Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-75 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 SAIJ63X90-75
The AirTAC SAIJ63X90-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel down to a 15-90 mm window. Operating at 0.15-1.0 MPa, it delivers 1559 N of push thrust and 1402 N of pull thrust at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
This SKU uses a carbon steel piston rod with an M16x1.5 thread and a G3/8 PT port. The rear adjustment screw acts purely as a mechanical stop to fine-tune the retract end-position during commissioning; it does not lock the load without live air pressure. For drop-in replacements, it shares the exact ISO 15552 mounting interface and supports a reduced set of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-75 |
|---|---|
| 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 SAIJ63X90-75
| 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 SAIJ63X90-75 Is Used
Machine Changeover
Rapidly adjust the retract end-stop from 90 mm down to 15 mm when switching a packaging line to a different carton size, eliminating the need to physically swap cylinders.
Commissioning Calibration
Fine-tune the final resting position of tooling during initial setup, absorbing mechanical tolerances by dialing the rear screw rather than machining custom spacers.
Variable Forming Stops
Define precise bottoming positions for pressing or forming operations on the fly, relying on the 1402 N pull force to return the tooling safely.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-75 the Right Cylinder?
Choose this 63 mm bore when your application requires around 1559 N of push force at 0.5 MPa, sitting comfortably between the 982 N of a 50 mm cylinder and the 2513 N of an 80 mm unit. The massive 75 mm adjustment range on a 90 mm nominal stroke is ideal for prototyping or machinery that processes varying product sizes, allowing you to dial in the retract distance without swapping hardware or adding external stops.
If your process requires the piston to hold its position during a complete air pressure loss, note that this rear adjuster only sets the travel end and is not a brake. You would need to specify an SAIL pneumatic lock or an external rod lock instead. To match this exact unit for an ISO 15552 interchange, specify: 63 mm bore, 90 mm stroke, 75 mm adjustment, G3/8 PT port, carbon steel rod, no magnet, and a supported mount from the SAIJ subset.
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 SAIJ63X90-75 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. If you step up to an 80 mm bore, the push force increases to 2513 N at the same pressure.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 90 mm stroke by up to 75 mm, creating a usable travel window of 15 to 90 mm. It sets the end position but does not hold the load without live air pressure.
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