Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-100
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 290mm 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
- Stroke290 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 SAIJ50BX290-100
The AirTAC SAIJ50X290-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a generous 100mm adjustment range, allowing you to dial the effective travel down from the 290mm nominal stroke to a 190mm minimum without swapping hardware. Delivering 982N of push force at 0.5MPa, it handles mid-range automation loads with precision.
This variant uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE electronic sensors. Remember the rear stopper only sets the end position; it does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-100 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 290 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 SAIJ50BX290-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×290 | 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 SAIJ50BX290-100 Is Used
Variable End-Stop Tuning
Dial in the exact 190-290mm travel window during commissioning to accommodate different material thicknesses without adding external mechanical stops.
Product Changeover Systems
Quickly adjust the retract position on packaging lines when switching to a new carton size, minimizing machine downtime.
Assembly Machine Setup
Fine-tune the end-of-stroke position on multi-stage assembly machines to perfectly seat components and compensate for mechanical drift.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-100 the Right Cylinder?
Select this 50mm bore cylinder when your setup requires variable end-stops for frequent product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your application needs less push force, stepping down to a 40mm bore yields 628N at 0.5MPa. For higher force demands, a 63mm bore provides 1559N.
Because the 290mm stroke is substantial, an external guide is recommended to prevent rod sag and manage side loads over extended travel. To match this ISO 15552 footprint, specify a 50mm bore, 290mm stroke, 100mm adjustment, PT ports, SUS304 rod, and Basic/LB/TC mountings. For load-holding without live air, consider an external rod lock or the SAIL series.
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 SAIJ50BX290-100 FAQ
At 0.5MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. The maximum thrust is 200kgf at 1.0MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 290mm down to 190mm. This stopper only sets the end position and does not lock the load without live air pressure.
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