Airtac SAIJ80 Adjustable Cylinder SAIJ80X170-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X170-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 170mm 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
- Stroke170 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X170-20S
The AirTAC SAIJ80X170-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N of push force at 0.5MPa and features a built-in magnet for position sensing. By turning the rear screw, you can trim the effective travel within a 150-170mm window, allowing precise end-position tuning during commissioning without swapping hardware.
This bore size utilizes a 25mm carbon steel rod with an M20x1.5 thread, paired with 36mm variable air cushions at both ends to manage kinetic energy. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X170-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X170-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 170 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 SAIJ80X170-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×170 | 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 SAIJ80X170-20S Is Used
Machine Changeover
Quickly dial in the 150-170mm stroke window during product family transitions without changing cylinder mounts or adding external shims.
End-Position Tuning
Fine-tune the retract end-stop during initial commissioning to perfectly seat parts, absorbing mechanical tolerance variations mechanically.
Variable End Stops
Ideal for automated lines processing slightly different part lengths, using the rear screw to adapt the stroke precisely on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X170-20S the Right Cylinder?
Select this 80mm bore when an application requires higher thrust than a 63mm cylinder (which provides 1559N push at 0.5MPa) but has spatial or pressure constraints preventing a 100mm unit. The adjustable 150-170mm stroke is ideal for product-size changeovers on a line, letting operators dial in the exact end-stop mechanically. For fixed-travel needs without setup variance, the standard SAI series is sufficient.
Because the nominal stroke is 170mm, side-load risks are moderate, but always ensure external guiding for heavy loads. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series. This unit features PT tapered ports and a -S magnet for reliable switch integration.
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 SAIJ80X170-20S FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the nominal 170mm stroke by up to 20mm, creating a usable travel window of 150-170mm. The adjuster acts as a mechanical stop and does not lock the load without live air pressure.
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