Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-40
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-40 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 SAIJ50AX190-40
The AirTAC SAIJ50X190-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 190 mm travel back by up to 40 mm. This creates a highly versatile 150-190 mm usable window, letting you dial in the exact end position during commissioning without swapping hardware. Delivering 982 N of push force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance.
The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. It uses PT tapered G1/4 ports and relies on a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) that omits FB, CA, CB, and CR. The rear adjuster acts purely as a travel stop to set deceleration, not as a lock, so the cylinder will not hold a load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-40 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-40 |
|---|---|
| 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 SAIJ50AX190-40
| 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 SAIJ50AX190-40 Is Used
Machine Changeover
Quickly reset the retract stop within the 150-190 mm window when switching between product sizes on a shared fixture.
End-Position Tuning
Fine-tune the final deceleration point during commissioning without machining custom spacers or changing the cylinder.
Variable Assembly Stops
Adapt the stroke length on automated lines to accommodate slightly different component heights on the fly.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-40 the Right Cylinder?
Choose this 50 mm bore when an application requires 982 N of thrust at 0.5 MPa but demands on-the-fly end-position tuning. If you need less force, stepping down to a 40 mm bore yields 628 N; if your load is heavier, a 63 mm bore provides 1559 N. The adjustable 150-190 mm window is ideal for machine changeovers, replacing fixed-stroke SAI cylinders when external stops are impractical. Because the 190 mm stroke is below the 300 mm side-load threshold, the 16 mm rod handles standard loads well, though long unsupported assemblies still need external guiding. For applications requiring true load-holding without pneumatic pressure, consider the SAIL or BSAI series instead of relying on the adjuster.
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 SAIJ50AX190-40 FAQ
The rear adjuster screw acts as an external stopper, allowing you to shorten the 190 mm nominal stroke by up to 40 mm. This provides a usable travel window of 150 to 190 mm so you can set the exact end position during setup.
At an operating pressure of 0.5 MPa, the 50 mm bore provides 982 N of push force and 825 N of pull force. It can reach up to 1767 N of push force at 0.9 MPa.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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