Airtac SAIJ50 Adjustable Cylinder SAIJ50BX190-20
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX190-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 190mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke190 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 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 SAIJ50 Adjustable Cylinder SAIJ50BX190-20
The AirTAC SAIJ50X190-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 982N of push force at 0.5 MPa. It features a SUS304 stainless steel rod and PT tapered ports. By turning the external rear screw, you can trim the nominal 190mm travel back by up to 20mm, creating a precise 170-190mm usable window for exact end-position tuning.
This adjustable stopper allows you to fine-tune the retract position during commissioning or product changeover without swapping out the cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface is dimensionally interchangeable per ISO 15552. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX190-20 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX190-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 190 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX190-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×190 | 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 SAIJ50 Adjustable Cylinder SAIJ50BX190-20 Is Used
End-Position Tuning
Dial in the exact retract distance within the 170-190mm window during machine commissioning without installing external physical stops.
Product Changeover
Quickly adapt the cylinder's travel end when switching to a different product size on a conveyor or processing line.
Assembly Calibration
Use the fine adjustment screw to set precise pressing or clamping depths, ensuring consistent assembly quality across cycles.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX190-20 the Right Cylinder?
Choose this 50mm bore when you need 982N of push force (825N pull) and a variable end-stop for machine setup flexibility. If your application requires less force, the 40mm bore offers 628N; if you need more, stepping up to the 63mm bore provides 1559N. The adjustable stroke is ideal for product-size changes on a line, but note that the rear adjuster acts only as a travel stop. It does not hold the load without live air—use an external rod lock or pilot-operated check valve for fail-safe load holding. The 16mm rod and M16x1.5 thread handle side loads well, but for any stroke of 300mm or more, an external guide is recommended to prevent rod binding.
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 SAIJ50 Adjustable Cylinder SAIJ50BX190-20 FAQ
At a 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The rear adjuster screw lets you shorten the 190mm nominal stroke by up to 20mm, providing a usable travel window of 170-190mm. The adjuster acts as a mechanical stop to set the end position and does not lock the load without air pressure.
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