Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 425mm 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
- Stroke425 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 SAIJ50BX425-100S
The AirTAC SAIJ50X425-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 982N push force at 0.5 MPa and features a 425mm nominal stroke that can be fine-tuned down by up to 100mm, creating a precise 325-425mm usable travel window. This adjustability allows you to dial in the retract end-position at commissioning without swapping out the cylinder.
This specific SKU is built with a SUS304 stainless steel rod (code B) for superior corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. As an extruded aluminum profile cylinder, it integrates sensor grooves on both sides and utilizes PT tapered port threads (G1/4). It supports a standard mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 425 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 SAIJ50BX425-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×425 | 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 SAIJ50BX425-100S Is Used
Product Changeovers
Quickly adapt machinery for varying package sizes by dialing the retract stroke back anywhere within the 325-425mm window during line changeovers.
End-Position Tuning
Fine-tune the final retract position at machine commissioning to achieve exact alignment without fabricating custom external stopper blocks.
Diversion Gates
Drive variable-length diversion gates on material handling conveyors, relying on the 982N thrust class and precise stroke limits.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-100S the Right Cylinder?
Choose this 50mm bore when you need 982N of push force (825N pull) at 0.5 MPa, stepping up from a 40mm bore that provides 628N, or down from a 63mm bore yielding 1559N. The 100mm adjustment range is ideal for product-size changeovers on a line, letting you set a new variable end-stop without adding external stops. Because the nominal stroke is 425mm, an external guide is recommended to manage side-load on the extended rod.
For a direct ISO 15552 replacement match, ensure you specify the 50mm bore, 425mm stroke, 100mm adjustment, PT port thread, the desired mounting style, and the -S magnet. Note that the rear adjuster acts strictly as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ50BX425-100S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 100mm from the 425mm nominal length, providing a usable travel window of 325-425mm. It functions as a mechanical stop to set the end position and is not a locking device.
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