Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 180mm 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
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-40S
The AirTAC SAIJ80X180-40-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 0.5MPa, utilizing a 25mm carbon steel piston rod and G3/8 PT ports. By integrating a -S magnet, this unit directly supports AirTAC CMSE reed and DMSE electronic solid-state sensors housed within the dual-side extruded aluminum barrel grooves.
This specific SKU provides a 140-180mm usable travel window, allowing you to trim the retract end-position by up to 40mm during commissioning. The rear screw functions purely as a mechanical stop to set deceleration alongside the standard air cushions; it does not hold the load without live air. For load-holding requirements without pneumatic pressure, an external rod lock or related SAIL and BSAI locking cylinders are required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAIJ80X180-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SAIJ80X180-40S Is Used
Product Changeovers
Dial in the 140-180mm travel window during format size changes on packaging lines without replacing the entire actuator.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to perfect pressing or clamping endpoints on the fly.
Sensor Integration
Leverage the built-in -S magnet with DMSE electronic sensors for precise position feedback in automated assembly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-40S the Right Cylinder?
Select this 80mm bore when an application demands higher thrust than a 63mm cylinder (1559N at 0.5MPa) but without the bulk of a 100mm unit (3927N at 0.5MPa). The adjustable 140-180mm stroke is ideal for product-size changeovers on a line, eliminating the need to physically swap cylinders or bolt on external stops. When replacing an ISO 15552 cylinder, match the 80mm bore, 180mm nominal stroke, 40mm adjustment range, G3/8 PT ports, and the -S magnet requirement.
Because the 180mm stroke is relatively compact for this bore size, side-load stress on the 25mm rod is minimal, though external guidance is always recommended for heavy radial loads. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets. Operating speed ranges from 30-800mm/s.
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 SAIJ80X180-40S FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.9MPa, the push force increases to 4523N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 180mm nominal stroke by up to 40mm, creating a 140-180mm usable travel window. It sets the end position but does not lock the load without live air pressure.
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