Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-75S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-75S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke325 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-75S
The AirTAC SAIJ200X325-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers massive thrust, pushing 15708 N and pulling 15080 N at 0.5 MPa. The built-in adjuster allows you to trim the 325 mm nominal stroke back by up to 75 mm, creating a precise 250-325 mm usable travel window for high-tonnage product changeovers.
This unit features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. Fluid control is managed via a PT tapered G3/4 port, while the extruded aluminum barrel integrates sensor grooves on both sides for flexible switch mounting.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-75S |
|---|---|
| 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-75S
| 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 SAIJ200AX325-75S Is Used
Heavy Press Changeover
Dial in the 250-325 mm stroke window during heavy press setups to accommodate different material thicknesses without swapping out the entire cylinder.
Variable End-Stop Tuning
Use the 75 mm rear adjustment screw to precisely set the retract end-position during machine commissioning, avoiding the need for external stopper blocks.
Large Mold Positioning
Leverage the 15708 N push force at 0.5 MPa to shift heavy molds, relying on the adjuster to fine-tune the final resting position safely.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-75S the Right Cylinder?
Select this 200 mm bore cylinder when an application demands extreme force that smaller bores cannot provide, such as replacing a 160 mm bore that only yields 10053 N push force at 0.5 MPa. The adjustable stroke is chosen over a fixed SAI model when you need to fine-tune the retract end-position during commissioning without adding external mechanical stops. To match this exact replacement, specify: 200 mm bore, 325 mm stroke, 75 mm adjustment, PT G3/4 port, SUS420J2 rod, and the -S magnet.
Because the 325 mm stroke is substantial, the 40 mm diameter rod and M36x2 thread still require an external guide to prevent excessive side-loading on the piston. Note that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For positive load-holding, use an external rod lock or explore the SAIL or BSAI series. Mounting options are limited to 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 SAIJ200 Adjustable Cylinder SAIJ200AX325-75S FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At the maximum 1.0 MPa pressure, it achieves a push force of 3204 kgf.
The rear adjuster acts as a mechanical stop that allows you to shorten the 325 mm nominal stroke by up to 75 mm, providing a usable travel window of 250 to 325 mm. It only sets the travel end and does not lock the load without continuous air pressure.
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