Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40S
The AirTAC 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
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. It delivers 2513 N of push force at 0.5 MPa, making it a robust choice for medium-duty positioning. 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 | 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 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?
Choose this 80 mm bore when an application requires around 2513 N of push force at 0.5 MPa, stepping up from a 63 mm bore that provides 1559 N. 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 0.5 MPa, it provides 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 5026 N.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.