Airtac SAIJ200 Adjustable Cylinder SAIJ200X550-75
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X550-75 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke550 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200X550-75
The AirTAC SAIJ200X550-75 is a double-acting ISO 15552 profile cylinder featuring a robust 40mm carbon steel rod and a rear mechanical stopper. This adjuster creates a 475-550mm usable travel window, allowing you to dial back the nominal 550mm stroke by up to 75mm during commissioning. It delivers massive thrust, pushing 21991N at 0.7MPa, making it ideal for heavy-duty pressing. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches if needed later.
The rear adjuster functions strictly as a travel stop to fine-tune the end position, not as a lock, meaning live air pressure is always required to hold the load. For the 550mm stroke, the 40mm rod and M36x2 thread provide excellent rigidity, but an external guide is strongly recommended to manage side loads on this long, heavy assembly. The mounting interface covers Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X550-75 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X550-75 |
|---|---|
| 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200X550-75
| 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 SAIJ200X550-75 Is Used
Heavy Press Changeover
Adjusts the press depth by up to 75mm during product line changeovers, eliminating the need to swap out the entire cylinder for different material thicknesses.
Variable End-Stop Forming
Dials in the exact 475 to 550mm forming position during machine commissioning, ensuring precise metal bending without adding external mechanical stops.
Large Assembly Calibration
Fine-tunes the retraction end-point on heavy automotive assembly lines, allowing operators to compensate for tooling wear without recalibrating the entire PLC stroke logic.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X550-75 the Right Cylinder?
If your application needs less force, stepping down to a 160mm bore yields 10053N at 0.5MPa, whereas the 200mm is preferred for maximum stability. The adjustable stroke is selected over a fixed SAI cylinder when machine setups require frequent changeovers without physically swapping actuators or adding external stopper blocks.
For safety, never rely on the rear adjuster or the variable air cushions to hold a vertical load; they only decelerate the travel end. If the machine loses air, the load will drop. To maintain position without live pressure, integrate an external pilot-operated check valve or switch to an AirTAC SAIL or BSAI clamp-lock cylinder. This model uses PT tapered G3/4 ports and operates at 30-500mm/s.
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 SAIJ200X550-75 FAQ
The rear adjuster acts as a mechanical stopper that trims the effective travel back from the 550mm nominal stroke down to a minimum of 475mm. It sets the end position at commissioning but does not lock the load; live air pressure is still required to hold the cylinder in place.
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