Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50 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 SAIJ80BX65-50
The AirTAC SAIJ80X65-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 65mm stroke back by up to 50mm. This yields a highly versatile 15-65mm usable travel window, letting you fine-tune the retract end position precisely during commissioning without adding external stops. It delivers a robust 4523N of push force at 0.9MPa, making it ideal for heavy actuation.
This SKU is configured with a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads (G3/8). The 25mm rod diameter and M20x1.5 thread provide excellent rigidity, handling higher side loads than smaller bores. The rear adjuster acts purely as a mechanical stop to set the travel end, complementing the standard variable air cushions at both ends.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50 |
|---|---|
| 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 SAIJ80BX65-50
| 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 SAIJ80BX65-50 Is Used
Machine Changeover
Dial in the 15-65mm travel window during product size changes on a packaging line without swapping the entire cylinder.
End-Position Tuning
Fine-tune the retract stroke at commissioning to hit exact mechanical endpoints, avoiding the need to machine external spacers.
Heavy Duty Clamping
Leverage the 4523N push force to secure heavy workpieces, using the adjustable stop to set the exact clamping depth.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX65-50 the Right Cylinder?
Choose this 80mm bore when your application requires more force than a 63mm cylinder (which provides 2805N push at 0.9MPa) but you want to avoid the larger footprint of a 100mm bore. The 15-65mm adjustable window is perfect for product changeovers on a line where end-position tuning is frequently required. Because the stroke is under 300mm, side-load stress is manageable, though long unsupported loads still need an external guide. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ does not hold position without live air. For load-holding without pressure, consider the SAIL or BSAI series. When replacing an ISO 15552 cylinder, match the 80mm bore, 65mm stroke, 50mm adjustment, PT G3/8 ports, and SUS304 rod material.
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 SAIJ80BX65-50 FAQ
At 0.9MPa operating pressure, this 80mm bore cylinder generates 4523N of push force and 4071N of pull force. It can deliver up to 513 kgf at its maximum 1.0MPa pressure.
The rear adjuster screw allows you to shorten the 65mm nominal stroke by up to 50mm, creating a 15-65mm usable travel window. The adjuster acts as a mechanical stop to set the end position, but it is not a lock and requires live air to maintain force.
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