Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-20S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-20S 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 SAIJ50AX225-20S
The AirTAC SAIJ50X225-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, enabling a usable travel window of 205 to 225 mm. Equipped with a SUS420J2 stainless steel rod and a -S magnet, it integrates seamlessly with CMSE reed and DMSE electronic sensors via the dual-sided extruded aluminum barrel grooves. Delivering 982N of push force at 0.5MPa, it suits moderate-duty positioning tasks.
This model utilizes PT tapered port threads (G1/4) and includes adjustable air cushions at both ends to decelerate the load. The rear adjuster functions strictly as a mechanical stop for end-position tuning, not a lock, meaning live air pressure is required to hold the load. For true fail-safe holding, consider the SAIL or BSAI series.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-20S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-20S |
|---|---|
| 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 SAIJ50AX225-20S
| 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 SAIJ50AX225-20S Is Used
Machine Changeover
Dial in the 205-225mm retract position on the fly when switching product sizes on a packaging line.
End-Stop Tuning
Fine-tune the final end position during commissioning without machining new mounting plates.
Assembly Pressing
Apply 982N of push force at 0.5MPa for precise pressing operations with built-in air cushioning.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-20S the Right Cylinder?
Choose this 50mm bore when you need more force than the 40mm variant (628N push at 0.5MPa) but want a smaller footprint than the 63mm option (1559N push). The 20mm adjustment range is ideal for fine-tuning the retract end during machine commissioning or product changeover, eliminating the need to swap cylinders or add external stops. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Since the 225mm stroke exceeds 300mm? No, but for any long stroke, an external guide is recommended to manage side loads on the M16x1.5 rod thread. To replace an ISO 15552 cylinder, match the 50mm bore, 225mm stroke, 20mm adjust, PT G1/4 port, and -S magnet.
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 SAIJ50AX225-20S FAQ
It delivers 982N of push force and 825N of pull force at 0.5MPa, scaling up to 1767N push at 0.9MPa.
The rear adjuster acts as a mechanical stop to trim the effective stroke, providing a usable travel window of 205 to 225mm. It is not a lock, so live air is required to hold position.
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 SAIJ50AX225-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.