Airtac SAIJ200 Adjustable Cylinder SAIJ200X325-20
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X325-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 325mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke325 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200X325-20
The AirTAC SAIJ200X325-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust up to 15708N at 0.5 MPa. It features a carbon steel rod and a PT G3/4 port. By integrating an external adjusting screw, this unit allows you to fine-tune the retract end position, creating a usable travel window between 305 and 325 mm without swapping out the entire actuator.
This adjustable-stroke design is ideal for heavy-duty product changeovers, letting you dial in the end stop precisely at commissioning. The extruded aluminum barrel includes sensor grooves on both sides, and the rear adjuster functions strictly as a travel stop to set deceleration, not as a lock to hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X325-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X325-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 325 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200X325-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | 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 SAIJ200 Adjustable Cylinder SAIJ200X325-20 Is Used
Heavy Press Tuning
Dial in the exact 305-325mm end-stop during press commissioning to accommodate material thickness variations without adding external stops.
Product Line Changeover
Quickly adjust the retract position on a 200mm bore actuator when switching between different large-scale product sizes on the manufacturing line.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X325-20 the Right Cylinder?
Because the 325mm stroke exceeds 300mm, the 40mm rod diameter and M36x2 thread provide robust support, but an external guide is still recommended to prevent excessive side-loading on the piston.
Choose the adjustable SAIJ format over a fixed-stroke SAI cylinder when your setup requires variable end-stops or precise end-position tuning during machine commissioning. For an exact ISO 15552 replacement, match the 200mm bore, 325mm stroke, 20mm adjustment, PT G3/4 port, and mounting style (choosing from Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that a plain SAIJ does not hold position without live air; for load-holding, consider the SAIL or BSAI series.
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 SAIJ200 Adjustable Cylinder SAIJ200X325-20 FAQ
The rear adjuster screw acts as a mechanical stop that trims the effective travel. For this 325mm nominal stroke model, you can adjust the usable travel window down to 305mm, allowing precise end-position tuning without changing the cylinder.
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