Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 400mm 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
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-50S
The AirTAC SAIJ200X400-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 350-400 mm from its 400 mm nominal stroke. Built to deliver immense thrust, it generates 15708 N of push force and 15080 N of pull force at 0.5 MPa, scaling up to 21991 N push at 0.7 MPa. This makes it ideal for heavy-duty pressing and high-tonnage positioning tasks.
This variant features a SUS420J2 stainless steel rod (code A) for superior corrosion resistance and includes a magnet (-S) for compatibility with AirTAC CMSE reed and DMSE electronic solid-state sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and the PT tapered port threads ensure a robust, leak-free pneumatic connection at the G3/4 port size.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 400 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 SAIJ200AX400-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×400 | 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 SAIJ200AX400-50S Is Used
Heavy-Duty Pressing
Delivers up to 21991 N of push force at 0.7 MPa for securely seating large bearings or heavy components.
Machine Changeover
Dial in the exact 350-400 mm retract stop during line format changes without physically swapping the cylinder.
Automotive Assembly
Handles massive fixtures and heavy pallets, using the SUS420J2 rod to resist harsh plant environments.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-50S the Right Cylinder?
Selecting this 200 mm bore model is appropriate when your application requires maximum force, as smaller bores like the 160 mm variant only provide 10053 N push at 0.5 MPa. The adjustable stroke is chosen over a fixed SAI cylinder when you need to fine-tune the retract end-position during commissioning or product changeover without bolting on external stops. Note that the rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding, consider an external rod lock or the SAIL or BSAI series.
Because the 400 mm stroke is substantial, the 40 mm rod diameter and M36x2 thread provide high rigidity, but an external guide is still recommended to prevent excessive side-loading on the piston. This model uses the SAIJ mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. Operating speed is capped at 30-500 mm/s for this large bore size.
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 SAIJ200AX400-50S FAQ
It features a rear adjuster screw that lets you shorten the effective travel by up to 50 mm, creating a 350-400 mm usable window. This allows precise end-position tuning at commissioning without adding external stops.
At 0.5 MPa, it provides 15708 N of push force and 15080 N of pull force. At 0.7 MPa, the push force increases to 21991 N.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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