Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX140-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 140mm 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
- Stroke140 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 SAIJ80BX140-50S
The AirTAC SAIJ80X140-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down by 50 mm, creating a 90-140 mm usable stroke window. The integrated -S magnet supports CMSE reed and DMSE electronic sensors for exact end-of-travel detection.
Built for demanding environments, this unit uses a SUS304 stainless steel rod (code B) for superior corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel incorporates sensor grooves on both sides for flexible mounting. The rear adjuster acts purely as a mechanical stop to set the end position and must not be confused with a locking device, as it cannot hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 140 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 SAIJ80BX140-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SAIJ80BX140-50S Is Used
Product Changeover
Dial in the 90-140 mm travel window on packaging lines to accommodate different carton sizes without physically replacing the actuator.
End-Stop Tuning
Fine-tune the retract position during machine setup to perfect pressing or clamping operations, absorbing mechanical tolerances via the rear screw.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-50S the Right Cylinder?
The 50 mm adjustment range is ideal for product changeovers, allowing operators to dial in the exact end-stop during commissioning without swapping out the physical cylinder or adding external stops. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead, as the SAIJ adjuster is only a travel stop.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 140 mm stroke, 50 mm adjustment, G3/8 PT ports, and the -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because this unit has a 140 mm stroke, the 25 mm rod diameter and M20x1.5 rod thread handle side loads well, but an external guide is still recommended for heavy lateral loads.
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 SAIJ80BX140-50S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 140 mm stroke by up to 50 mm, providing a usable travel window of 90 to 140 mm. It only sets the end position and does not lock or hold the load without live air pressure.
It operates at speeds between 30 and 800 mm/s.
Authorized Export Seller
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.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-50S
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