Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 210mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ63 mm
- Stroke210 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-50
The AirTAC SAIJ63X210-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 210 mm stroke that can be fine-tuned backward by up to 50 mm, yielding a usable travel window of 160 to 210 mm. Delivering a robust 2805 N of push force at 0.9 MPa, it is built for applications demanding exact end-position calibration.
This unit features a SUS420J2 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threads (G3/8) for a tight, reliable pneumatic seal. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. It supports AirTAC CMSE reed and DMSE electronic sensors, though this specific configuration does not include a magnet. The rear adjuster functions strictly as a travel stop to decelerate the piston, not as a load-holding lock.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 210 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×210 | 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-50 Is Used
Machine Changeovers
Dial in the 160-210 mm travel window during product size transitions without disassembling the pneumatic line.
End-Stop Calibration
Use the 50 mm rear screw to precisely set the retract position during initial commissioning of new machinery.
Variable Positioning
Ideal for assembly stations requiring adjustable retraction distances to accommodate varying material thicknesses.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-50 the Right Cylinder?
Choose this 63 mm bore when your application requires approximately 2805 N of thrust at 0.9 MPa. If your setup demands less force, stepping down to a 50 mm bore yields 1767 N, while upgrading to an 80 mm bore provides 4523 N. The 50 mm adjustment range is ideal for machine changeovers, allowing you to reposition the end-stop without physically swapping the cylinder or adding external stops.
Because the 210 mm stroke exceeds the 300 mm threshold requiring external guidance, ensure you use an external guide to handle side loads and prevent rod binding. For applications that must hold a load in place without continuous live air pressure, this rear adjuster will not act as a brake. In those cases, select an AirTAC SAIL or BSAI series cylinder instead. This SAIJ model is dimensionally interchangeable per ISO 15552 and supports a mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-50 FAQ
At an operating pressure of 0.9 MPa, this 63 mm bore cylinder generates 2805 N of push force and 2182 N at 0.7 MPa. The maximum force at 1.0 MPa is 318 kgf.
The rear adjuster acts as a mechanical stop, allowing you to shorten the 210 mm nominal stroke by up to 50 mm. This creates a usable travel window between 160 mm and 210 mm to fine-tune the end position.
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