Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-30S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX185-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 185mm 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
- Stroke185 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 SAIJ80BX185-30S
The AirTAC SAIJ80X185-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the rear stopper screw, you can fine-tune the effective travel down by up to 30 mm, creating a precise 155-185 mm usable window without adding external physical stops.
This adjustable-stroke model includes a piston magnet for position detection, working seamlessly with AirTAC CMSE reed and DMSE electronic sensors housed in the dual-side barrel grooves. The rear adjuster acts purely as a travel stop to set deceleration endpoints; it is not a locking mechanism, so the cylinder cannot hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 185 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 SAIJ80BX185-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×185 | 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 SAIJ80BX185-30S Is Used
Machine Setup Commissioning
Dial in the exact 155-185mm end-position during initial machine commissioning, avoiding the need to swap cylinders or fabricate external shims.
Product Size Changeover
Quickly adapt the retract end-stop on production lines running multiple product sizes, using the rear screw to shift the 30mm adjustment window.
Variable End-Stop Diverter
Provide adjustable physical stops for conveyor diverters or indexing mechanisms where the exact retract distance varies per batch.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-30S the Right Cylinder?
If your setup demands less force, stepping down to a 50mm bore yields 982N; if you need more power, a 100mm bore provides 3927N. The SAIJ80X185-30-S is selected over a fixed SAI cylinder when product changeovers require variable end-stops rather than machining new stopper blocks.
This configuration features a PT tapered G3/8 port and a 25mm SUS304 rod. Because the 185mm stroke is under the 300mm threshold, side-load risks are moderate, but the robust 25mm rod thread handles standard bending moments well. For true load-holding without continuous air, consider an external pilot-operated check valve or switch to the SAIL or BSAI series. Mounting options 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 SAIJ80BX185-30S FAQ
The rear adjuster screw allows you to shorten the nominal 185mm stroke by up to 30mm, providing an effective travel window between 155mm and 185mm. It functions as a mechanical stop to tune the end position and does not lock the load.
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
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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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