Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 550mm 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
- Stroke550 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50S
The AirTAC SAIJ200X550-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a massive 15708N push force at 0.5MPa and a 550mm nominal stroke that can be dialed back by up to 50mm, creating a precise 500-550mm usable travel window for heavy-duty positioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting.
This specific configuration includes a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and an integrated magnet (-S) for use with AirTAC CMSE reed and DMSE solid-state sensors. The rear adjuster acts purely as a mechanical stop to tune the end position during commissioning without adding external stops; it does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 550 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 SAIJ200AX550-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×550 | 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 SAIJ200AX550-50S Is Used
Heavy Stamping Press
Dial in the exact 500-550mm travel window during setup to accommodate different die heights without physically remounting the cylinder.
Large Product Diversion
Adjust the retract stopper on the fly to handle varying widths of heavy pallets or bulk materials on a packaging line.
Machine Commissioning
Fine-tune the end-of-stroke position to perfect timing sequences in large automated machinery before locking down the final settings.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50S the Right Cylinder?
Choose this 200mm bore cylinder when your application requires extreme thrust that smaller bores cannot provide, such as stepping up from a 160mm bore which offers 10053N push force at 0.5MPa. The 50mm adjustment range is ideal for equipment that undergoes frequent product-size changeovers, allowing operators to fine-tune the 500-550mm travel window on the fly instead of swapping out the entire cylinder.
Because the 550mm stroke is substantial, the 40mm rod diameter and M36x2 thread provide robust support, but an external guide is still recommended to prevent excessive side-loading on the long unsupported travel. For applications requiring true load-holding without continuous air pressure, this standard SAIJ is insufficient since the adjuster is only a stop—consider the SAIL or BSAI locking cylinder series instead. This model uses a PT tapered G3/4 port and supports ISO 15552 mounting interfaces including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ200AX550-50S FAQ
At an operating pressure of 0.5MPa, this 200mm bore cylinder provides a push force of 15708N and a pull force of 15080N. It can deliver up to 3204 kgf at the maximum rated pressure of 1.0MPa.
The rear external adjusting screw allows you to shorten the effective travel from the nominal 550mm down to 500mm. This creates a 500-550mm usable window for fine-tuning the retract end position at commissioning or during product changeovers, without needing to replace the cylinder.
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