Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX155-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 155mm 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
- Stroke155 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 SAIJ80BX155-40
It features a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered G3/8 port. By turning the external rear screw, you can shorten the effective travel, creating a precise 115-155mm usable stroke window from the 155mm nominal length without adding external stops.
This adjustable mechanism is a physical stop that fine-tunes the retract end position during commissioning or product changeover. It is not a locking device, so the cylinder cannot hold a load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides, and the robust 25mm rod thread handles high side loads while maintaining a 30-800mm/s speed range.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 155 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 SAIJ80BX155-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×155 | 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 SAIJ80BX155-40 Is Used
Machine Changeover
Dial in the retract position within the 115-155mm window during product size changeovers without swapping physical hardware.
End-Stop Tuning
Fine-tune the final end position during machine commissioning to perfect part seating and alignment.
Variable Positioning
Adjust the travel limit on automated lines to accommodate different material thicknesses or package sizes.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-40 the Right Cylinder?
If you need less force, stepping down to a 50mm bore yields 1374N at 0.7MPa, while moving up to a 100mm bore provides 5497N. The SAIJ80X155-40 is selected over a fixed-stroke SAI cylinder when you need to dial in the exact end position on the fly.
For dimensionally interchangeable ISO 15552 replacement, verify the 80mm bore, 155mm stroke, 40mm adjustment range, PT G3/8 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting. Since this is a non-locking cylinder, use a SAIL or BSAI model if the machine requires load-holding without continuous air pressure. Because the stroke is under 300mm, external guide rails are less critical, though the 25mm rod still manages moderate side loads effectively.
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 SAIJ80BX155-40 FAQ
At the maximum operating pressure of 1.0 MPa, it delivers 513 kgf.
The rear adjuster acts as a mechanical stop that lets you trim the 155mm nominal stroke back by up to 40mm, creating a usable travel window of 115-155mm. It requires live air to move and does not lock the load.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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