Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-10
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 225mm 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
- Stroke225 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 SAIJ50BX225-10
The AirTAC SAIJ50X225-10 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 982N push force at 0.5 MPa and utilizes a SUS304 stainless steel rod for superior corrosion resistance. With a nominal 225mm stroke and a 10mm adjustment range, it provides a precise 215-225mm usable travel window for exact end-position tuning.
This model features PT tapered port threads (G1/4) and lacks a piston magnet, meaning it is not set up for CMSE or DMSE position sensing out of the box. The rear adjuster acts purely as a travel stop to dial in the retract position during commissioning; it does not lock the load without live air pressure. For applications requiring position holding without pneumatic pressure, an external pilot-operated check valve or a related SAIL lock cylinder is required.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-10 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 225 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 SAIJ50BX225-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×225 | 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 SAIJ50BX225-10 Is Used
End-Position Fine-Tuning
Dial in the exact retract distance within the 215-225mm window during machine commissioning without adding external mechanical stops.
Product Changeover
Quickly adjust the stroke by up to 10mm to accommodate slightly different product sizes on a packaging line.
Corrosive Assembly Tasks
Leverage the SUS304 stainless steel rod for light assembly duties in environments where moisture or mild chemicals are present.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-10 the Right Cylinder?
Choose this 50mm bore when you need more thrust than the 40mm variant (628N push at 0.5 MPa) but want a smaller footprint than the 63mm option (1559N). The adjustable 215-225mm window is perfect for machine setups requiring variable end-stops or product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. When replacing an ISO 15552 cylinder, match the 50mm bore, 225mm stroke, 10mm adjuster, PT port threads, and the non-magnet configuration.
Because the total stroke is 225mm, ensure adequate external guiding to prevent excessive side loading on the SUS304 rod. Remember that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. The integrated air cushions at both ends handle end-of-stroke deceleration, but only live air holds the load securely.
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 SAIJ50BX225-10 FAQ
At 0.5 MPa operating pressure, 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 acts as a mechanical stop, allowing you to shorten the effective travel from the 225mm nominal stroke down to 215mm. This creates a 215-225mm usable window for fine-tuning the end position without swapping the cylinder.
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