Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-10S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-10S 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 SAIJ80BX650-10S
The AirTAC SAIJ80X650-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 4523N push force at 0.9 MPa and features a SUS304 stainless steel rod for superior corrosion resistance. By turning the external rear screw, you can fine-tune the effective travel within a 640-650 mm window, enabling precise end-position calibration without swapping hardware.
This unit includes a piston magnet for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel provides sensor grooves on both sides for flexible mounting. It is important to note that the rear adjuster functions strictly as a travel stop to set deceleration endpoints; it does not lock or hold the load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-10S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-10S |
|---|---|
| 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 SAIJ80BX650-10S
| 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 SAIJ80BX650-10S Is Used
Machine Changeover
Dial in the 640-650 mm travel window during product size changes to set exact end positions without replacing the cylinder.
Variable End Stops
Use the rear adjuster to fine-tune the retraction point during machine commissioning for precise fixture alignment.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod for reliable actuation in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-10S the Right Cylinder?
Choose this adjustable 80 mm bore cylinder when your setup requires exact end-stop tuning during commissioning or product changeovers, avoiding the need to bolt on external stops or buy a fixed-stroke SAI cylinder. If your application demands less force, stepping down to a 63 mm bore yields 2805N at 0.9 MPa, whereas moving up to a 100 mm bore provides 7068N for heavier payloads. To replace an existing ISO 15552 cylinder, match the 80 mm bore, 650 mm stroke, 10 mm adjustment, PT tapered port thread, and the -S magnet option.
Because this model features a 650 mm stroke, the extended unsupported length increases susceptibility to side-loading forces. While the 25 mm rod diameter and M20x1.5 rod thread offer substantial structural rigidity, you should incorporate an external guide rail to prevent premature seal wear and ensure smooth linear motion.
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 SAIJ80BX650-10S FAQ
At 0.9 MPa operating pressure, this 80 mm bore cylinder provides a push force of 4523N and a pull force of 2268N. It can achieve a maximum push force of 513 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the 650 mm nominal stroke by up to 10 mm, creating a 640-650 mm usable travel window. This stop mechanism only sets the end position for deceleration; it does not hold the load without live air pressure.
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