Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20 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 SAIJ80X175-20
The AirTAC SAIJ80X175-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 175 mm travel that can be fine-tuned backward by up to 20 mm, yielding a usable window of 155-175 mm. This bore delivers 2513 N of push force at 0.5 MPa, making it well-suited for medium to heavy actuation tasks.
The external stopper screw allows precise end-position tuning during commissioning without adding external stops. The adjuster acts solely as a travel stop and does not hold the load without live air pressure. It uses a PT tapered G3/8 port, a 25 mm carbon steel rod with an M20x1.5 thread, and variable air cushions at both ends. Mounting options include the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20 |
|---|---|
| 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 SAIJ80X175-20
| 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 SAIJ80X175-20 Is Used
Machine Setup Tuning
Dial in the exact 155-175 mm end position during commissioning to perfectly align tooling without machining external stop blocks.
Product Changeover
Quickly adjust the retract stop by up to 20 mm on a packaging line when switching to a different carton size.
Variable End-Stop Actuation
Handle medium-duty positioning tasks requiring 2513 N of push force at 0.5 MPa with a fine-tunable travel endpoint.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-20 the Right Cylinder?
Select this 80 mm bore when your application requires the 2513 N push force at 0.5 MPa, but a 63 mm bore (offering 1559 N) would be underpowered. Conversely, step up to a 100 mm bore if you need 3927 N. Choose this adjustable-stroke model over a fixed SAI when you need variable end-stops for product changeovers or precise machine setup.
To replace an ISO 15552 cylinder, match the 80 mm bore, 175 mm stroke, 20 mm adjustment, PT G3/8 port, and your required mounting style. This unit has no magnet, so add a -S suffix if you need CMSE or DMSE sensor detection. Because the 175 mm stroke is under 300 mm, side-load concerns are minimal, though the 25 mm rod handles standard loads well.
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 SAIJ80X175-20 FAQ
At 0.5 MPa, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 513 kgf.
The rear adjuster screw lets you shorten the 175 mm nominal stroke by up to 20 mm, providing a usable travel window of 155-175 mm. This stopper only sets the end position and does not lock the load without live air pressure.
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