Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10 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 SAIJ63AX125-10
The AirTAC SAIJ63X125-10 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 1559N push force at 0.5 MPa and uses a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance. The built-in rear stopper screw allows you to fine-tune the travel end position during commissioning, creating a usable 115 to 125 mm stroke window without adding external stops.
This 63mm bore actuator features a G3/8 port and dual-side sensor grooves compatible with CMSE reed and DMSE electronic switches. The rear adjuster functions strictly as a travel stop to set deceleration and end limits, not as a locking device. For applications requiring load-holding without continuous air pressure, an external rod lock or the AirTAC SAIL series is required.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10 |
|---|---|
| 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 SAIJ63AX125-10
| 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 SAIJ63AX125-10 Is Used
Changeover Calibration
Dial in the 10mm adjustment window to perfectly seat parts of slightly varying lengths on a packaging line without swapping out the entire actuator.
End-Stop Trimming
Trim the effective travel back from 125mm to 115mm to prevent mechanical crashing during initial machine commissioning.
Clamping Positioning
Utilize the 1559N thrust at 0.5 MPa to securely clamp workpieces while micro-adjusting the final clamp position via the rear screw.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-10 the Right Cylinder?
Choose this SAIJ63X125-10 model when your assembly requires precise end-position tuning during machine setup or product changeover. Stepping down to a 50mm bore reduces the push force to 982N at 0.5 MPa, while moving up to an 80mm bore yields 2513N. The 10mm adjustment range is ideal for dialing in small mechanical variances rather than compensating for large travel changes.
As a dimensionally interchangeable ISO 15552 cylinder, this model matches standard mounting footprints. It uses PT tapered port threads and supports the SAIJ mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the total stroke is 125mm, external side-load guides are not strictly necessary, but ensuring proper rod alignment maximizes seal life.
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 SAIJ63AX125-10 FAQ
At a 0.5 MPa operating pressure, this 63mm bore cylinder generates 1559N of push force and 1402N of pull force. At the maximum 1.0 MPa pressure, it provides up to 318 kgf of push force.
The rear stopper screw lets you shorten the nominal 125mm stroke by up to 10mm, creating an adjustable travel window of 115 to 125mm. It acts as a physical stop to tune the end position and does not hold the load without live air pressure.
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