Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 175mm 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
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20S
The AirTAC SAIJ80X175-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 155 to 175 mm, allowing you to dial back the nominal 175 mm stroke by up to 20 mm during commissioning. In the 80 mm bore class, it generates 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it suitable for heavier actuation tasks.
This variant includes a standard carbon steel rod and a -S magnet for position sensing with AirTAC CMSE reed or DMSE solid-state switches. The extruded aluminum barrel incorporates sensor grooves on both sides, and the G3/8 PT tapered ports help deliver the air volume needed for dynamic movement at speeds of 30 to 800 mm/s.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 175 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 SAIJ80X175-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×175 | 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 SAIJ80X175-20S Is Used
Machine Changeover
Fine-tune the 155-175 mm travel end-stop during product size changes without physically swapping the cylinder or reworking mounting plates.
Press Fit Tuning
Dial in the exact 80 mm bore thrust, up to 2513 N at 0.5 MPa, to achieve consistent pressing force and depth without mechanical shims.
Material Handling
Use the double-acting profile cylinder to push varying package sizes, relying on the rear adjuster to accommodate different product lengths on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20S the Right Cylinder?
Choose this 80 mm bore model when a 50 mm bore (982 N push at 0.5 MPa) is insufficient for your load, but a 100 mm bore (3927 N push at 0.5 MPa) would be excessive. The adjustable stroke is ideal for applications requiring precise end-position tuning without swapping cylinders or adding external stops. The rear adjuster acts strictly as a travel stop for deceleration; it does not hold the load without live air. For fail-safe load holding, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 175 mm stroke, 20 mm adjustment range, G3/8 PT ports, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the 175 mm stroke is under 300 mm, side-load stress is moderate, but the 25 mm rod and M20x1.5 thread still handle lateral forces well if an external guide supports long unsupported loads.
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 SAIJ80X175-20S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw allows you to shorten the effective travel from the 175 mm nominal stroke down to a minimum of 155 mm. This creates a 20 mm adjustable window for fine-tuning the end position at commissioning without replacing the cylinder.
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