Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50 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 SAIJ200AX550-50
The AirTAC SAIJ200X550-50 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications, featuring a rear stroke adjuster that creates a 500 to 550 mm usable travel window. Built with an extruded aluminum barrel, it delivers a substantial 15708 N push force at 0.5 MPa, scaling up to 28274 N at 0.9 MPa. This model utilizes an SUS420J2 stainless steel piston rod and PT tapered port threads for robust fluid connectivity.
The integrated rear stopper mechanism allows operators to fine-tune the retract end-position during commissioning without swapping out the entire cylinder. It supports standard SAIJ mounting options including Basic, FA, LB, TC, FTC, TCM1, and TCM2. For position feedback, the barrel includes dual sensor grooves, though this specific SKU is configured without a magnet.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50 |
|---|---|
| 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 SAIJ200AX550-50
| 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 SAIJ200AX550-50 Is Used
Heavy Machinery Setup
Dial in the 500-550 mm retract position during large equipment commissioning to perfectly align heavy pressing or lifting mechanisms without external stops.
Product Size Changeover
Quickly adjust the stroke end-point by up to 50 mm on automated lines accommodating different large-scale product dimensions.
High-Force Positioning
Leverage the 15708 N push force at 0.5 MPa to move and position heavy industrial loads with precise end-stop control.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-50 the Right Cylinder?
Selecting this 200 mm bore cylinder is appropriate when your application requires the highest force tier in the SAIJ range, as stepping down to a 160 mm bore reduces the 0.5 MPa push force to 10053 N. The 50 mm adjustment range is ideal for production lines needing variable end-stops or product-size changeovers, providing setup flexibility that a fixed-stroke SAI cannot match. When specifying the ISO 15552 replacement match, confirm the 550 mm stroke, 50 mm adjustment, PT G3/4 port, and the chosen mounting style.
Because the nominal stroke is 550 mm, the 40 mm diameter rod and M36x2 thread will still experience leverage forces under load, so an external guide is recommended to prevent excessive side-loading. Remember that the rear adjuster functions strictly as a travel stop and does not hold the load without live air; for positive load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ200AX550-50 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides a push force of 15708 N and a pull force of 15080 N. At 0.7 MPa, the push force increases to 21991 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke from the nominal 550 mm down to 500 mm. This enables fine-tuning of the end position during setup, but it is not a lock and will not hold the load without continuous air pressure.
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