Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20 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 SAIJ200AX550-20
The AirTAC SAIJ200X550-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a massive 28274N of push force at 0.9 MPa and uses a PT tapered port thread. The integrated adjuster allows you to fine-tune the effective travel within a 530 to 550 mm window, eliminating the need for external stops during commissioning.
This specific configuration utilizes a SUS420J2 stainless steel rod for enhanced corrosion resistance. The extruded aluminum barrel includes dual-side sensor grooves for mounting CMSE reed or DMSE electronic switches, though this particular SKU omits the internal magnet. The rear adjuster functions strictly as a travel stop to set deceleration endpoints, not as a load-holding lock.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20 |
|---|---|
| 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 SAIJ200AX550-20
| 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 SAIJ200AX550-20 Is Used
Large Press Tonnage
Delivers up to 3204 kgf at 1.0 MPa for heavy pressing, while the 20 mm rear adjuster fine-tunes the bottom dead center position.
Heavy Material Diversion
Indexes large payloads along a transfer line, using the 530-550 mm travel window to adapt to varying product lengths on the fly.
Machine Changeover
Enables rapid setup adjustments for different fixture sizes without disassembling the mounting hardware or adding mechanical spacers.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20 the Right Cylinder?
Selecting this 200 mm bore cylinder is appropriate when your application demands extremely high thrust, such as 15708N of push force at a standard 0.5 MPa. If you need to step down to a smaller bore, the 160 mm variant yields 10053N at 0.5 MPa. The 20 mm adjustment range is ideal for product changeovers on large machinery, allowing you to dial in the exact end-position without physically swapping the cylinder. For load-holding without live air pressure, this standard SAIJ is insufficient; you must pivot to the BSAI clamp-lock or SAIL air-released lock series.
Because the 550 mm stroke exceeds 300 mm, the 40 mm diameter rod is susceptible to side-loading deflection. An external guide rail is strongly recommended to prevent premature seal wear. When matching this for an ISO 15552 replacement, verify the 550 mm stroke, 20 mm adjuster, PT porting, and your required mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ200AX550-20 FAQ
The rear adjusting screw acts as an external stopper, allowing you to shorten the effective travel from 550 mm down to 530 mm. It sets the end position but does not lock or hold the load without live air pressure.
At 0.5 MPa, it provides 15708N of push force and 15080N of pull force. At 0.9 MPa, the push force increases to 28274N.
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