Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-40S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-40S 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 SAIJ50BX225-40S
The AirTAC SAIJ50X225-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 982N of push force at 0.5 MPa and features a 225mm nominal stroke that can be fine-tuned down by up to 40mm, creating a precise 185-225mm usable travel window. This built-in adjustability allows you to dial in the retract end-position during commissioning without adding external stopper blocks.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and a position-sensing magnet. The magnet is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches, which seat neatly into the sensor grooves machined into both sides of the extruded aluminum barrel. The standard PT tapered port is G1/4.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-40S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-40S |
|---|---|
| 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 SAIJ50BX225-40S
| 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 SAIJ50BX225-40S Is Used
Product Changeover
Dial in the 185-225mm travel window on the fly when switching between product sizes on a packaging line, avoiding physical cylinder swaps.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to achieve exact mechanical positioning without machining custom external spacers.
Corrosive Assembly
Leverage the SUS304 stainless steel rod for pushing or clamping tasks in environments where moisture or mild chemicals are present.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-40S the Right Cylinder?
Select this 50mm bore cylinder when an application requires 982N of push thrust at 0.5 MPa but demands variable end-stops for product changeovers; if you need less force, the 40mm bore provides 628N, while the 63mm bore offers 1559N. The adjustable rear screw is a travel stop, not a locking mechanism, so it cannot hold a load without live air pressure. For positive load-holding, consider an external pilot-operated check valve or the related SAIL pneumatic lock cylinder. To match this ISO 15552 footprint exactly, specify the 50mm bore, 225mm stroke, 40mm adjustment, PT G1/4 port, and the -S magnet. Because the 225mm stroke is relatively long, ensure external guide rails are used to prevent excessive side-loading on the rod.
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 SAIJ50BX225-40S FAQ
At 0.5 MPa, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At a maximum 0.7 MPa operating pressure, the push force increases to 1374N.
The rear adjuster screw acts as a mechanical stop that shortens the 225mm nominal stroke by up to 40mm, giving a usable travel range of 185-225mm. It only sets the end position and does not lock the load without air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ50 Adjustable Cylinder SAIJ50BX225-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.