This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX230S, 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 SI63AX230S
The AirTAC Airtac SI63 Standard Cylinder SI63AX230S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 230mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX230S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke230 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX230S
- 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 SI63AX230S
The AirTAC SI63AX230S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 230mm stroke. Delivering 1559 N push force at 0.5 MPa via a G3/8 port, this legacy unit is replaced by the SAI63AX230S. The SAI direct maintains identical ISO 15552 mounting, bore, and force, fitting existing fixtures perfectly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This specific SI63AX230S includes an SUS420J2 stainless rod (-A) and a magnet (-S) for CS1-B/DS1-B sensors. For load holding, note that cushions only decelerate; use SAIL or BSAI lock variants.
Airtac SI63 Standard Cylinder SI63AX230S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX230S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX230S |
| Bore size | Ø63 mm |
| Stroke | 230 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 SAI63AX230S 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 SAI63AX230S 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 SI63AX230S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×230 | 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 SI63AX230S Is Used
Clamping Fixtures
Holds workpieces securely during machining using the 1559 N push force at 0.5 MPa, with the SUS420J2 rod resisting coolant corrosion.
Package Diverters
Actuates routing gates on packaging lines where the 230mm stroke and 30-800 mm/s speed provide swift, reliable product sorting.
Replacing the Airtac SI63 Standard Cylinder SI63AX230S with the SAI63AX230S
To replace the SI63AX230S, order the SAI63AX230S. Confirm the ISO 15552 interface, 63mm bore, 230mm stroke, G3/8 port, and M16x1.5 thread. Retain the -A SUS420J2 rod and -S magnet (SAI uses current AirTAC switches). For sizing, neighboring bores offer 982 N (50mm) or 2513 N (80mm) at 0.5 MPa. At 230mm stroke, ensure guide alignment to prevent rod bending. A plain cylinder drifts on air loss; for held loads, use the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX230S
- ✓ 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 SI63AX230S FAQ
Yes, the SI63AX230S is discontinued. The direct replacement is the SAI63AX230S. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 230mm stroke, force, G3/8 port, and mounting interface.
The 63mm bore features 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 SAI63AX230S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX230S replacement — usually within 7-8 hours.