Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-50
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-50 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 SAIJ50AX190-50
The AirTAC SAIJ50X190-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position during commissioning. Rather than relying on external stops, the integrated mechanism provides a usable travel window of 140-190 mm, shortening the 190 mm nominal stroke by up to 50 mm. It delivers a robust 982 N push force at 0.5 MPa, making it suitable for moderate-duty positioning tasks.
This variant is configured with an SUS420J2 stainless steel piston rod (code A) for enhanced corrosion resistance and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. Note that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-50 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-50 |
|---|---|
| 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 SAIJ50AX190-50
| 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 SAIJ50AX190-50 Is Used
Machine Changeover
Dial in the 140-190 mm travel window during product size changes without physically swapping out the entire cylinder assembly.
End-Stop Tuning
Fine-tune the retract position during initial commissioning to perfect the resting state of your tooling at 0.5 MPa.
Assembly Line Positioning
Use the 982 N push force to move moderate loads into exact fixtures, relying on the rear screw for precise physical stops.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-50 the Right Cylinder?
Choose this 50 mm bore when your application requires the 982 N push force at 0.5 MPa (or 1374 N at 0.7 MPa), stepping up from the 40 mm bore which provides 628 N. The adjustable stroke is ideal for product changeovers on a line where the exact end-position needs slight variation without swapping the cylinder. Unlike a fixed-stroke SAI cylinder, this model lets you dial in the travel limit on the fly.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 190 mm stroke, 50 mm adjustment range, PT port threads, and the desired mounting style. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the rod is 20 mm with an M16x1.5 thread, it handles side loads well, but any stroke approaching 300 mm or beyond requires an external guide to prevent rod damage.
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 SAIJ50AX190-50 FAQ
The rear adjuster acts as an external stopper that lets you shorten the effective stroke by up to 50 mm. This gives you a usable travel window of 140-190 mm, allowing you to fine-tune the end position without adding external stops or changing the cylinder.
At 0.5 MPa operating pressure, the SAIJ50X190-50 provides 982 N of push force and 825 N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 1374 N.
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