Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX140-50S 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 SAIJ80AX140-50S
The AirTAC SAIJ80X140-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 140 mm stroke that can be fine-tuned backward by up to 50 mm, creating a precise 90-140 mm usable travel window.
This model includes a magnet for position sensing, working seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical stop to dial in end-of-travel positions during commissioning without adding external stops. It is important to note that this adjuster and the dual air cushions decelerate the load but do not hold it without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-50S |
|---|---|
| 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 SAIJ80AX140-50S
| 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 SAIJ80AX140-50S Is Used
Product Changeover Jigs
Dial in the exact end-stop for varying part sizes on a single fixture by adjusting the rear screw from 140 mm down to 90 mm without changing hardware.
Machine Setup Tuning
Fine-tune the final clamping position during commissioning to perfect a process, using the 50 mm window to absorb mechanical tolerance stack-ups.
Variable End-Stop Forming
Adjust the retract distance on the fly for a press or forming operation, ensuring precise contact without reprogramming the machine controller.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-50S the Right Cylinder?
The 50 mm adjustment range is ideal for product changeovers on a line, allowing you to shift the end-stop from 140 mm down to 90 mm without swapping the cylinder. For fixed travel requirements without the need for field tuning, the standard SAI cylinder is a simpler alternative.
Dimensionally interchangeable per ISO 15552, this unit uses PT tapered ports (G3/8) and supports mounting options Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the 25 mm rod and M20x1.5 thread handle high side loads, and the stroke is under 300 mm, external guides are less critical here than on longer strokes. If you need true load-holding without live air, consider the SAIL or BSAI series instead, as the SAIJ adjuster is 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 SAIJ80AX140-50S FAQ
At the maximum 1.0 MPa pressure, it can output up to 513 kgf.
The rear adjuster screw lets you mechanically shorten the nominal 140 mm stroke by up to 50 mm, providing a usable travel window of 90 to 140 mm. It acts as a physical stop to set the end position and is not a lock.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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