This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X232S, 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 SI63X232S
The AirTAC Airtac SI63 Standard Cylinder SI63X232S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 232mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X232S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke232 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X232S
- 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 SI63X232S
The AirTAC SI63X232S is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 232mm stroke, delivering 1559N push force at 0.5MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI63X232S. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, output force and port size, dropping directly into existing fixtures.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked. Your SI63X232S includes a piston magnet for CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI63 Standard Cylinder SI63X232S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X232S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X232S |
| Bore size | Ø63 mm |
| Stroke | 232 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 SAI63X232S 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 SAI63X232S 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 SI63X232S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×232 | 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 SI63X232S Is Used
Mid-Tonnage Clamping
Secures heavy workpieces in CNC machining fixtures, utilizing the 1559N push force at 0.5MPa to hold parts rigidly against cutting forces.
Pallet Diversion
Actuates routing gates and stoppers on conveyor lines, where the 1402N pull force at 0.5MPa easily overcomes pallet inertia during redirection.
Replacing the Airtac SI63 Standard Cylinder SI63X232S with the SAI63X232S
To replace the SI63X232S, order the SAI63X232S and confirm the ISO 15552 mounting interface, 63mm bore, 232mm stroke, G3/8 port (PT/G/NPT thread) and your specific mounting accessory. Because this unit has the -S suffix, it contains a piston magnet for CS1-B/DS1-B switches; a no-S SKU cannot take a sensor. When sizing both ways, a neighbouring 50mm bore yields 982N push at 0.5MPa, while an 80mm bore yields 2513N. A plain cylinder drifts on air loss since the cushion only decelerates; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 232mm stroke, side-load and rod-bending risks are moderate, so guide the load to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X232S
- ✓ 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 SI63X232S FAQ
Yes, the SI63X232S is discontinued. The direct replacement is the AirTAC SAI63X232S. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 232mm stroke, G3/8 port, and mounting interface, so it fits existing fixtures perfectly.
The 63mm bore features a G3/8 port and M16x1.5 rod thread. At 0.5MPa it provides 1559N push and 1402N pull force. At 0.7MPa push is 2182N, and at 0.9MPa it is 2805N. The theoretical maximum force is 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X232S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X232S replacement — usually within 7-8 hours.