Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX250-100S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX250-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX250-100S
The AirTAC SAIJ63X250-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 1559N push force at 0.5MPa. Its 250mm nominal stroke incorporates a 100mm adjustment range, yielding a usable travel window of 150-250mm for exact end-position tuning during commissioning. This model features a SUS420J2 stainless steel rod and a magnet for position sensing.
The rear stopper screw allows you to dial back the stroke without swapping the cylinder or adding external stops. It uses PT tapered port threads (G3/8) and supports AirTAC CMSE reed and DMSE electronic sensors via its dual-side barrel grooves. The adjuster acts purely as a travel stop, meaning live air pressure is required to hold the load.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX250-100S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX250-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 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 SAIJ63AX250-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×250 | 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 SAIJ63AX250-100S Is Used
Machine Changeover
Dial in the retract position up to 100mm during product size changes without replacing the cylinder or adding external mechanical stops.
Variable End-Stop Setup
Set the precise 150-250mm travel window at commissioning to perfectly time the end-of-stroke position for new tooling.
Adjustable Positioning
Fine-tune the final retract position on the fly to accommodate varying material thicknesses or process tolerances.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX250-100S the Right Cylinder?
Choose this 63mm bore when you need more thrust than the 50mm version (982N push at 0.5MPa) but less bulk than the 80mm class. The 100mm adjustment window is ideal for product-size changeovers on a single machine, letting you shift the retract end-stop by up to 100mm instantly. For exact ISO 15552 interchangeability, match the 63mm bore, 250mm stroke, 100mm adjustment, PT port thread, and -S magnet. Because the stroke is 250mm, ensure external guiding is used to prevent excessive side-loading on the rod. If you need fail-safe load holding without continuous air pressure, use an external rod lock or explore the SAIL or BSAI series instead.
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 SAIJ63AX250-100S FAQ
The SAIJ63X250-100-S has a nominal 250mm stroke with a rear adjuster that can trim up to 100mm, providing an effective travel window of 150-250mm. The rear screw acts as a physical stop to set the exact retract position.
At 0.5MPa operating pressure, this 63mm bore double-acting cylinder provides 1559N of push force and 1402N of pull force. It can reach a maximum push force of 2805N at 0.9MPa.
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