Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-10S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-10S 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 SAIJ50BX425-10S
The AirTAC SAIJ50X425-10-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 415 to 425 mm, allowing you to dial back the nominal 425 mm stroke by up to 10 mm during machine setup. Operating at 0.5 MPa, it delivers 982 N of push force and 825 N of pull force.
This variant includes a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread. The extruded aluminum barrel features sensor grooves on both sides, and the integrated -S magnet is fully compatible with AirTAC CMSE reed and DMSE solid-state switches for precise position detection.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-10S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-10S |
|---|---|
| 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 SAIJ50BX425-10S
| 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 SAIJ50BX425-10S Is Used
Machine Changeover
Dial in the exact 415-425 mm retract end-stop during product size changes on a packaging line without replacing the cylinder.
End-Position Tuning
Fine-tune the stroke by up to 10 mm at commissioning to absorb mechanical tolerances and ensure precise tooling contact.
Conveyor Diverting
Adjust the retract distance on the fly to accommodate varying product widths on a sorting conveyor system.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX425-10S the Right Cylinder?
Choose this 50 mm bore when your application requires the 982 N push force at 0.5 MPa, stepping up from a 40 mm bore (628 N) for heavier loads or down from a 63 mm bore (1559 N) when space is constrained. The 10 mm adjustable end-stop is ideal for fine-tuning the retract position at commissioning without swapping cylinders or adding external stops. For mounting, SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces, omitting FB, CA, CB, and CR.
Because the 425 mm stroke is relatively long, the 20 mm rod diameter should be paired with an external guide to prevent excessive side-loading and premature seal wear. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true drop-prevention, consider an external pilot-operated check valve or the SAIL locking 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 SAIJ50BX425-10S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
The rear adjusting screw acts as a mechanical stopper that allows you to shorten the effective stroke by up to 10 mm, providing a usable travel window of 415 to 425 mm. It only sets the travel end and does not lock the load without live air pressure.
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Covers non-human-caused product damage.
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