Airtac SAIJ50 Adjustable Cylinder SAIJ50BX230-20
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX230-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 230mm 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
- Stroke230 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 SAIJ50BX230-20
The AirTAC SAIJ50X230-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to shorten the effective travel by up to 20 mm. This creates a usable stroke window of 210-230 mm, letting you dial in the exact retract end-position during commissioning without adding external stops. It delivers a robust 982 N of push force at 0.5 MPa, making it well-suited for moderate-load handling tasks.
Built with a SUS304 stainless steel rod (option B) and PT tapered ports, this unit provides excellent corrosion resistance and a tight pneumatic seal. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. The rear adjuster acts purely as a mechanical stop for end-position tuning; it does not lock or hold the load without continuous air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX230-20 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX230-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 230 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 SAIJ50BX230-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×230 | 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 SAIJ50BX230-20 Is Used
Changeover Tuning
Fine-tune the retract position within the 210-230 mm window during product size changeovers on a packaging line without swapping out the entire cylinder.
End-Stop Calibration
Dial in the exact end-of-stroke position during machine commissioning to prevent overshoot and ensure precise mechanical seating of components.
Corrosive Environments
Leverage the SUS304 stainless steel rod and double-acting power for reliable actuation in washdown or mildly corrosive industrial manufacturing settings.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX230-20 the Right Cylinder?
Choose this 50 mm bore when your application requires the 982 N push force at 0.5 MPa, which is a noticeable step up from the 40 mm bore's 628 N, yet more compact than the 63 mm bore's 1559 N. The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, whereas a fixed-stroke SAI cylinder is sufficient for static, repetitive cycles. Because the stroke is 230 mm, ensure an external guide is used if the load is heavy or subject to high side-load forces, as the 20 mm rod thread can only mitigate limited deflection.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 230 mm stroke, 20 mm adjustment range, PT port thread, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interface. Note that SAIJ omits the FB, CA, CB, and CR mountings. For applications requiring the cylinder to hold its position without live air, select the SAIL (air-released lock) or BSAI (clamp-lock) series instead, as the SAIJ adjuster is not a brake.
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 SAIJ50BX230-20 FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the nominal 230 mm stroke by up to 20 mm, resulting in a usable travel window of 210-230 mm. It only sets the end position and does not lock the load without live air pressure.
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