Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-75S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX375-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 375mm 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
- Stroke375 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 SAIJ80BX375-75S
The AirTAC SAIJ80X375-75-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N pull force at 0.5 MPa and features an extruded aluminum barrel with sensor grooves on both sides. By turning the rear adjustment screw, you can trim the effective travel back by up to 75 mm, creating a precise 300-375 mm usable stroke window for exact positioning without adding external stops.
This variant includes a SUS304 stainless steel rod for superior corrosion resistance and a magnet for position sensing. It uses PT tapered ports and supports AirTAC CMSE reed and DMSE electronic sensors. The rear adjuster functions strictly as a travel stop to set end positions and deceleration; it does not lock or hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 375 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 SAIJ80BX375-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×375 | 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 SAIJ80BX375-75S Is Used
Product Changeover
Dial in the 300-375 mm travel window during format changes on packaging lines, avoiding the need to physically swap cylinders for different carton sizes.
Machine Setup
Fine-tune the retract end-position at commissioning to dial in exact mechanical stops, removing the trial-and-error of shimming a fixed-stroke cylinder.
Variable End-Stops
Establish precise, repeatable retract limits for automated assembly presses without machining and bolting on external hard stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-75S the Right Cylinder?
Choose this 80 mm bore cylinder when your application requires substantial thrust (2513N pull at 0.5 MPa) and on-the-fly travel tuning. If you need less force, stepping down to a 63 mm bore yields 1402N pull, whereas a 100 mm bore provides 3681N pull for heavier loads. The adjustable stroke is ideal for machine setups requiring product-size changeovers, serving as a variable end-stop that eliminates the need to physically swap out a fixed-stroke SAI cylinder during commissioning.
Because the nominal stroke is 375 mm, the 25 mm rod should be adequately guided to prevent excessive side-loading and premature seal wear. For any load-holding requirements without continuous air pressure, this cylinder's adjuster will not suffice; instead, consider an external pilot-operated check valve or related AirTAC locking types like SAIL or BSAI. This model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) while 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 SAIJ80BX375-75S FAQ
The rear adjuster screw lets you shorten the 375 mm nominal stroke by up to 75 mm, providing a usable travel window of 300 to 375 mm. This allows you to fine-tune the retract end-position at commissioning without changing the cylinder or adding external stops.
At 0.5 MPa, this 80 mm bore cylinder provides 2513N of pull force and 3518N at 0.7 MPa. The rear adjuster acts only as a travel stop and does not hold the load without live air; for load-holding, use an external rod lock or consider AirTAC SAIL or BSAI cylinders.
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