Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-75S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke210 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-75S
The AirTAC SAIJ80X210-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N push force at 0.5 MPa and features a standard carbon steel piston rod with a PT tapered port thread. Because this configuration includes a -S magnet, it directly supports AirTAC CMSE reed and DMSE electronic solid-state sensors housed within the dual-side extruded barrel grooves.
With a 210mm nominal stroke and a 75mm adjustment range, this specific SKU provides a wide 135-210mm usable travel window. This allows you to dial back the retract end-position by up to 75mm during commissioning or product changeovers without swapping the cylinder or adding external stops. The rear screw acts purely as a travel stop for deceleration alongside the standard air cushions; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-75S |
|---|---|
| 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-75S
| 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 SAIJ80X210-75S Is Used
Product Size Changeovers
Leverage the 135-210mm travel window to quickly adapt machinery retract distances for different product lengths without physically replacing the cylinder.
Commissioning End-Stop Tuning
Fine-tune the exact retract position during initial machine setup using the rear screw, avoiding the need to bolt on custom external spacers or stops.
Variable Stroke Diverting
Adjust the stroke on a pneumatic diverter arm to accommodate varying package widths on a conveyor line, ensuring precise routing without hardware changes.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-75S the Right Cylinder?
Select this 80mm bore when an application requires higher thrust than a 63mm bore (which provides 1559N push at 0.5 MPa) but does not need the full 3927N push of a 100mm bore. The 75mm adjustment window is particularly valuable for packaging lines or machinery that frequently process varying product sizes, allowing the end-stop to be fine-tuned on the fly instead of changing out a fixed-stroke SAI cylinder. When replacing an ISO 15552 cylinder, match the 80mm bore, 210mm stroke, G3/8 port, PT thread, and -S magnet.
Because the total travel reaches 210mm, the 25mm rod diameter and M20x1.5 rod thread provide excellent structural rigidity, but an external guide should still be used to prevent excessive side-loading on the piston. For load-holding requirements without continuous live air, this standard SAIJ adjuster is not a lock—you would need to step up to an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally 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 SAIJ80X210-75S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 75mm from the 210mm nominal length, creating a usable travel window of 135-210mm. The adjuster acts as a mechanical stop to set the end position and does not lock the load without live air pressure.
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