Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 900mm 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
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-75S
The AirTAC SAIJ63X900-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the nominal 900 mm travel back by up to 75 mm, yielding a usable window of 825-900 mm. It delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it a robust choice for mid-range automation. The -S variant includes a magnet for position sensing.
Equipped with a PT tapered port (G3/8) and an M16x1.5 carbon steel rod, this unit uses a 36 mm air cushion at both ends to manage kinetic energy. The extruded aluminum barrel features sensor grooves on both sides, allowing you to directly mount CMSE reed or DMSE electronic solid-state switches for precise end-of-stroke detection.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 900 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 SAIJ63X900-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×900 | 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 SAIJ63X900-75S Is Used
Machine Commissioning
Dial in the exact retract distance within the 825-900 mm range during initial setup to align stops perfectly without machining new spacer blocks.
Product Changeover
Quickly adjust the end-stop position on a packaging line when transitioning to a different carton size, leveraging the 75 mm trim window.
Long-Stroke Ejection
Eject parts from a press over a long distance while retaining the ability to shorten the stroke by up to 75 mm if the ejection zone changes.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-75S the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore falls short on thrust (offering only 982 N push at 0.5 MPa), but a 80 mm bore provides excessive force (2513 N) and consumes more space. The 75 mm adjustment range is ideal for product changeovers, letting you fine-tune the retract end position during commissioning without swapping the cylinder or adding external mechanical stops.
Because the nominal stroke is 900 mm, the extended rod is highly susceptible to side loads; always guide the load externally to prevent binding. Note that the rear adjuster is a travel stop, not a lock—the cylinder cannot hold its position without live air. For fail-safe load holding, consider the SAIL or BSAI series. This SAIJ model uses the reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR.
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 SAIJ63X900-75S FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 318 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 900 mm down to as little as 825 mm. It decelerates the end position but does not lock the load without live air pressure.
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