Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 65mm 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
- Stroke65 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-40S
The AirTAC SAIJ80X65-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 25-65 mm usable travel window. Delivering 2513 N of push force at 0.5 MPa, it handles robust actuation while allowing you to dial in the exact retract end-position during commissioning. This model includes a SUS304 stainless steel rod for superior corrosion resistance and a magnet for position sensing.
It uses PT tapered ports sized at G3/8 and operates at speeds of 30-800 mm/s. The extruded aluminum barrel incorporates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 65 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 SAIJ80BX65-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×65 | 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 SAIJ80BX65-40S Is Used
Product Changeover
Dial in the 25-65 mm travel window during format changeovers on packaging lines, using the rear stopper to set precise retract distances without external shims.
End-Position Tuning
Fine-tune the final retract position during machine commissioning to perfect seating forces, leveraging the 2513 N thrust safely.
Corrosive Assembly
Utilize the SUS304 stainless steel rod in light chemical or washdown assembly stations where standard carbon steel rods would degrade.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-40S the Right Cylinder?
Choose this 80 mm bore when you need higher thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but want to avoid the bulk of a 100 mm unit. The adjustable stroke is perfect for machine setups requiring variable end-stops or product-size changeovers without swapping hardware. For a direct ISO 15552 replacement, match the 80 mm bore, 65 mm nominal stroke, 40 mm adjustment range, PT G3/8 ports, and the -S magnet.
Because the nominal stroke is only 65 mm, side-loading is less of a concern than with longer strokes, but the 25 mm rod and M20x1.5 thread still handle robust loads. Remember that the rear adjuster acts only as a travel stop, not a lock; the SAIJ cannot hold a load without live air. For true load-holding, consider an external rod lock or the related SAIL series.
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 SAIJ80BX65-40S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm. This creates a usable travel window of 25 to 65 mm, letting you set the exact retract end-position without adding external stops.
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