Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-50S
The AirTAC SAIJ200X800-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 800 mm nominal travel by up to 50 mm for a precise 750-800 mm usable window. It delivers massive thrust, generating 15708 N of push force and 15080 N of pull force at 0.5 MPa, making it suitable for heavy-duty positioning tasks.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered port threads ensure a robust pneumatic seal at the G3/4 ports.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 800 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 SAIJ200AX800-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×800 | 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 SAIJ200AX800-50S Is Used
Heavy Machinery Positioning
Provides immense 15708 N push force for moving heavy structural components, using the 50 mm adjuster to perfectly dial in the final resting position.
Automated Line Changeover
Ideal for large-scale conveyor transitions where operators quickly reset the stroke window between 750 and 800 mm to accommodate different product sizes.
Press and Forming Stops
Acts as a robust, fine-tunable end-stop in heavy metal forming, ensuring precise bottoming depth without needing custom spacer blocks.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-50S the Right Cylinder?
Select this 200 mm bore cylinder when an application requires extreme force that smaller bores cannot provide; for context, stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N. The adjustable 750-800 mm window is perfect for equipment that requires variable end-stops during product changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder. To replace an ISO 15552 cylinder, match the 200 mm bore, 800 mm stroke, 50 mm adjustment, PT G3/4 ports, and -S magnet.
Because the stroke is 800 mm, the 40 mm diameter rod and M36x2 thread will experience significant leverage under side loading; an external guide mechanism is strongly recommended to prevent premature seal wear. Note that the rear adjuster functions strictly as a travel stop and does not lock the load—if position holding without live air pressure is required, consider an AirTAC SAIL or BSAI model.
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 SAIJ200AX800-50S FAQ
At an operating pressure of 0.5 MPa, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At the maximum rated pressure of 1.0 MPa, the push force reaches 3204 kgf.
The rear adjuster acts as an external stopper that allows you to shorten the effective travel from the nominal 800 mm down to 750 mm. This creates a 750-800 mm usable window for fine-tuning the end position at commissioning without changing the cylinder.
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