Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20
The AirTAC SAIJ200X300-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 280 to 300 mm. It belongs to the highest force class in the series, generating 15708 N of push thrust at 0.5 MPa and reaching 28274 N at 0.9 MPa. The extruded aluminum barrel features sensor grooves on both sides, though this specific unit lacks the -S magnet option for electronic or reed switch integration.
This model utilizes an SUS420J2 stainless steel rod for enhanced durability against moisture and corrosion. Because the 300 mm stroke is substantial, the 40 mm rod diameter and M36x2 thread provide necessary rigidity, though an external guide is strongly recommended to manage side loads. The rear adjuster acts purely as a mechanical stop to fine-tune the retract position and must not be confused with a lock, as the cylinder cannot hold loads without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 300 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 SAIJ200AX300-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×300 | 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 SAIJ200AX300-20 Is Used
Heavy Press Tuning
Dials in the exact 280-300 mm end-stop position during heavy press commissioning to accommodate material thickness variations.
Product Changeover
Adjusts the retract distance on the fly for different pallet sizes on a high-thrust conveyor sorting line.
Large Mold Setup
Fine-tunes the retraction point of large molding tools without machining custom external stopper blocks.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20 the Right Cylinder?
Selecting this 200 mm bore cylinder is appropriate when application forces exceed the 10053 N push capacity of the 160 mm variant at 0.5 MPa, requiring the 15708 N available here. The 20 mm adjustment range is chosen over a fixed-stroke SAI cylinder when a machine requires precise end-position tuning during commissioning or product-size changeovers without external stops. For load-holding without continuous air pressure, a SAIL air-released lock or BSAI clamp-lock cylinder is required instead of relying on the SAIJ adjuster.
To achieve a direct ISO 15552 replacement match, verify the 300 mm stroke, 20 mm adjustment range, PT tapered port threads, and the specific mounting bracket from the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2. Given the 300 mm stroke, ensure your mounting configuration includes an external guide to support the heavy 40 mm rod and prevent excessive side-loading on the front cap seals.
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 SAIJ200AX300-20 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 0.9 MPa, the push force increases to 28274 N.
The rear mechanical screw allows you to shorten the effective travel from the nominal 300 mm down to 280 mm. It functions as a physical stop for end-position tuning and is not a locking device.
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