Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 200mm 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
- Stroke200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20S
The AirTAC SAIJ80X200-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 25 mm carbon steel piston rod and generates 2513 N of push force at 0.5 MPa. The integrated -20 mm adjustment mechanism allows you to trim the effective travel back, creating an exact 180-200 mm usable stroke window for fine-tuning end positions at commissioning.
This version includes a magnet for position sensing and uses PT tapered port threads. The rear adjuster acts purely as a mechanical stop to set the retract end-position without requiring external stops, but it does not hold the load dynamically without live air pressure. It supports AirTAC CMSE reed and DMSE electronic sensors fitted into the dual-side extruded aluminum barrel grooves.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 200 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 SAIJ80X200-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×200 | 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 SAIJ80X200-20S Is Used
Machine Changeovers
Dial in the 180-200 mm travel window during product size transitions on a packaging line without physically replacing the cylinder.
End-Stop Calibration
Fine-tune the retract position during initial machine commissioning to perfectly align a 2513 N clamping action.
Variable Forming Stops
Adjust the mechanical rear stopper to accommodate different material lengths in an automated assembly cell.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20S the Right Cylinder?
Select this 80 mm bore cylinder when your application requires high thrust (up to 2513 N push at 0.5 MPa) alongside precise end-stop tuning. If your force requirements are lower, stepping down to a 63 mm bore yields 1559 N of push force, while moving up to a 100 mm bore provides 3927 N. The adjustable stroke is ideal for machine changeovers where product sizes vary, eliminating the need to physically swap a fixed-stroke SAI cylinder.
For a true ISO 15552 replacement match, verify the 80 mm bore, 200 mm stroke, -20 mm adjustment, PT port thread, and the -S magnet option. Note that the rear adjuster and air cushions only decelerate and set the travel end; they do not function as a lock. For fail-safe load holding without live air, consider the SAIL pneumatic lock or BSAI clamp-lock cylinders. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80X200-20S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It operates at speeds ranging from 30 to 800 mm/s.
The rear adjuster screw allows you to shorten the nominal 200 mm stroke by up to 20 mm, providing a usable travel window of 180 to 200 mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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