Airtac SAIJ80 Adjustable Cylinder SAIJ80BX25-20
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX25-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 25mm 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
- Stroke25 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 SAIJ80BX25-20
It features a SUS304 stainless steel rod and PT tapered ports. By turning the rear screw, you can trim the effective stroke back by up to 20 mm, creating a precise 5-25 mm usable travel window for short-stroke tasks.
This adjustable stopper lets you fine-tune the end position at commissioning without swapping the cylinder or adding external stops. The rear adjuster acts purely as a travel stop and works alongside the standard air cushions to decelerate the load; it does not hold the load without live air. For position holding, a SAIL or BSAI variant is required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX25-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX25-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 25 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 SAIJ80BX25-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×25 | 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 SAIJ80BX25-20 Is Used
Precision Short-Stroke Pressing
Dial in the exact 5-25 mm contact distance for light pressing or seating operations, ensuring perfect force delivery without repositioning the entire fixture.
Machine Changeover Setup
Quickly adjust the retract end-stop by up to 20 mm when switching between product sizes on a line, minimizing downtime and avoiding external stop hardware.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX25-20 the Right Cylinder?
The 5-25 mm adjustable travel window is ideal for setups requiring exact short-stroke end-position tuning during product changeovers, avoiding the rigid fixed length of a standard SAI cylinder.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 25 mm nominal stroke, 20 mm adjustment range, PT port threads, and your preferred mounting from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that FB, CA, CB, and CR mounts are omitted from this series. Because the 25 mm stroke is short, side-load stress is minimal, but the robust 25 mm rod still handles standard guide 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 SAIJ80BX25-20 FAQ
It operates efficiently at speeds between 30 and 800 mm/s.
The rear adjuster screw allows you to shorten the 25 mm nominal stroke by up to 20 mm, creating a usable travel window of 5 to 25 mm. This stopper fine-tunes the end position but does not lock the load without continuous 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.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80BX25-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.