Airtac SAIJ80 Adjustable Cylinder SAIJ80BX210-75S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX210-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 210mm 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
- Stroke210 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 SAIJ80BX210-75S
The AirTAC SAIJ80X210-75-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the rear stopper screw, you achieve a usable travel window of 135 to 210 mm, enabling precise end-position tuning during commissioning without adding external stops.
This variant includes a SUS304 stainless steel piston rod for superior corrosion resistance and uses PT tapered port threads. It carries an integrated magnet compatible with AirTAC CMSE reed and DMSE solid-state sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX210-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX210-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 210 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 SAIJ80BX210-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×210 | 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 SAIJ80BX210-75S Is Used
Product Changeover
Dial the stroke back by up to 75mm instantly on the production line to accommodate different package lengths without changing the cylinder.
End-Stop Tuning
Fine-tune the retract position during machine commissioning to perfectly align heavy 2513N press or clamping loads.
Variable Diverter
Adjust the actuation point on a conveyor sorting gate to handle varying product dimensions on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX210-75S the Right Cylinder?
Select this 80mm bore actuator when a 50mm bore falls short on thrust (offering 982N at 0.5 MPa) and a 100mm bore is excessive. The 75mm adjustment range is ideal for machinery requiring frequent product-size changeovers, allowing the retract end-position to be dialed in on the fly rather than machining custom spacers or swapping to a fixed-stroke SAI cylinder. Remember that the rear adjuster acts strictly as a travel stop and provides no load-holding capability without live air; for fail-safe holding, consider an external pilot-operated check valve or the SAIL lock series.
When replacing an ISO 15552 cylinder, match the 80mm bore, 210mm nominal stroke, 75mm adjustment, PT port thread, and the -S magnet requirement. For this 210mm stroke, the 25mm rod diameter and M20x1.5 thread handle moderate side loads, but any long unsupported over-travel setup should still use an external guide rail to prevent rod binding.
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 SAIJ80BX210-75S FAQ
The rear adjuster screw acts as a mechanical stop that shortens the effective travel. With a 210mm nominal stroke and a 75mm adjustment code, you can set the actual working stroke anywhere within a 135 to 210mm window.
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