Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75S
The AirTAC SAIJ80X185-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N push force at 0.5 MPa and features a generous 75mm adjustment range, yielding a usable travel window between 110mm and 185mm. This wide tuning band is ideal for machines processing multiple product sizes, letting operators dial in the exact retract position without swapping hardware.
Fitted with a PT tapered port and a 25mm carbon steel rod with an M20x1.5 thread, this unit handles demanding cycles. The -S magnet option integrates seamlessly with AirTAC CMSE reed and DMSE electronic sensors housed in the dual-side barrel grooves. Remember that the rear screw acts purely as a travel stop for deceleration; it does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75S |
|---|---|
| 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 | 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 SAIJ80X185-75S
| 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 SAIJ80X185-75S Is Used
Variable End-Stop Tuning
Dial in the retract stroke from 110mm to 185mm during commissioning to accommodate varying material lengths without installing external physical stops.
Product Size Changeover
Quickly reconfigure the machine stroke by up to 75mm when switching the production line to a different format or package size.
Assembly Pressing
Leverage the 2513N push force at 0.5 MPa for pressing operations, using the adjuster to set precise bottoming positions for delicate components.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75S the Right Cylinder?
Select this 80mm bore when an application requires higher thrust than a 63mm cylinder (which provides 1559N push at 0.5 MPa) but without the bulk of a 100mm unit. The 75mm adjustment window is exceptionally wide, making the SAIJ80X185-75-S perfect for product changeovers where retract distances vary significantly. Because the nominal stroke is 185mm, side-load risks are moderate, but always ensure external guiding if the load is heavy or off-center. For load-holding without continuous air, skip this standard adjuster and specify a SAIL or BSAI lock model instead.
To match this cylinder for an ISO 15552 replacement, confirm the 80mm bore, 185mm nominal stroke, 75mm adjuster, PT port thread, and the -S magnet requirement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets.
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 SAIJ80X185-75S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw lets you shorten the effective stroke by up to 75mm, creating a usable travel window of 110mm to 185mm. It acts as a mechanical stop to set the end position and does not hold the load without live air.
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