Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20
The AirTAC SAIJ200X50-20 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty tasks, featuring a rear stroke adjuster that creates a 30-50 mm usable travel window from its 50 mm nominal stroke. Built with a robust 40 mm SUS420J2 stainless steel rod, it delivers massive thrust up to 15708 N at 0.5 MPa, making it perfect for high-impact pressing. PT tapered ports ensure a tight, leak-free pneumatic connection.
This adjustable-stroke design allows operators to fine-tune the retract end position during commissioning without swapping cylinders or adding external stops. The extruded aluminum barrel includes dual sensor grooves, though this non-magnet version requires adding a -S suffix to support CMSE reed or DMSE electronic switches. Remember that the rear adjuster acts only as a travel stop, not a load lock; for dead-air holding, use a SAIL or BSAI cylinder.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 50 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 SAIJ200AX50-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×50 | 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 SAIJ200AX50-20 Is Used
Heavy-Duty Pressing
Delivers up to 15708 N of push force at 0.5 MPa for forming and stamping operations, with a 30-50 mm stroke window to dial in the exact crush depth.
Product Changeovers
Quickly adjust the retract end-stop by up to 20 mm to accommodate varying workpiece sizes on the same line without changing out the cylinder.
Rigid Clamping Stations
Uses its 3204 kgf maximum thrust to secure heavy components during machining, relying on the SUS420J2 stainless rod for resilience against harsh environments.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20 the Right Cylinder?
Choose this 200 mm bore cylinder when an 80 mm bore (delivering 2513 N push at 0.5 MPa) cannot provide enough force, as the SAIJ200X50-20 outputs 15708 N at the same pressure. The 20 mm adjustment range is ideal for applications requiring precise end-position tuning during machine setup or product changeovers, replacing fixed-stroke SAI cylinders with a highly adaptable solution. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
When specifying an ISO 15552 replacement, match the 200 mm bore, 50 mm stroke, 20 mm adjustment, PT port thread, and SUS420J2 rod material. Although the 50 mm stroke is short, the massive 40 mm rod diameter handles significant side loads, but any application pushing beyond standard stroke limits should still use an external guide. For load-holding without live air pressure, integrate an external rod lock or pilot-operated check valve.
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 SAIJ200AX50-20 FAQ
At 0.5 MPa, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At its maximum operating pressure of 1.0 MPa, it can deliver up to 3204 kgf.
The rear adjuster acts as a mechanical stop that trims the effective travel, creating a 30-50 mm usable stroke window from the 50 mm nominal stroke. It allows for fine end-position tuning at commissioning but does not lock the load without continuous air pressure.
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