Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX25-10
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX25-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 25mm 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
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX25-10
The AirTAC SAIJ63X25-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 15 to 25 mm usable travel window, allowing you to dial back the 25 mm nominal stroke by up to 10 mm during machine setup. This bore delivers 1559 N of push force at 0.5 MPa, making it suitable for medium-duty positioning tasks.
This variant features a SUS420J2 stainless steel rod for improved corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. The rear adjuster acts purely as a mechanical stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX25-10 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX25-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 25 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 SAIJ63AX25-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×25 | 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 SAIJ63AX25-10 Is Used
Machine Changeover
Quickly fine-tune the 15-25 mm travel window during product size changes without swapping the cylinder or adding external stopper blocks.
End-Position Tuning
Dial in the exact retract position on assembly fixtures where the 10 mm rear adjuster compensates for mechanical tolerance variations.
Short-Stroke Clamping
Apply 1559 N of clamping force at 0.5 MPa on workpieces, using the adjustable stop to prevent over-travel on delicate parts.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX25-10 the Right Cylinder?
Choose this 63 mm bore if you need 1559 N push force at 0.5 MPa and require precise end-stop tuning without adding external shims. If your application demands less force, stepping down to a 50 mm bore yields 982 N push force. Conversely, an 80 mm bore provides 2513 N if your load requires more thrust. The adjustable rear stopper is ideal for product changeovers where the exact extend position varies slightly.
Because this is a plain SAIJ cylinder, it will not hold its position or load without live air; for fail-safe load holding, consider the SAIL or BSAI series. When replacing an ISO 15552 cylinder, match the 63 mm bore, 25 mm stroke, 10 mm adjustment, G3/8 PT ports, and your required mounting accessories. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles.
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 SAIJ63AX25-10 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 318 kgf of push force.
The rear adjuster screw lets you mechanically shorten the 25 mm nominal stroke by up to 10 mm, creating a 15 to 25 mm usable travel window. The adjuster acts only as a travel stop and does not lock or hold the load without continuous air pressure.
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