Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX125-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 125mm 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
- Stroke125 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 SAIJ80BX125-40S
The AirTAC SAIJ80X125-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from a 125 mm nominal stroke to a minimum of 85 mm, creating a 40 mm setup window.
This variant includes a SUS304 stainless steel piston rod for superior corrosion resistance and is equipped with a magnet for use with CMSE reed and DMSE electronic sensors. It features PT tapered ports and uses the standard SAIJ mounting set, which includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments, omitting the FB, CA, CB, and CR options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80BX125-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SAIJ80BX125-40S Is Used
Product Changeover
Quickly dial the stroke back from 125 mm to 85 mm when switching to a smaller package size on a packaging line, eliminating the need to physically swap cylinders.
Machine Setup
Fine-tune the retract end position during initial commissioning to perfectly align a heavy press tool without machining external stopper blocks.
Variable End Stops
Handle multiple material thicknesses on a single conveyor line by adjusting the effective stroke window on the fly to accommodate different pusher depths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-40S the Right Cylinder?
The adjustable rear stopper is ideal for product changeovers, letting you dial in the exact end-of-stroke without swapping hardware or adding external stops. Note that the rear adjuster and air cushions only decelerate the load; they do not hold position without live air pressure. For load-holding requirements, consider an external pilot-operated check valve or the related SAIL or BSAI series. To match this ISO 15552 footprint, specify the 80 mm bore, 125 mm stroke, 40 mm adjustment, PT port thread, and the -S magnet option.
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 SAIJ80BX125-40S FAQ
At 0.7 MPa, the push force increases to 3518 N.
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke from its 125 mm nominal length down to 85 mm. It allows precise end-position tuning at commissioning without swapping the cylinder, though it does not lock the load without live air pressure.
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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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