Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-20S 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 SAIJ63X90-20S
The AirTAC SAIJ63X90-20-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you dial back the 90 mm nominal travel to create a precise 70 to 90 mm usable window. 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 actuation. The extruded aluminum barrel features sensor grooves on both sides, and this -S variant includes a magnet for direct compatibility with AirTAC CMSE reed and DMSE electronic solid-state switches.
Equipped with a carbon steel piston rod and M16x1.5 rod threading, it handles operational side loads effectively while offering a standard 36 mm cushion at both ends. The rear adjuster acts purely as a travel stop for end-position tuning during commissioning; it is not a lock, so the cylinder cannot hold loads without live air pressure. It supports a speed range of 30-800 mm/s and uses PT tapered G3/8 ports.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-20S |
|---|---|
| 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 SAIJ63X90-20S
| 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 SAIJ63X90-20S Is Used
Machine Changeover
Dial in the 70-90 mm travel window during product-size changeovers to set new end positions without physically replacing the cylinder.
Component Seating
Fine-tune the rear stop to precisely seat components or apply clamping force without over-stroking the assembly.
Assembly Positioning
Use the adjustable end-stop to compensate for mechanical wear or tolerances, ensuring repeatable positioning on the line.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-20S the Right Cylinder?
Choose this 63 mm bore when you need more thrust than a 50 mm cylinder (which provides 982 N push at 0.5 MPa) but want a more compact footprint than an 80 mm option (2513 N push). The adjustable 70-90 mm travel window is ideal for machine setups requiring variable end stops or product-size changeovers without swapping out the entire cylinder. Because the rear screw is a stop and not a lock, any requirement for fail-safe load holding without live air will require an external rod lock or a different series like the AirTAC SAIL or BSAI. Mounting options include the reduced SAIJ set of Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ63X90-20S 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 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw trims the effective stroke up to 20 mm, giving you a usable travel window of 70 to 90 mm. It acts as a mechanical stop to fine-tune the end position and does not lock the load without air pressure.
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