Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 500mm 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
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-40S
The AirTAC SAIJ80X500-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. Its 500mm nominal stroke can be fine-tuned down by up to 40mm, creating a precise 460-500mm usable travel window for exact end-position calibration. This model features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing.
The rear adjuster functions strictly as a mechanical stop to set the travel end and relies on the integrated air cushion for deceleration; it does not lock the load without continuous air pressure. For load-holding requirements without live pressure, consider the SAIL or BSAI variants. This extruded aluminum profile cylinder supports PT tapered ports and operates at speeds between 30-800mm/s.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 500 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 SAIJ80BX500-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SAIJ80BX500-40S Is Used
Machine Changeover
Quickly dial in the 460-500mm travel window during product size transitions without swapping out the entire cylinder or re-engineering fixed external stops.
End-Position Calibration
Fine-tune the retract stroke by up to 40mm at commissioning to achieve precise end-of-stroke positioning for high-accuracy pressing or forming tasks.
Variable Diverting
Adjust the stroke length on the fly to accommodate different package sizes on a sorting line, ensuring accurate physical contact without reprogramming.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-40S the Right Cylinder?
Selecting this 80mm bore cylinder is ideal when an application requires 2513N push force at 0.5 MPa but demands on-site adjustability rather than a fixed stop. If your setup needs less force, stepping down to a 63mm bore yields 1559N; if more thrust is required, a 100mm bore provides 3927N. Choose the SAIJ adjustable design over the fixed-stroke SAI to dial in the exact 460-500mm stroke during commissioning or product changeovers without adding external stops.
Because this model features a 500mm stroke, the 25mm rod diameter and M20x1.5 rod thread provide substantial support, but an external guide is strongly recommended to prevent excessive side-loading on the unsupported rod. This SKU is dimensionally interchangeable per ISO 15552 and includes a -S magnet for CMSE reed or DMSE electronic sensors. It supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR.
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 SAIJ80BX500-40S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At its maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster acts as a mechanical stop that allows you to shorten the 500mm nominal stroke by up to 40mm, providing a usable travel window of 460-500mm. It sets the end position but does not hold the load without live air pressure.
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