 rod, -S magnet, and standard SAIJ mountings.
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 SAIJ80BX270-75S FAQ
At 0.7 MPa the push force is 3518 N, and at 0.9 MPa it reaches 4523 N.
The rear adjuster screw lets you mechanically shorten the effective travel by up to 75 mm, creating a usable stroke window of 195 to 270 mm. It functions as a travel stop and does not lock or hold the load without live air pressure.
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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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