Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-50S 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 SAIJ80X175-50S
The AirTAC SAIJ80X175-50-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear mechanical stroke adjuster. Equipped with a standard carbon steel rod and a -S magnet for CMSE reed or DMSE solid-state sensors, it delivers a robust 2513N push force at 0.5 MPa. The built-in rear stopper allows you to fine-tune the effective travel down from the 175mm nominal stroke, providing a wide 125-175mm usable window for precise positioning without adding external stops.
This 80mm bore actuator uses PT tapered G3/8 ports and relies on variable air cushions at both ends to decelerate the load. The rear adjuster acts purely as a travel stop, meaning it cannot hold a load dynamically without live air pressure. For applications requiring true fail-safe load holding, you would need to step up to an AirTAC SAIL or BSAI series cylinder instead of relying on the standard SAIJ adjuster.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-50S |
|---|---|
| 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 SAIJ80X175-50S
| 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 SAIJ80X175-50S Is Used
Product Changeover Dials
Quickly adjust the 125-175mm travel window during packaging line format changes to accommodate different carton sizes without swapping out the entire actuator.
Commissioning End-Stops
Fine-tune the final retract position during machine setup, using the rear screw to dial in exact mechanical limits rather than relying on costly external stopper blocks.
Variable Pressing Force
Leverage the 2513N thrust at 0.5 MPa for pressing and clamping operations where the exact material contact depth needs on-site adjustment.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X175-50S the Right Cylinder?
Select this 80mm bore model when an application demands high thrust—2513N push and 2268N pull at 0.5 MPa—along with a highly flexible 125-175mm stroke window. If your process requires slightly less force, stepping down to a 63mm bore yields 1559N at 0.5 MPa, whereas moving up to a 100mm bore provides 3927N. The 50mm adjustment range is ideal for machines that undergo frequent product changeovers, allowing operators to dial in the exact end position at commissioning rather than machining custom spacers. Because this is a 175mm stroke, side loads are moderate, but you should still ensure adequate guiding for the 25mm rod if handling heavy lateral masses.
To match this exact ISO 15552 interchangeable replacement, specify an 80mm bore, 175mm stroke, 50mm rear adjustment range, PT tapered G3/8 ports, and the -S magnet option. The SAIJ series supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 footprints, deliberately omitting the FB, CA, CB, and CR brackets to keep the rear adjuster fully accessible.
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 SAIJ80X175-50S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from the 175mm nominal length by up to 50mm. This creates a usable travel window of 125-175mm, allowing you to set the exact retract end position during commissioning. The adjuster is a travel stop, not a lock, and does not hold the load without live air pressure.
At 0.5 MPa, this double-acting cylinder provides 2513N of push force and 2268N of pull force. At 0.9 MPa, the push force increases to 4523N. The operating speed ranges from 30-800 mm/s, and the -S magnet allows for precise end-of-stroke detection using CMSE or DMSE sensors.
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