This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX110S, 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 SI63AX110S
The AirTAC Airtac SI63 Standard Cylinder SI63AX110S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 110mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX110S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke110 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX110S
- 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 SI63AX110S
The AirTAC SI63AX110S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 110 mm stroke. Featuring a SUS420J2 stainless steel rod and a built-in piston magnet for legacy CS1-B/DS1-B switches, it delivers 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63AX110S, which shares the exact ISO 15552 mounting interface, bore, stroke, output force, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. For applications needing load holding on air loss, the SAI family adds SAIL and BSAI lock variants the SI lacked.
Airtac SI63 Standard Cylinder SI63AX110S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX110S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX110S |
| Bore size | Ø63 mm |
| Stroke | 110 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 SAI63AX110S 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 SAI63AX110S 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 SI63AX110S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×110 | 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 SI63AX110S Is Used
Stainless Rod Clamping
Ideal for actuating clamping arms in washdown areas, utilizing the SUS420J2 stainless piston rod for corrosion resistance and 1559 N of thrust.
Replacing the Airtac SI63 Standard Cylinder SI63AX110S with the SAI63AX110S
To replace the SI63AX110S, order the SAI63AX110S. Verify the ISO 15552 mounting interface, the 63 mm bore, the 110 mm stroke, and the G3/8 port (available in PT, G, or NPT threads). Retain your existing mounting accessories and confirm the -S magnet requirement for current AirTAC switches. Sizing both ways: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. Note that a plain cylinder drifts on air loss as the cushion only decelerates; for load holding, specify an external pilot check valve or the SAIL/BSAI lock variants. The SUS420J2 stainless rod suits corrosive environments.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX110S
- ✓ 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 SI63AX110S FAQ
Yes, the SI63AX110S is discontinued. The direct replacement is the SAI63AX110S. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 110 mm stroke, G3/8 port, and mounting interface.
The 63 mm bore features a G3/8 air port and an M16x1.5 rod thread. It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N at 0.9 MPa, and a theoretical maximum force of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX110S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX110S replacement — usually within 7-8 hours.