Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX50-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40S
The AirTAC SAIJ80X50-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 10 to 50 mm usable travel window from its 50 mm nominal stroke. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This variant is equipped with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for CMSE reed or DMSE electronic sensors. The rear stopper allows precise end-position tuning at commissioning without swapping cylinders or adding external stops, though it acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SAIJ80BX50-40S Is Used
Product Changeover
Dial in the 10 to 50 mm travel window instantly on packaging lines handling varying carton sizes without changing hardware.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to achieve precise mechanical spacing using the rear adjuster.
Sensor-Ready Automation
Leverage the integrated magnet and dual sensor grooves to mount DMSE solid-state switches for reliable position feedback.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40S the Right Cylinder?
The 40 mm adjustment range is ideal for machines requiring variable end-stops for product changeovers, replacing the need for a fixed-stroke SAI cylinder. Because the stroke is short at 50 mm, side-load stress is minimal, but the M20x1.5 rod thread and 25 mm rod diameter handle high bending moments well.
When specifying a replacement, match the 80 mm bore, 50 mm stroke, 40 mm adjustment, PT tapered ports, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. For load-holding without live air, select a SAIL or BSAI cylinder instead, as the adjuster here is strictly a stop, not a lock.
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 SAIJ80BX50-40S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel by up to 40 mm. This creates a usable stroke window of 10 to 50 mm, allowing you to fine-tune the end position at commissioning without replacing the cylinder.
At the maximum operating pressure of 1.0 MPa, the push force reaches 5026 N.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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