This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X890S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI63 Standard Cylinder SI63X890S
The AirTAC Airtac SI63 Standard Cylinder SI63X890S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 890mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X890S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke890 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X890S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI63 Standard Cylinder SI63X890S
The AirTAC SI63X890S is a discontinued double-acting ISO 15552 profile cylinder with an 890 mm stroke and a 63 mm bore, delivering 1559 N push force at 0.5 MPa. It features a Ø20 mm rod, M16x1.5 thread, and a G3/8 air port. AirTAC replaced this legacy unit with the SAI63X890S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, and port size.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI accepts current AirTAC switches.
Airtac SI63 Standard Cylinder SI63X890S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X890S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X890S |
| Bore size | Ø63 mm |
| Stroke | 890 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, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI63X890S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / 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 | |
The SAI63X890S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI63 Standard Cylinder SI63X890S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×890 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI63 Standard Cylinder SI63X890S Is Used
Automated Press Ejection
Ejects formed parts using 1559 N of push force at 0.5 MPa, relying on adjustable end cushions to decelerate the 890 mm travel.
Replacing the Airtac SI63 Standard Cylinder SI63X890S with the SAI63X890S
To replace the SI63X890S, order the SAI63X890S. Confirm the ISO 15552 mounting interface, G3/8 port, and your mounting accessory (LB, FA, TC, etc.). The SAI family also adds SAIL (air-released lock), SAIF (built-in valve), and BSAI (clamp-lock) variants. A plain cylinder drifts on air loss; the cushion only decelerates, so use a pilot check valve or SAIL/BSAI lock for load holding. At 890 mm, prevent rod bending with an external guide to manage side loads. If sizing up or down, a 50 mm bore yields 982 N push, while an 80 mm bore yields 2513 N push at 0.5 MPa.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X890S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI63 Standard Cylinder SI63X890S FAQ
Yes, the SI63X890S is discontinued. The direct replacement is the SAI63X890S. It is dimensionally interchangeable per ISO 15552, keeping the same 63 mm bore, 890 mm stroke, G3/8 port, and mounting interface.
This 63 mm bore cylinder uses a G3/8 air port. It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a theoretical max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X890S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X890S replacement — usually within 7-8 hours.