Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 45mm 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
- Stroke45 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-20S
The AirTAC SAIJ200X45-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 45mm stroke by up to 20mm. This yields a highly flexible 25-45mm usable travel window for exact end-position tuning at commissioning. It delivers immense thrust, pushing 15708N and pulling 15080N at 0.5 MPa, making it suitable for heavy-duty pressing or clamping tasks.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for compatibility with CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides. It uses a PT tapered G3/4 port and omits the FB, CA, CB, and CR mounts, supporting only the Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 45 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 SAIJ200AX45-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×45 | 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 SAIJ200AX45-20S Is Used
Heavy-Duty Press Tuning
Dial in the exact 25-45mm travel window during press setup to accommodate different material thicknesses without machining new spacers.
Assembly Line Changeover
Quickly adjust the retract end-stop for new product variants on the fly, leveraging the 15708N force to seat large components precisely.
Variable End-Stop Clamping
Secure massive workpieces by fine-tuning the stroke position at commissioning, ensuring optimal clamping force across different fixture heights.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-20S the Right Cylinder?
Choose this 200mm bore adjustable cylinder when an application requires immense force—such as 15708N push at 0.5 MPa—and variable end-stops for product changeovers without swapping hardware. If your process needs less force, stepping down to a 160mm bore yields 10053N push at 0.5 MPa, which might better suit lighter dies. The rear adjuster acts solely as a travel stop to fine-tune the 25-45mm window; it does not hold the load without live air. For fail-safe load holding, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 200mm bore, 45mm stroke, 20mm adjustment, PT G3/4 port, and the -S magnet. Because the stroke is under 300mm, side-load risks are minimal, but the 40mm rod and M36x2 thread provide excellent rigidity. Operating speed spans 30-500 mm/s, ideal for controlled heavy movements.
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 SAIJ200AX45-20S FAQ
At 0.5 MPa operating pressure, this 200mm bore cylinder generates a push force of 15708N and a pull force of 15080N. It can reach a maximum push force of 28274N at 0.9 MPa.
The rear adjuster screw lets you shorten the nominal 45mm stroke by up to 20mm, creating a usable travel window of 25-45mm. This allows precise end-position tuning at commissioning without adding external stops, though the adjuster only acts as a stop and does not hold the load without air pressure.
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