Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 90mm 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
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50S
The AirTAC SAIJ63X90-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 90 mm travel by up to 50 mm. This creates a wide 40 to 90 mm usable travel window for fine-tuning the retract end position at commissioning without swapping the barrel or adding external stops. It features a carbon steel piston rod and a PT tapered port thread.
Delivering 1559 N of pull force at 0.5 MPa (or 2805 N push at 0.9 MPa), this bore size handles substantial loads. The integrated -S magnet works seamlessly with CMSE reed and DMSE electronic sensors mounted in the dual-side extruded barrel grooves. The rear adjuster acts purely as a mechanical stop for deceleration and positioning, meaning it will not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 90 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 SAIJ63X90-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×90 | 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 SAIJ63X90-50S Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 40-90 mm window during machine commissioning to accommodate new part dimensions without changing hardware.
Product Size Changeover
Rapidly adjust the stroke length on packaging lines when switching between different carton or container sizes on the same conveyor.
Assembly Positioning
Set precise end-of-stroke stops for pressing or clamping operations where the exact travel distance needs frequent micro-adjustments.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50S the Right Cylinder?
Select this 63 mm bore unit when a 50 mm bore yields insufficient thrust (982 N pull at 0.5 MPa) but an 80 mm bore is excessive (2268 N pull). The 50 mm adjustment range is ideal for machines processing variable product sizes, letting operators change the retract end-stop on the fly. For load-holding without continuous air pressure, this cylinder is insufficient; you should specify a SAIL air-released lock or BSAI clamp-lock instead. To match this ISO 15552 interchangeable cylinder, use a 63 mm bore, 90 mm stroke, 50 mm adjustment, PT port, and -S magnet.
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 SAIJ63X90-50S FAQ
At 0.5 MPa operating pressure, it provides 1559 N of pull force and 1402 N of push force. At the maximum 1.0 MPa pressure, the push force reaches 2805 N.
The rear adjuster screw lets you shorten the effective travel from 90 mm down to 40 mm. It functions as a mechanical stop to set the end position, but it does not lock the load without live air pressure.
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Standard models usually ship in 3-4 days.
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