Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20 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 SAIJ63AX210-20
The AirTAC SAIJ63X210-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 190-210 mm usable travel window, allowing you to dial back the nominal 210 mm stroke by up to 20 mm during commissioning. Delivering a push force of 2182 N at 0.7 MPa, it fits mid-range automation tasks perfectly.
This variant uses a SUS420J2 stainless steel rod for improved corrosion resistance and features PT tapered port threads with a G3/8 connection. The extruded aluminum barrel includes sensor grooves on both sides. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20 |
|---|---|
| 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 SAIJ63AX210-20
| 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 SAIJ63AX210-20 Is Used
End-Position Tuning
Fine-tune the retract distance within the 190-210 mm window during machine commissioning to achieve precise positioning without mechanical rework.
Product Changeover
Quickly adjust the stroke by up to 20 mm to accommodate different product sizes on a packaging line, minimizing downtime between runs.
Assembly Actuation
Provides 2182 N of push force at 0.7 MPa for driving mid-weight clamps and presses, with variable air cushions protecting the ends.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20 the Right Cylinder?
Select this 63 mm bore cylinder when you need 1559 N push force at 0.5 MPa, stepping up from a 50 mm bore (982 N) for higher thrust. Choose the SAIJ adjustable version over a fixed SAI when your machine setup requires variable end-stops or fine-tuning without adding external stops. The rear adjuster acts only as a travel stop, not a lock; for load-holding without live air, consider SAIL or BSAI. Because the stroke is 210 mm, ensure external guiding for side-load stability.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 63 mm bore, 210 mm stroke, 20 mm adjustment, PT G3/8 port, and standard mounting set. It lacks a magnet, so position sensing requires adding an -S suffix for CMSE or DMSE switches.
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 SAIJ63AX210-20 FAQ
At 0.5 MPa, it provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw lets you shorten the effective travel from the 210 mm nominal stroke down to 190 mm. This stopper only sets the end position and does not lock the load.
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