Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-75
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX425-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 425mm 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
- Stroke425 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 SAIJ80BX425-75
The AirTAC SAIJ80X425-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits fine-tuning the retract end position. With a 425 mm nominal stroke and a 75 mm adjustment range, it yields a usable travel window of 350-425 mm. The extruded aluminum barrel includes sensor grooves on both sides, and the 25 mm SUS304 stainless steel rod offers high corrosion resistance for demanding environments.
This model features PT tapered port threads (G3/8) and reaches operating speeds of 30-800 mm/s. The rear adjustment screw functions strictly as a travel stop to dial in end positions during commissioning or product changeover, avoiding the need to physically swap the cylinder. It is important to note that this adjuster and the integrated air cushions do not lock the load; a SAIL or BSAI variant is required for true load-holding without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 425 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 SAIJ80BX425-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×425 | 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 SAIJ80BX425-75 Is Used
Variable Product Sorting
Adjust the retract stop from 350 to 425 mm on the fly to handle different package dimensions on a sorting line without changing cylinder hardware.
Machine Setup Tuning
Fine-tune the end-of-stroke position during initial commissioning to precisely meet tooling tolerances, eliminating the need for machined spacer plates.
Changeover Automation
Rapidly reconfigure the effective stroke during production line changeovers by dialing back the travel to accommodate shorter workpieces.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-75 the Right Cylinder?
The adjustable 350-425 mm travel window is ideal for machines processing variable product sizes, allowing operators to set precise end-stops on the fly without installing external physical stops. Because the 425 mm stroke is relatively long, an external guide rail is recommended to prevent excessive side-loading on the 25 mm rod and M20x1.5 rod thread. For a direct ISO 15552 replacement, match the 80 mm bore, 425 mm stroke, 75 mm adjustment, PT G3/8 ports, Basic/LB/TC mounting, and omit the magnet (-S) since sensors are not specified.
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 SAIJ80BX425-75 FAQ
It can deliver a maximum of 513 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that can shorten the 425 mm nominal stroke by up to 75 mm, providing an effective travel window of 350-425 mm. It decelerates the travel end but does not hold the load without live air pressure.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
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