Airtac SAIJ50 Adjustable Cylinder SAIJ50BX185-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX185-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 185mm 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
- Stroke185 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 SAIJ50BX185-30S
The AirTAC SAIJ50X185-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 982N of push force at 0.5 MPa. Its integrated 30mm adjustment screw creates a 155-185mm usable travel window, allowing precise end-position tuning during commissioning without swapping hardware. The SUS304 stainless steel rod provides excellent corrosion resistance for demanding environments.
This model includes a magnet for position sensing and is dimensionally interchangeable per ISO 15552. The rear stopper acts purely as a travel limit and does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX185-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX185-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 185 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 SAIJ50BX185-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×185 | 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 SAIJ50BX185-30S Is Used
Product Changeovers
Dial in the 155-185mm travel window on the fly to accommodate different package sizes on a packaging line without changing cylinders.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to achieve exact seating pressure without adding external mechanical stops.
Corrosive Environments
Leverage the SUS304 stainless steel rod for reliable actuation in washdown or mildly corrosive industrial manufacturing settings.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX185-30S the Right Cylinder?
Choose this adjustable-stroke cylinder when your application requires variable end-stops or frequent product changeovers, unlike a fixed-stroke SAI model. If your setup needs less force, the 40mm bore provides 628N at 0.5 MPa; if more thrust is required, stepping up to the 63mm bore yields 1559N. Because the stroke is 185mm, ensure adequate external guiding to handle side loads.
To match this ISO 15552 replacement exactly, specify a 50mm bore, 185mm nominal stroke, 30mm adjustment, PT tapered ports, SUS304 (B) rod material, and the -S magnet option. It supports a 30-800 mm/s speed range and uses the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting set.
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 SAIJ50BX185-30S FAQ
At 0.5 MPa, 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 allows you to shorten the 185mm nominal stroke by up to 30mm, creating a 155-185mm usable travel window. It functions as a physical stop and does not lock the load without air pressure.
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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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Most inquiries answered within 7-8 hours.
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