Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-75S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX140-75S 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 SAIJ80BX140-75S
It features a SUS304 stainless steel rod and a built-in magnet for CMSE or DMSE sensors. By integrating an external adjusting stopper at the rear, this model allows you to fine-tune the effective travel without swapping the cylinder.
With a 140 mm nominal stroke and a 75 mm adjustment code, you gain a highly flexible usable travel window of 65 to 140 mm. This wide adjustment range is ideal for machines that frequently process varying product sizes. The extruded aluminum barrel includes sensor grooves on both sides, and the G3/8 port ensures adequate flow for speeds up to 800 mm/s.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-75S |
|---|---|
| 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 SAIJ80BX140-75S
| 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 SAIJ80BX140-75S Is Used
Variable End-Stop Positioning
Ideal for assembly stations where the end-stop must be frequently fine-tuned across the 65 to 140 mm window to accommodate different part dimensions without changing cylinders.
Machine Changeover
Enables rapid product size adjustments on packaging lines, letting operators dial in the exact stroke length on the fly via the rear stopper screw.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-75S the Right Cylinder?
The 75 mm adjustment window is exceptionally useful for rapid machine changeovers, allowing operators to dial in the exact end-position without adding external stops. When specifying a replacement, match the 80 mm bore, 140 mm stroke, 75 mm adjustment, PT port threads, and the -S magnet requirement.
For any stroke of 300 mm or more, an external guide is recommended to support the load, but at 140 mm the 25 mm rod and M20x1.5 thread handle standard side loads effectively. Remember that the rear adjuster is a travel stop, not a locking device; if you need to hold a load securely without live air pressure, consider an AirTAC SAIL or BSAI cylinder. Mounting options for this series include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80BX140-75S FAQ
The rear adjusting screw acts as a mechanical stopper that lets you trim the effective travel back by up to 75 mm. This creates a usable stroke window of 65 to 140 mm, allowing precise end-position tuning at commissioning without external stops.
At 0.7 MPa, the push force increases to 3518N.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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