Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 650mm 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
- Stroke650 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-100
The AirTAC SAIJ80X650-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 550 to 650 mm usable travel window. Delivering 2513 N of push force at 0.5 MPa, it handles substantial loads while allowing you to dial in the exact retract position without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides.
This specific SKU is configured with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads with a G3/8 connection. Because the 650 mm stroke is lengthy, the 25 mm rod diameter provides rigidity, but an external guide is still recommended to manage side loads. The rear adjuster acts purely as a travel stop for fine-tuning during commissioning, not as a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 650 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 SAIJ80BX650-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×650 | 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 SAIJ80BX650-100 Is Used
Product Changeovers
Dial in the 550-650 mm travel window during format size changes on a packaging line without physically replacing the actuator.
Machine Setup
Fine-tune the retract end-position precisely at commissioning to avoid costly mechanical hard-stops or custom spacer blocks.
Variable End Stops
Adjust the stroke dynamically on a sorting conveyor where the physical push-off distance must adapt to varying pallet depths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-100 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore falls short on power, as the 50 mm provides only 982 N of push force at 0.5 MPa compared to the 2513 N available here. The 100 mm adjustment window is ideal for product changeovers on a line, letting you shift the end-stop dynamically rather than swapping out a fixed-stroke SAI cylinder. If you need to hold the load without live air pressure, this adjuster will not suffice; you must specify a SAIL pneumatic lock or an external rod lock.
For a true ISO 15552 replacement match, verify the 80 mm bore, 650 mm nominal stroke, 100 mm adjustment range, G3/8 PT ports, and your required mounting style from the available Basic, FA, LB, TC, FTC, TCM1, and TCM2 options. Note that FB, CA, CB, and CR mounts are omitted from this series. Since the stroke is 650 mm, supporting the load with an external guide rail is critical to prevent excessive side-loading on the rod.
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 SAIJ80BX650-100 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 acts as a mechanical stop that trims the effective stroke, providing a usable travel window between 550 mm and 650 mm. It is designed for fine-tuning end positions at commissioning and does not lock or hold the load without live air.
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