Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20S 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 SAIJ200AX550-20S
The AirTAC SAIJ200X550-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window between 530 and 550 mm during commissioning. It delivers immense thrust, pushing 15708 N and pulling 15080 N at 0.5 MPa, making it suited for heavy-duty press operations. The extruded aluminum barrel incorporates sensor grooves on both sides for CMSE and DMSE switches.
This variant uses a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and features tapered PT port threads (G3/4). The robust 40 mm rod and M36x2 thread handle high mechanical stress, while the built-in variable air cushions at both ends absorb heavy impact forces. The rear stopper screw sets the retract end position without requiring external stops.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20S |
|---|---|
| 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 SAIJ200AX550-20S
| 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 SAIJ200AX550-20S Is Used
Heavy Press Tuning
Fine-tune the 530-550 mm travel window during setup to perfectly position large pressing tools without adding external mechanical stops.
Product Line Changeover
Quickly adjust the retract end-position by up to 20 mm when switching between different sized heavy products on the same conveyor line.
Large Assembly Calibration
Dial in the exact end-stop for massive assembly fixtures, leveraging the 15708 N push force to move substantial weights precisely.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-20S the Right Cylinder?
Select this 200 mm bore cylinder when an 160 mm bore (pushing 10053 N at 0.5 MPa) cannot generate enough force for your heavy load. The adjustable stroke is ideal for product changeovers on large equipment, allowing you to dial back the stroke by up to 20 mm without swapping the cylinder. Because the 550 mm stroke is substantial, you must use an external guide to prevent excessive side-loading on the rod.
For ISO 15552 interchangeability, match the 200 mm bore, 550 mm stroke, 20 mm adjustment, PT G3/4 ports, and the -S magnet. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, use an SAIL or BSAI cylinder. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ200AX550-20S FAQ
At a 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 3204 kgf.
A rear screw stopper lets you mechanically shorten the nominal 550 mm stroke by up to 20 mm, creating a 530 to 550 mm usable travel window. The adjuster sets the end position but does not lock the load without live air pressure.
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