Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-20
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX275-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 275mm 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
- Stroke275 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 SAIJ80BX275-20
The AirTAC SAIJ80X275-20 is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The extruded aluminum barrel includes sensor grooves on both sides, and this specific configuration features a SUS304 stainless steel rod with PT tapered ports.
Because the rear screw acts strictly as a mechanical stop to set deceleration limits, it cannot hold a load without live air pressure. For load-holding requirements without continuous air, an external rod lock or related AirTAC types like SAIL or BSAI are required. This model supports standard speeds of 30-800mm/s and uses a subset of ISO 15552 mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 275 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 SAIJ80BX275-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×275 | 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 SAIJ80BX275-20 Is Used
Product Changeovers
Dial in the 255-275mm retract position rapidly during format size changes without physically swapping out the entire actuator.
End-Stop Tuning
Fine-tune the mechanical end position at commissioning to perfect tooling alignment using the built-in rear stopper screw.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-20 the Right Cylinder?
The adjustable stroke is ideal for product changeovers on a line, allowing operators to dial in the exact 255-275mm end-stop without swapping hardware or adding external stops. For fixed-position tasks without variation, a standard SAI cylinder is sufficient.
When replacing an ISO 15552 cylinder, match the 80mm bore, 275mm nominal stroke, 20mm adjustment, PT port thread, and the chosen mounting bracket. Since this unit lacks a magnet (-S), it cannot host CMSE or DMSE sensors. Furthermore, with a 275mm stroke, ensure external guiding is used to prevent excessive side-loading on the SUS304 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 SAIJ80BX275-20 FAQ
At 0.7 MPa, the push force increases to 3518N.
The rear adjuster acts as a mechanical stop that shortens the nominal 275mm stroke by up to 20mm, creating a 255-275mm usable travel window. It sets the end position but does not lock the load without live air.
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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.
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Most inquiries answered within 7-8 hours.
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