Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 125mm 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
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10S
The AirTAC SAIJ63X125-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 1559N of push force at 0.5MPa and features a 125mm nominal stroke that can be fine-tuned down by up to 10mm, creating a precise 115-125mm usable travel window. This built-in adjustability allows you to dial in the retract end position during commissioning without adding external stops.
This SKU includes a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and carries the -S magnet option for position sensing. The extruded aluminum barrel features sensor grooves on both sides, ready to accept AirTAC CMSE reed or DMSE electronic solid-state switches. It operates at speeds between 30-800mm/s and uses a G3/8 port.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 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 SAIJ63AX125-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×125 | 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 SAIJ63AX125-10S Is Used
Tooling Calibration
Dial in the exact retract distance within the 115-125mm window during machine setup to perfectly align grippers and forming tools.
Product Changeover
Quickly adjust the end-stop by up to 10mm to accommodate slight variations in part sizes on a production line without changing cylinders.
Assembly Positioning
Provides 1559N of push force at 0.5MPa for pressing or locating components, with fine-tuning to prevent overtravel damage.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10S the Right Cylinder?
Choose this 63mm bore when you need moderate thrust and on-the-fly end-position tuning; if your application requires less force, stepping down to a 50mm bore yields 982N at 0.5MPa, while moving up to an 80mm bore provides 2513N. The 10mm adjustment range is ideal for minor product changeovers or aligning tooling precisely without swapping the cylinder for a fixed-stroke SAI variant. Remember that the rear adjuster functions strictly as a travel stop, not a lock—the cylinder cannot hold a load without live air. For positive load-holding, consider an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 interchangeable unit, specify the 63mm bore, 125mm stroke, 10mm adjustment, PT tapered port threads, SUS420J2 rod, and the -S magnet. Mounting options include 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 SAIJ63AX125-10S FAQ
At 0.5MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. It can reach up to 2805N push force at 0.9MPa.
The rear adjuster acts as a mechanical stop that allows you to shorten the 125mm nominal stroke by up to 10mm, providing a usable travel window of 115-125mm. It only sets the end position and does not lock the load without continuous air pressure.
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Covers non-human-caused product damage.
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