Airtac SAIJ80 Adjustable Cylinder SAIJ80X190-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X190-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 190mm 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
- Stroke190 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X190-50
The AirTAC SAIJ80X190-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 4523N of push force at 0.9 MPa and provides a usable travel window of 140 to 190mm, letting you dial back the nominal 190mm stroke by up to 50mm. This built-in adjustability allows for fine end-position tuning at commissioning without swapping the cylinder or adding external stops.
Equipped with a 25mm carbon steel piston rod and an M20x1.5 thread, it handles side loads well, though long unsupported strokes still require an external guide. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear adjuster acts as a travel stop to set deceleration, not a lock, so live air is required to hold the load.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X190-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X190-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 190 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 SAIJ80X190-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×190 | 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 SAIJ80X190-50 Is Used
Variable End-Stop Setup
Dial in the exact 140 to 190mm travel distance during machine commissioning to accommodate varying product lengths without installing external physical stops.
Product Changeover
Quickly adjust the retract position by up to 50mm when switching the production line to a new item size, minimizing downtime and mechanical rework.
Fine Position Tuning
Use the rear stopper screw to precisely set the end-of-stroke deceleration point, optimizing the air cushion performance for the specific load.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X190-50 the Right Cylinder?
Choose this 80mm bore when you need more thrust than the 50mm option (1767N push at 0.9 MPa) but less than the 100mm class (7068N). The 50mm adjustment range is ideal for product-size changeovers on a line, giving you a variable end-stop to accommodate different part lengths without changing hardware. If you need to hold position without continuous air pressure, a plain SAIJ will not suffice; you should look to the SAIL air-released lock or BSAI clamp-lock instead.
For an exact ISO 15552 replacement, match the 80mm bore, 190mm stroke, 50mm adjustment, PT tapered port thread, and the required mounting accessory. Because the nominal stroke is under 300mm, side-load concerns are minimal, but always ensure the rod thread is properly secured. Without a -S magnet, this configuration does not support CMSE or DMSE sensors.
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 SAIJ80X190-50 FAQ
At an operating pressure of 0.9 MPa, this 80mm bore cylinder provides a push force of 4523N and a pull force of 2268N. It can deliver a maximum push force of 513 kgf at 1.0 MPa.
The rear adjuster acts as an external stopper that lets you shorten the effective stroke from its nominal 190mm down to as little as 140mm. This creates a 50mm usable travel window for fine-tuning the end position without replacing the cylinder.
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