Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX85-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 85mm 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
- Stroke85 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 SAIJ80BX85-40
The AirTAC SAIJ80X85-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 45 to 85 mm, allowing you to dial in the exact retract distance during commissioning without swapping hardware.
This model uses PT tapered port threads (G3/8) and includes variable air cushions at both ends to manage kinetic energy. The rear adjustment screw acts purely as a mechanical stop for end-position tuning, meaning it will not hold a load safely without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 85 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 SAIJ80BX85-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×85 | 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 SAIJ80BX85-40 Is Used
Product Changeovers
Quickly reconfigure the 45-85 mm retract distance on packaging lines when switching to different container sizes without changing the cylinder.
End-Stop Calibration
Fine-tune the final resting position of a tooling head during machine setup to avoid crushing delicate components.
Variable Positioning
Provide a mechanical adjustment point on automated assembly stations where multiple parts require slightly different retraction depths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-40 the Right Cylinder?
Conversely, if you need higher capacity, a 100 mm bore provides 3927 N. The adjustable 45-85 mm window is ideal for product changeovers, whereas a fixed-stroke SAI cylinder is better for rigid, unvarying stops.
Because this is an 85 mm stroke unit, side-load risks are minimal, but always ensure the load is guided to prevent rod binding. For load-holding without air pressure, this cylinder is insufficient; you should explore an AirTAC SAIL or BSAI locking cylinder instead. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
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 SAIJ80BX85-40 FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 85 mm stroke by up to 40 mm, creating a usable travel window of 45 to 85 mm. It only sets the end position and does not lock the load without live air.
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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