Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 325mm 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
- Stroke325 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-50S
The AirTAC SAIJ80X325-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 275 to 325 mm. Driven by a 25 mm carbon steel rod with M20x1.5 threading, it generates 2513 N of push force at 0.5 MPa and 4523 N at 0.9 MPa. The integrated -S magnet enables position feedback via CMSE reed or DMSE electronic sensors fitted into the dual-side barrel grooves.
This adjustable-stroke design allows precise end-position tuning during commissioning without adding external stops. The 50 mm rear adjuster acts purely as a travel stop for the retract end and does not hold the load without live air pressure. It utilizes a PT tapered port thread and includes variable air cushions at both ends to manage kinetic energy across its 30-800 mm/s speed range.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 325 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 SAIJ80X325-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×325 | 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 SAIJ80X325-50S Is Used
Machine Setup Tuning
Dial in the exact retract end-position during commissioning using the 50 mm adjustment window, eliminating the need to swap cylinders when aligning tooling.
Product Changeover
Quickly modify the effective stroke from 275 to 325 mm to accommodate varying product sizes on a single line without bolting on external stoppers.
Variable End Stops
Position heavy pallets or actuators precisely, leveraging the 4523 N push force while fine-tuning the travel limit to match the conveyor layout.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-50S the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust, such as 4523 N at 0.9 MPa, but still needs micro-adjustments to the retract position. If you need less force, the 63 mm bore provides 2805 N at 0.9 MPa; if your setup demands more power, the 100 mm bore yields 7068 N. Because the 325 mm stroke exceeds 300 mm, an external guide is highly recommended to prevent excessive side-loading on the extended rod.
Select the SAIJ adjustable version over a fixed SAI cylinder when you need to dial in end-stops during machine setup or product changeovers. To replace this ISO 15552 cylinder, match the 80 mm bore, 325 mm stroke, 50 mm adjustment, PT port thread, and -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. For load-holding without live air, use an external rod lock or pilot-operated check valve, as the rear adjuster is not a brake.
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 SAIJ80X325-50S FAQ
At 0.5 MPa, 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 acts as a mechanical stop that lets you shorten the effective travel from the nominal 325 mm down to 275 mm. It only sets the end position and does not lock or hold the load without live air pressure.
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