Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20S
The AirTAC SAIJ200X280-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 280 mm stroke that can be fine-tuned backward by up to 20 mm, yielding a precise 260-280 mm usable travel window. This bore delivers immense thrust, generating 15708 N of push force and 15080 N of pull force at 0.5 MPa, peaking at 3204 kgf at 1.0 MPa.
This configuration features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. As an extruded aluminum profile cylinder, it carries sensor grooves on both sides. The rear adjuster functions strictly as a mechanical stop to dial in the retract end position during commissioning, not as a lock to hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 280 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 SAIJ200AX280-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×280 | 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 SAIJ200AX280-20S Is Used
Heavy Press Tuning
Dial in the exact 260-280 mm end-stop during heavy press commissioning to accommodate material thickness variations without swapping cylinders.
Product Changeover
Adjust the retract position on the fly for different pallet sizes on a conveyor line, utilizing the 20 mm trim range for rapid format changes.
Large Assembly Stops
Provide a robust mechanical stop for large-scale assembly fixtures, relying on the 3204 kgf maximum force capacity to halt heavy payloads safely.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20S the Right Cylinder?
Selecting this 200 mm bore cylinder is appropriate when your application requires massive output force that exceeds the 11045 N push capacity of the 125 mm bore at 0.5 MPa. The adjustable stroke is chosen over a fixed SAI cylinder when you need variable end-stops for product size changeovers or precise end-position tuning without adding external stops. For load-holding without continuous air pressure, this cylinder is insufficient; you must integrate a SAIL pneumatic lock, a BSAI clamp-lock, or an external rod lock.
Because this unit features a 280 mm stroke, the 40 mm rod and M36x2 rod thread provide substantial rigidity, but an external guide is still recommended to prevent excessive side-loading on the piston. To achieve exact ISO 15552 interchangeability, match the 200 mm bore, 280 mm stroke, 20 mm adjustment, PT tapered port threads, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR brackets.
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 SAIJ200AX280-20S 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 its maximum rated pressure of 1.0 MPa, it delivers up to 3204 kgf.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective stroke from 280 mm down to 260 mm. This creates a 260-280 mm travel window for fine-tuning the end position without moving the cylinder mounts.
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