Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX280-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 280mm 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
- Stroke280 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 SAIJ80BX280-40S
The AirTAC SAIJ80X280-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. By turning the rear stopper screw, you unlock a usable travel window of 240 to 280 mm, allowing precise end-position tuning without swapping out the physical cylinder.
This adjustable-stroke model integrates seamlessly with existing setups using PT tapered G3/8 ports and a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). The integrated magnet (-S) supports position sensing via AirTAC CMSE reed or DMSE electronic solid-state switches housed in the dual-side sensor grooves. Since the barrel is an extruded aluminum profile, it provides a rigid, lightweight structure distinct from traditional tie-rod designs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 280 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 SAIJ80BX280-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×280 | 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 SAIJ80BX280-40S Is Used
Product Size Changeovers
Dial in the 240 to 280 mm stroke window on the fly to accommodate different package lengths on a packaging line without changing cylinders.
Machine Setup Fine-Tuning
Use the rear stopper screw to precisely set the retraction end position during commissioning, ensuring perfect alignment of tooling.
Variable End-Stop Actuation
Ideal for assembly stations where the effective retraction distance needs occasional adjustment to handle multiple part variants.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-40S the Right Cylinder?
The 40 mm adjustment range is perfect for machine setups requiring variable end stops during product changeovers, eliminating the need to bolt on external stops or buy multiple fixed-stroke SAI cylinders. For exact ISO 15552 replacement matching, verify the 280 mm stroke, 40 mm adjuster, PT G3/8 port, and the -S magnet requirement.
Because the 280 mm stroke is substantial, the 25 mm rod and M20x1.5 thread provide robust support, but an external guide is still recommended to prevent excessive side-loading on long unsupported travels. Remember that the rear adjuster acts purely as a travel stop and the air cushions handle deceleration; neither will hold a load without live air pressure. For load-holding requirements, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
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 SAIJ80BX280-40S FAQ
If operated at 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the nominal 280 mm stroke by up to 40 mm. This creates a usable travel window of 240 to 280 mm, which can be fine-tuned during commissioning without replacing the cylinder.
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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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